ALBERT

Description / Table of Contents: During February and March 1980 the physical properties of Weddell Sea pack ice were investigated via core drilling of 66 floes located along the transect of 600 nautical miles from 64°S to 74°S latitude at roughly 40°W longitude. These studies revealed widespread frazil ice in amounts not known to exist in Arctic sea ice of comparable age and thickness. It is estimated from structure studies of 62 of the 66 floes that 54% of the total ice production of the Weddell Sea is generated as frazil. The disposition and exceptional thickness of the frazil show that mechanisms other than surface turbulence effects are involved and imply that the circulation and structure of the water in the upper levels of the Weddell Sea are significantly different from those in the Arctic basin. Salinities of both first-year and multi-year floes are notably higher than those of their Arctic counterparts because summer surface melting is rare or absent in the Weddell Sea; in the Arctic, downward percolating meltwater flushes through the ice and lowers its salinity. Fluorescence was evaluated as a means of revealing biological activity in Weddell Sea pack ice. It proved useful as an index of combined living and dead material in the ice, but measurements failed to establish any consistent relationship between fluorescence and salinity as suggested be earlier work in the Weddell Sea.

Description / Table of Contents: Constant strain-rate tension tests were conducted on remolded saturated frozen Fairbanks silt at various temperatures, strain rates, and densities. It was found that the critical strain rate of the ductile-brittle transition is not temperature-dependent at temperatures down to -5°C, but varies with density. The peak tensile strength decreases considerable with decreasing strain rate for ductile failure, but it decreases slightly with increasing strain rate for brittle fracture. The failure strain remains almost constant at temperatures lower than about -2°C, but it varies with density and strain rate at -5°C. The initial tangent modulus is independent of strain rate and increases with decreasing temperature and density.

Description / Table of Contents: The ability to map frazil ice deposits and water channels beneath an ice-covered river in central Alaska using the magnetic induction conductivity (MI) technique has been assessed. The study was performed during the first week of March of 1986 on the Tanana River near Fairbanks and employed a commercially available instrument operating at a fixed frequency with a fixed antenna (coil) spacing and orientation. Comparisons of the MI data with theoretical models based upon physical data measured along three cross sections of the river demonstrate the sensitivity of the MI technique to frazil ice deposits. The conductivity generally derived for the frazil ice deposits encountered is very low (approx. .00063 s/m) when compared with the measured value for water (approx. 0.011 S/m), and is similar to the calculated values for gravel and sandy gravel bed sediments. In all three cross sections, maxima in the apparent conductivity profiles correlated with frazil ice deposits. Difficulties, possibly due to adverse effects of cold weather upon instrument calibration, affected the quantitative performance of the instrument on one cross section, although the interpretation of the data (locations of open channels vs frazil deposits) was qualitatively unaffected.

Description / Table of Contents: In this report we present results of measurements of the crystalline structure and salinity characteristics of sea ice in Hebron Fiord and vicinity, Labrador. Structurally, the fiord ice was entirely first year and composed predominantly of congelation, columnar-type crystals. At most of the sampling sites the ice exhibited moderately to strongly aligned c-axes consistent with the inferred direction of near surface currents in the fiord. Generally diminished values of bulk salinity at five separate locations reflect the warm ice conditions encountered at the time of sampling (late May) and the effect of meltwater flushing in promoting loss of brine, vertically, from the ice sheet. Observations outside Hebron Fiord indicated the presence of only minor amounts of multiyear ice during the latter part of May.

Description / Table of Contents: This report describes the structural analysis of multi-year sea ice samples that were tested in the first phase of a program designed to obtain a comprehensive understanding of the mechanical properties of multi-year sea ice from the Alaskan Beaufort Sea. Each test specimen is classified into one of three major ice texture categories: granular, columnar, or a mixture of columnar and granular ice. The crystallographic orientation, percent columnar ice, and grain size are then evaluated for the granular and/or columnar ice in the sample. Test results are interpreted with respect to these parameters. The overall composition of multi-year ridges is also considered, based on the extensive field sampling that was done in the program

Description / Table of Contents: Two-phase dielectric mixing model results are presented showing the electromagnetic properties of sea ice versus depth. The modeled data are compared with field measurements and show comparable results. It is also shown how the model data can be used in support of impulse radar and airborne electromagnetic(AEM) remote sensing of sea ice. Examples of the remote measurement of sea ice thickness using impulse radar operating in the 80- to 300-MHz frequency band and low-frequency (500 to 30,000 Hz) sounding techniques are presented and discussed. Keywords: Polar regions; Radar pulses.

Description / Table of Contents: Thermodynamic properties of electrolyte solutions change rapidly below 25C, but these properties are seldom measured over the low temperature range (below 0C), even though some salt solutions can remain unfrozen to -50C. The heat capacities of concentrated solutions (0.5-0.6 molal) of NaC-H2O were measured from 25C to -40C as part of a study to provide thermodynamic data of salt solutions for use in cold regions chemical and geophysical studies. A differential scanning calorimeter was used to measure specific heat capacity from cooling scans as a function of temperature and concentration. The heat capacity data were fit to the equations of Pitzer and coworkers to obtain activity and osmotic coefficients of NaC and H2O, respectively, below o C. Supercooling of the solutions was encouraged by using a fast scan rate (10d2/minute) so that specific heat could be measured to lower temperatures than would be possible if the solutions were allowed to equilibrate with the solid phases. The solubility of ice was calculated and compared to the experiment freezing point of NaC solutions.

Description / Table of Contents: Uniaxial constant-stress and constant-strain-rate compression tests were conducted on more than 200 remolded, saturated, frozen specimens of Fairbanks silt under various conditions. A series of curves of stress vs strain rate for various temperatures of strain rates ranging from about 6x10-2 to 10-8s-1show a close strength correspondence between the constant-stress and-costant strain-rate tests. All of these "complete" stress vs strain rate curves could not be described by a single power law or exponential equation, indicating that different deformation mechanisms are dominant within different ranges of strainrate Two critical strain rates for distinguishing between the different deformation mechanisms were ob-served to be near 10- 3 and 10-6 s-1 for the medium-dense frozen Fairbanks silt. The former indicates the transition from ductile failure to moderate brittle fracture as strain rate increases, while the latter indicates the transition from dislocation creep to glide creep (by the authors' definition). Based on the change in flow law, two fundamental creeps were classified: short-term creep, which is governed by glide creep, and long-term creep, which is governed by dislocation creep. The failure criterion of frozen silt has a general form of em x tm = Ef, where m depends only on density, and tm is in minutes if m is not 1. The failure strain Ef was not sensitive to temperature and strain rate over a certain range of strain rates, but it was very sensitive to density. Assur's creep model (1980) for ice was used to fit the creep data in this study. It works well for short-term creep but does not fit as well for long-term creep. The rate process theory was applied to the creep data. A very high value of experimental activation energy was obtained for lower stresses, and a very high value of apparent activation energy was observed for higher temperatures. The peak compressive strength was very sensitive to temperature and strain rate but relatively insensitive to density. While the initial tangent modulus is not-sensitive to strain rate, it increases with decreasing temperature and density.

Description / Table of Contents: The approximate heat balance integral method (HBIM) is extended to the case of a medium with variable properties such as snow. The case of linear variation of thermal conductivity was investigated. An alternative heat balance integral method (AHBIM) was developed. Both constant surface temperature and surface heat flux were considered. A comparison was made of the temperature distribution from the HBIM, AHBIM and an analytical method for the case of constant surface temperature. In general, results agree quite well with the analytical method for small values of dimensionless time τ, but the difference becomes more pronounced as τ increases. It was found that the AHBIM with a quadratic temperature profile gave a somewhat better result, especially when the value of the dimensionless distance η is small. For a specific property function of E(η) = eη, closed form solutions were obtained. The results, when compared with those from HBIM, AHBIM and the analytical method were found to agree exceptionally well with the analytical method, especially for large values of τ.

Description / Table of Contents: The structure and salinity characteristics of saline ice slabs removed from ice sheets grown in an outdoor pool have been studied and related to the complex relative dielectric permittivity measured with free-space transmission techniques at 4.80 and 9.50 GHz. The saline ice closely simulated arctic sea ice in its structural and salinity characteristics, which were regularly monitored in a number of ice sheets grown during the winters of 1983-84 and 1984-85. In-situ transmission measurements at similar frequencies were also made on the ice sheets themselves using antennas located above and beneath the ice. The slab measurements were made during warming from -29° to -2°C on slabs grown during the winter of 1983-84 (4.75 GHz) and during a warming and cooling cycle over a slightly larger temperature range on slabs grown during the winter of 1984-85 (4.80 and 9.50 GHz).

Description / Table of Contents: The author measured time series of longitudinal (u) and vertical (w) velocity and temperature (t) and humidity (q) fluctuations with fast-responding sensors in the near-neutrally stable surface layer over a snow-covered field. These series yielded individual spectra and u-w, w-t, w-q and t-q cospectra, phase spectra and coherence spectra for nondimensional frequencies (fz/U) from roughly 0.001 to 10. With the exception of the u-w cospectra, all the spectra and cospectra displayed the expected dependence on frequency in an inertial or inertial-convective subrange. All, however, contained significantly more energy at low frequency than the Kansas neutral-stability spectra and cospectra. This excess low-frequency energy and the erratic behavior of the u-w cospectra imply that forested hills bordering the site on two sides were producing disturbances in the flow field at scales roughly equal to the height of the hills, 100 m. The phase and coherence spectra suggest that internal gravity waves were also frequently present, since the atmospheric boundary layer generally had slightly stable stratification. Consequently, at this complex site, turbulence alone determines the spectra and cospectra at high frequency; at low frequency the spectra and cospectra reflect a combination of topographically generated turbulence and internal waves. From the measured temperature and humidity spectra and the t-q cospectra, the author computed refractive index spectra for light of 0.55-micrometer and millimeter wavelengths. The refractive index spectra had shapes like the other scalar spectra: excess energy at low frequency and an inertial-convective subrange at high frequency.

Description / Table of Contents: This review discusses problems associated with the anomalous temperature-density relations of water. It covers a) onset of convection, b) temperature structure and natural convective heat transfer, and c) laminar forced convective heat transfer in the water/ice system. The onset of convection in a water/ice system was found to dependent on thermal boundary conditions, not a constant value as in the classical fluids that have a monotonic temperature-density relationship. The water/ice system also exhibits a unique temperature distribution in the melt layer immediately after the critical Rayleigh number is exceeded and soon after it establishes a more or less constant temperature region progressively deepening as the melt layer grows. The constant temperature is approximately 3.2°C for water layers formed from above but varies for melt layers from below. The heat flux across the water/ice interface was found to be a weak power function and to increase linearly with temperature for melted layers from above and below, respectively.

Description / Table of Contents: This is the third in a series of four reports on the laboratory and field testing of a number of road and airfield subgrades, covering the laboratory repeated-load triaxial testing of five soils in the frozen and thawed states and analysis of the resulting resilient modulus measurements. The laboratory testing procedures allow simulation of the gradual increase in stiffnessfound in frost-susceptible soils after thawing. The resilient modulus is expressed in a nonlinear model in terms of the applied stresses, the soil moisture tension level (for unfrozen soil), the unfrozen water content (for frozen soil) and the dry density. The resilient modulus is about 10 GPa for the frozen material at temperatures in the range of -5° to -8° C. The decrease in modulus with increasing temperature was well-modeled in terms of the unfrozen water content. Upon thaw, the modulus dropped to about 100 MPa and generally increased with increasing confining stress and decreased with increasing principal stress ratio. The modulus also increased with the soil moisture tension level. The resilient Poisson's ratio did not appear to be a systematic function of any of the test variables.

Description / Table of Contents: Introduction --- K. W. Glennie: Desert sediments: ancient and modern / Geological Society, London, Special Publications, 35:1-4, doi:10.1144/GSL.SP.1987.035.01.01: Fluvial Sediments: Process and Form --- A. P. Schick, J. Lekach, and M. A. Hassan: Vertical exchange of coarse bedload in desert streams / Geological Society, London, Special Publications, 35:7-16, doi:10.1144/GSL.SP.1987.035.01.02 --- S. Grossman and R. Gerson: Fluviatile deposits and morphology of alluvial surfaces as indicators of Quaternary environmental changes in the southern Negev, Israel / Geological Society, London, Special Publications, 35:17-29, doi:10.1144/GSL.SP.1987.035.01.03 --- J. K. Maizels: Plio-Pleistocene raised channel systems of the western Sharqiya (Wahiba), Oman / Geological Society, London, Special Publications, 35:31-50, doi:10.1144/GSL.SP.1987.035.01.04 --- Tectonism, Climatic Change and Fluviatile Desert Sediments --- L. E. Frostick and I. Reid: Tectonic control of desert sediments in rift basins ancient and modern / Geological Society, London, Special Publications, 35:53-68, doi:10.1144/GSL.SP.1987.035.01.05 --- H. Olsen: Ancient ephemeral stream deposits: a local terminal fan model from the Bunter Sandstone Formation (L. Triassic) in the Tønder-3, -4 and -5 wells, Denmark / Geological Society, London, Special Publications, 35:69-86, doi:10.1144/GSL.SP.1987.035.01.06 --- A. M. Harvey: Alluvial fan dissection: relationships between morphology and sedimentation / Geological Society, London, Special Publications, 35:87-103, doi:10.1144/GSL.SP.1987.035.01.07 --- M. A. J. Williams, P. I. Abell, and B. W. Sparks: Quaternary landforms, sediments, depositional environments and gastropod isotope ratios at Adrar Bous, Tenere Desert of Niger, south-central Sahara / Geological Society, London, Special Publications, 35:105-125, doi:10.1144/GSL.SP.1987.035.01.08 --- Aeolian Sediments: Dust Dynamics and Deposits --- W. B. Whalley, B. J. Smith, J. J. McAlister, and A. J. Edwards: Aeolian abrasion of quartz particles and the production of silt-size fragments: preliminary results / Geological Society, London, Special Publications, 35:129-138, doi:10.1144/GSL.SP.1987.035.01.09 --- K. Pye and H. Tsoar: The mechanics and geological implications of dust transport and deposition in deserts with particular reference to loess formation and dune sand diagenesis in the northern Negev, Israel / Geological Society, London, Special Publications, 35:139-156, doi:10.1144/GSL.SP.1987.035.01.10 --- R. Gerson and R. Amit: Rates and modes of dust accretion and deposition in an arid region—the Negev, Israel / Geological Society, London, Special Publications, 35:157-169, doi:10.1144/GSL.SP.1987.035.01.11 --- H. Vine: Wind-blown materials and W African soils: an explanation of the ‘ferrallitic soil over loose sandy sediments’ profile / Geological Society, London, Special Publications, 35:171-183, doi:10.1144/GSL.SP.1987.035.01.12 --- Dune Dynamics and Deposits --- A. Gunatilaka and S. Mwango: Continental sabkha pans and associated nebkhas in southern Kuwait, Arabian Gulf / Geological Society, London, Special Publications, 35:187-203, doi:10.1144/GSL.SP.1987.035.01.13 --- A. Warren and S. Kay: Dune networks / Geological Society, London, Special Publications, 35:205-212, doi:10.1144/GSL.SP.1987.035.01.14 --- L. B. Clemmensen: Complex star dunes and associated aeolian bedforms, Hopeman Sandstone (Permo-Triassic), Moray Firth Basin, Scotland / Geological Society, London, Special Publications, 35:213-231, doi:10.1144/GSL.SP.1987.035.01.15 --- B. P. J. Williams, E. K. Wild, and R. J. Suttill: Late Palaeozoic cold-climate aeolianites, southern Cooper Basin, South Australia / Geological Society, London, Special Publications, 35:233-249, doi:10.1144/GSL.SP.1987.035.01.16 --- R. A. Carruthers: Aeolian sedimentation from the Galtymore Formation (Devonian), Ireland / Geological Society, London, Special Publications, 35:251-268, doi:10.1144/GSL.SP.1987.035.01.17 --- Grain Size, Process and Dune Environment --- E. C. Flenley, N. R. J. Fieller, and D. D. Gilbertson: The statistical analysis of ‘mixed’ grain size distributions from aeolian sands in the Libyan Pre-Desert using log skew Laplace models / Geological Society, London, Special Publications, 35:271-280, doi:10.1144/GSL.SP.1987.035.01.18 --- I. Livingstone: Grain-size variation on a ‘complex’ linear dune in the Namib Desert / Geological Society, London, Special Publications, 35:281-291, doi:10.1144/GSL.SP.1987.035.01.19 --- D. S. G. Thomas: Discrimination of depositional environments using sedimentary characteristics in the Mega Kalahari, central southern Africa / Geological Society, London, Special Publications, 35:293-306, doi:10.1144/GSL.SP.1987.035.01.20 --- Chemical Sediments --- D. A. Hendry: Silica and calcium carbonate replacement of plant roots in tropical dune sands, SE India / Geological Society, London, Special Publications, 35:309-319, doi:10.1144/GSL.SP.1987.035.01.21 --- C. R. Roberts and C. W. Mitchell: Spring mounds in southern Tunisia / Geological Society, London, Special Publications, 35:321-334, doi:10.1144/GSL.SP.1987.035.01.22 --- Remote Sensing of Desert Sediments --- C. S. Breed, J. F. McCauley, and P. A. Davis: Sand sheets of the eastern Sahara and ripple blankets on Mars / Geological Society, London, Special Publications, 35:337-359, doi:10.1144/GSL.SP.1987.035.01.23 --- M. M. Ashour: Surficial deposits of Qatar Peninsula / Geological Society, London, Special Publications, 35:361-367, doi:10.1144/GSL.SP.1987.035.01.24 --- A. C. Millington, A. R. Jones, N. Quarmby, and J. R. G. Townshend: Remote sensing of sediment transfer processes in playa basins / Geological Society, London, Special Publications, 35:369-381, doi:10.1144/GSL.SP.1987.035.01.25

Description / Table of Contents: General Topics and Reviews --- S. R. Taylor: Geochemical and Petrological Significance of the Archaean-Proterozoic Boundary / Geological Society, London, Special Publications, 33:3-8, doi:10.1144/GSL.SP.1987.033.01.01 --- R. P. Hall, D. J. Hughes, C. R. L. Friend, and G. L. Snyder: Proterozoic Mantle Heterogeneity: Geochemical Evidence from Contrasting Basic Dykes / Geological Society, London, Special Publications, 33:9-21, doi:10.1144/GSL.SP.1987.033.01.02 --- D. Rickard: Proterozoic Volcanogenic Mineralization Styles / Geological Society, London, Special Publications, 33:23-35, doi:10.1144/GSL.SP.1987.033.01.03 --- Early Proterozoic Volcanic Suites of the Baltic Shield --- T. C. Pharaoh, A. Warren, and N. J. Walsh: Early Proterozoic Metavolcanic Suites of the Northernmost Part of the Baltic Shield / Geological Society, London, Special Publications, 33:41-58, doi:10.1144/GSL.SP.1987.033.01.04 --- M. Honkamo: Geochemistry and Tectonic Setting of Early Proterozoic Volcanic Rocks in Northern Ostrobothnia, Finland / Geological Society, London, Special Publications, 33:59-68, doi:10.1144/GSL.SP.1987.033.01.05 --- Waldo Vivallo and Lars-Åke Claesson: Intra-Arc Rifting and Massive Sulphide Mineralization in an Early Proterozoic Volcanic Arc, Skellefte District, Northern Sweden / Geological Society, London, Special Publications, 33:69-79, doi:10.1144/GSL.SP.1987.033.01.06 --- Joanna Parr and David Rickard: Early Proterozoic Subaerial Volcanism and Its Relationship to Broken Hill-type Mineralization in Central Sweden / Geological Society, London, Special Publications, 33:81-93, doi:10.1144/GSL.SP.1987.033.01.07 --- H. Colley and L. Westra: The Volcano-Tectonic Setting and Mineralization of the Early Proterozoic Kemiö-Orijärvi-Lohja Belt, SW Finland / Geological Society, London, Special Publications, 33:95-107, doi:10.1144/GSL.SP.1987.033.01.08 --- Early and Middle Proterozoic Volcanic Suites of the Laurentian and North Atlantic Shields --- W. R. A. Baragar and R. F. J. Scoates: Volcanic Geochemistry of the Northern Segments of the Circum-Superior Belt of the Canadian Shield / Geological Society, London, Special Publications, 33:113-131, doi:10.1144/GSL.SP.1987.033.01.09 --- N. T. Arndt, G. E. Brügmann, K. Lehnert, C. Chauvel, and B. W. Chappell: Geochemistry, Petrogenesis and Tectonic Environment of Circum-Superior Belt Basalts, Canada / Geological Society, London, Special Publications, 33:133-145, doi:10.1144/GSL.SP.1987.033.01.10 --- J. F. Lewry, R. MacDonald, C. Livesey, M. Meyer, R. Van Schmus, and M. E. Bickford: U-Pb Geochronology of Accreted Terranes in the Trans-Hudson Orogen, Northern Saskatchewan, Canada / Geological Society, London, Special Publications, 33:147-166, doi:10.1144/GSL.SP.1987.033.01.11 --- B. R. Watters and J. A. Pearce: Metavolcanic Rocks of the La Ronge Domain in the Churchill Province, Saskatchewan: Geochemical Evidence for a Volcanic Arc Origin / Geological Society, London, Special Publications, 33:167-182, doi:10.1144/GSL.SP.1987.033.01.12 --- J. W. Gaskarth and G. R. Parslow: Proterozoic Volcanism in the Flin Flon Greenstone Belt, East-Central Saskatchewan, Canada / Geological Society, London, Special Publications, 33:183-200, doi:10.1144/GSL.SP.1987.033.01.13 --- Charles F. Gower and Bruce Ryan: Two Stage Felsic Volcanism in the Lower Proterozoic Upper Aillik Group, Labrador, Canada: Its Relationship to Syn- and Post-Kinematic Plutonism / Geological Society, London, Special Publications, 33:201-210, doi:10.1144/GSL.SP.1987.033.01.14 --- K. C. Condie: Early Proterozoic Volcanic Regimes in Southwestern North America / Geological Society, London, Special Publications, 33:211-218, doi:10.1144/GSL.SP.1987.033.01.15 --- A. N. LeCheminant, A. R. Miller, and G. M. LeCheminant: Early Proterozoic Alkaline Igneous Rocks, District of Keewatin, Canada: Petrogenesis and Mineralization / Geological Society, London, Special Publications, 33:219-240, doi:10.1144/GSL.SP.1987.033.01.16 --- A. B. Ryan, W. R. A. Baragar, and D. J. Kontak: Geochemistry, Tectonic Setting, and Mineralization of High-Potassium Middle Proterozoic Rocks in Central Labrador, Canada / Geological Society, London, Special Publications, 33:241-254, doi:10.1144/GSL.SP.1987.033.01.17 --- Y. A. Johnson, R. G. Park, and J. A. Winchester: Geochemistry, Petrogenesis and Tectonic Significance of the Early Proterozoic Loch Maree Group Amphibolites of the Lewisian Complex, NW Scotland / Geological Society, London, Special Publications, 33:255-269, doi:10.1144/GSL.SP.1987.033.01.18 --- Proterozoic Volcanic Suites of the Guiana Shield --- A. K. Gibbs: Proterozoic Volcanic Rocks of the Northern Guiana Shield, South America / Geological Society, London, Special Publications, 33:275-288, doi:10.1144/GSL.SP.1987.033.01.19 --- R. Renner and A. K. Gibbs: Geochemistry and Petrology of Metavolcanic Rocks of the Early Proterozoic Mazaruni Greenstone Belt, Northern Guyana / Geological Society, London, Special Publications, 33:289-309, doi:10.1144/GSL.SP.1987.033.01.20 --- Proterozoic Volcanic Suites of Africa --- R. E. Myers, R. G. Cawthorn, T. S. McCarthy, and C. R. Anhaeusser: Fundamental Uniformity in the Trace Element Patterns of the Volcanics of the Kaapvaal Craton from 3000 to 2100 Ma: Evidence for the Lithospheric Origin of These Continental Tholeiites / Geological Society, London, Special Publications, 33:315-325, doi:10.1144/GSL.SP.1987.033.01.21 --- D. L. Reid, A. J. Erlank, H. J. Welke, and A. Moyes: The Orange River Group: a Major Proterozoic Calcalkaline Volcanic Belt in the Western Namaqua Province, Southern Africa / Geological Society, London, Special Publications, 33:327-346, doi:10.1144/GSL.SP.1987.033.01.22 --- G. Borg and K. J. Maiden: Alteration of Late Middle Proterozoic Volcanics and its Relation to Stratabound Copper-Silver-Gold Mineralization Along the Margin of the Kalahari Craton in Swa/Namibia and Botswana / Geological Society, London, Special Publications, 33:347-354, doi:10.1144/GSL.SP.1987.033.01.23 --- J. H. Breitkopf and K. J. Maiden: Geochemical Patterns of Metabasites in the Southern Part of the Damara Orogen, SWA/Namibia: Applicability to the Recognition of Tectonic Environment / Geological Society, London, Special Publications, 33:355-361, doi:10.1144/GSL.SP.1987.033.01.24 --- P. M. Klemenic: The Geochemistry of Upper Proterozoic Lavas From the Red Sea Hills, NE Sudan / Geological Society, London, Special Publications, 33:363-372, doi:10.1144/GSL.SP.1987.033.01.25 --- Proterozoic Volcanic Suites of Australia --- L. A. I. Wyborn, R. W. Page, and A. J. Parker: Geochemical and Geochronological Signatures in Australian Proterozoic Igneous Rocks / Geological Society, London, Special Publications, 33:377-394, doi:10.1144/GSL.SP.1987.033.01.26 --- S. D. James, J. A. Pearce, and R. A. Oliver: The Geochemistry of the Lower Proterozoic Willyama Complex Volcanics, Broken Hill Block, New South Wales / Geological Society, London, Special Publications, 33:395-408, doi:10.1144/GSL.SP.1987.033.01.27 --- I. H. Wilson: Geochemistry of Proterozoic Volcanics, Mount Isa Inlier, Australia / Geological Society, London, Special Publications, 33:409-423, doi:10.1144/GSL.SP.1987.033.01.28 --- L. A. I. Wyborn: The Petrology and Geochemistry of Alteration Assemblages in the Eastern Creek Volcanics, as a Guide to Copper and Uranium Mobility Associated with Regional Metamorphism and Deformation, Mount Isa, Queensland / Geological Society, London, Special Publications, 33:425-434, doi:10.1144/GSL.SP.1987.033.01.29 --- Proterozoic Volcanic Suites of Asia --- Jia Chengzao: Geochemistry and Tectonics of the Xionger Group in the Eastern Qinling Mountains of China—a mid Proterozoic Volcanic arc Related to Plate Subduction / Geological Society, London, Special Publications, 33:436-448, doi:10.1144/GSL.SP.1987.033.01.30 --- Middle to Late Proterozoic Volcanic Suites of the North Atlantic Borderlands --- T. E. Smith and P. E. Holm: The Trace Element Geochemistry of Metavolcanics and Dykes From the Central Metasedimentary Belt of the Grenville Province, Southeastern Ontario, Canada / Geological Society, London, Special Publications, 33:453-470, doi:10.1144/GSL.SP.1987.033.01.31 --- T. S. Brewer and B. P. Atkin: Geochemical and Tectonic Evolution of the Proterozoic Telemark Supracrustals, Southern Norway / Geological Society, London, Special Publications, 33:471-487, doi:10.1144/GSL.SP.1987.033.01.32 --- J. A. Winchester, M. D. Max, and C. B. Long: Trace Element Geochemical Correlation in the Reworked Proterozoic Dalradian Metavolcanic Suites of the Western Ox Mountains and NW Mayo Inliers, Ireland / Geological Society, London, Special Publications, 33:489-502, doi:10.1144/GSL.SP.1987.033.01.33 --- G. J. Lees, R. A. Roach, M. M. Shufflebotham, and N. H. Griffiths: Upper Proterozoic Basaltic Volcanism in the Northern Massif Armoricain, France / Geological Society, London, Special Publications, 33:503-523, doi:10.1144/GSL.SP.1987.033.01.34 --- B. Cabanis, J. Chantraine, and D. Rabu: Geochemical Study of the Brioverian (late Proterozoic) Volcanic Rocks in the Northern Armorican Massif (France). Implications for Geodynamic Evolution During the Cadomian / Geological Society, London, Special Publications, 33:525-539, doi:10.1144/GSL.SP.1987.033.01.35 --- T. C. Pharaoh, P. C. Webb, R. S. Thorpe, and R. D. Beckinsale: Geochemical Evidence for the Tectonic Setting of Late Proterozoic Volcanic Suites in Central England / Geological Society, London, Special Publications, 33:541-552, doi:10.1144/GSL.SP.1987.033.01.36

Description / Table of Contents: J. C. Goff and B. P. J. Williams: Introduction / Geological Society, London, Special Publications, 34:NP, doi:10.1144/GSL.SP.1987.034.01.01 --- Section 1: Fluid Flow in Compacting Basins --- Richard E. Chapman: Fluid flow in sedimentary basins: a geologist’s perspective / Geological Society, London, Special Publications, 34:3-18, doi:10.1144/GSL.SP.1987.034.01.02 --- Kinji Magara: Fluid flow due to sediment loading—an application to the Arabian Gulf region / Geological Society, London, Special Publications, 34:19-28, doi:10.1144/GSL.SP.1987.034.01.03 --- Section 2: Fluid Flow in the Western Canadian Sedimentary Basin --- Brian Hitchon, S. Bachu, C. M. Sauveplane, and A. T. Lytviak: Dynamic basin analysis: an integrated approach with large data bases / Geological Society, London, Special Publications, 34:31-44, doi:10.1144/GSL.SP.1987.034.01.04 --- J. Tóth and T. Corbet: Post-Palaeocene evolution of regional groundwater flow systems and their relation to petroleum accumulations, Taber Area, southern Alberta, Canada / Geological Society, London, Special Publications, 34:45-77, doi:10.1144/GSL.SP.1987.034.01.05 --- F. W. Jones and J. A. Majorowicz: Some aspects of the thermal regime and hydrodynamics of the western Canadian sedimentary basin / Geological Society, London, Special Publications, 34:79-85, doi:10.1144/GSL.SP.1987.034.01.06 --- Harry J. Bradbury and Grant R. Woodwell: Ancient fluid flow within foreland terrains / Geological Society, London, Special Publications, 34:87-102, doi:10.1144/GSL.SP.1987.034.01.07 --- Section 3: Fluid Flow in United Kingdom Groundwater Basins --- R. A. Downing, W. M. Edmunds, and I. N. Gale: Regional groundwater flow in sedimentary basins in the U.K. / Geological Society, London, Special Publications, 34:105-125, doi:10.1144/GSL.SP.1987.034.01.08 --- A. H. Bath, A. E. Milodowski, and G. E. Strong: Fluid flow and diagenesis in the East Midlands Triassic sandstone aquifer / Geological Society, London, Special Publications, 34:127-140, doi:10.1144/GSL.SP.1987.034.01.09 --- Michael Price: Fluid flow in the Chalk of England / Geological Society, London, Special Publications, 34:141-156, doi:10.1144/GSL.SP.1987.034.01.10 --- N. P. Wilson and M. N. Luheshi: Thermal aspects of the East Midlands aquifer system / Geological Society, London, Special Publications, 34:157-169, doi:10.1144/GSL.SP.1987.034.01.11 --- Section 4: Fluid Flow in Low Permeability and Fractured Media --- J. Alexander, J. H. Black, and M. A. Brightman: The role of low-permeability rocks in regional flow / Geological Society, London, Special Publications, 34:173-183, doi:10.1144/GSL.SP.1987.034.01.12 --- J. H. Black: Flow and flow mechanisms in crystalline rock / Geological Society, London, Special Publications, 34:185-200, doi:10.1144/GSL.SP.1987.034.01.13 --- David A. Brown: The flow of water and displacement of hydrocarbons in fractured chalk reservoirs / Geological Society, London, Special Publications, 34:201-218, doi:10.1144/GSL.SP.1987.034.01.14

Description / Table of Contents: Jim Marshall: Diagenesis and Sedimentary Sequences—Introduction / Geological Society, London, Special Publications, 36:v-vi, doi:10.1144/GSL.SP.1987.036.01.01: Diagenetic Processes --- Ian R. Goldsmith and Peter King: Hydrodynamic modelling of cementation patterns in modern reefs / Geological Society, London, Special Publications, 36:1-13, doi:10.1144/GSL.SP.1987.036.01.02 --- H. G. Machel: Some aspects of diagenetic sulphate-hydrocarbon redox reactions / Geological Society, London, Special Publications, 36:15-28, doi:10.1144/GSL.SP.1987.036.01.03 --- S. N. Palmer and M. E. Barton: Porosity reduction, microfabric and resultant lithification in UK uncemented sands / Geological Society, London, Special Publications, 36:29-40, doi:10.1144/GSL.SP.1987.036.01.04 --- R. Raiswell: Non-steady state microbiological diagenesis and the origin of concretions and nodular limestones / Geological Society, London, Special Publications, 36:41-54, doi:10.1144/GSL.SP.1987.036.01.05 --- E. A. Warren: The application of a solution-mineral equilibrium model to the diagenesis of Carboniferous sandstones, Bothamsall oilfield, East Midlands, England / Geological Society, London, Special Publications, 36:55-69, doi:10.1144/GSL.SP.1987.036.01.06 --- Early Diagenesis --- T. R. Astin: Petrology (including fluorescence microscopy) of cherts from the Portlandian of Wiltshire, UK—evidence of an episode of meteoric water circulation / Geological Society, London, Special Publications, 36:73-85, doi:10.1144/GSL.SP.1987.036.01.07 --- Greg A. Carson: Silicification fabrics from the Cenomanian and basal Turonian of Devon, England: isotopic results / Geological Society, London, Special Publications, 36:87-102, doi:10.1144/GSL.SP.1987.036.01.08 --- J. D. Kantorowicz, I. D. Bryant, and J. M. Dawans: Controls on the geometry and distribution of carbonate cements in Jurassic sandstones: Bridport Sands, southern England and Viking Group, Troll Field, Norway / Geological Society, London, Special Publications, 36:103-118, doi:10.1144/GSL.SP.1987.036.01.09 --- J. J. Pueyo Mur and M. Inglés Urpinell: Magnesite formation in recent playa lakes, Los Monegros, Spain / Geological Society, London, Special Publications, 36:119-122, doi:10.1144/GSL.SP.1987.036.01.10 --- C. Taberner and C. Santisteban: Mixed-water dolomitization in a transgressive beach-ridge system, Eocene Catalan Basin, NE Spain / Geological Society, London, Special Publications, 36:123-139, doi:10.1144/GSL.SP.1987.036.01.11 --- R. D. A. Smith: Early diagenetic phosphate cements in a turbidite basin / Geological Society, London, Special Publications, 36:141-156, doi:10.1144/GSL.SP.1987.036.01.12 --- Zhao Xun and Ian J. Fairchild: Mixing zone dolomitization of Devonian carbonates, Guangxi, South China / Geological Society, London, Special Publications, 36:157-170, doi:10.1144/GSL.SP.1987.036.01.13 --- Regional Studies and Burial Diagenesis --- A. H. Bath, A. E. Milodowski, and B. Spiro: Diagenesis of carbonate cements in Permo-Triassic sandstones in the Wessex and East Yorkshire-Lincolnshire Basins, UK: a stable isotope study / Geological Society, London, Special Publications, 36:173-190, doi:10.1144/GSL.SP.1987.036.01.14 --- J. R. Boles: Six million year diagenetic history, North Coles Levee, San Joaquin Basin, California / Geological Society, London, Special Publications, 36:191-200, doi:10.1144/GSL.SP.1987.036.01.15 --- D. Emery: Trace-element source and mobility during limestone burial diagenesis—an example from the Middle Jurassic of eastern England / Geological Society, London, Special Publications, 36:201-217, doi:10.1144/GSL.SP.1987.036.01.16 --- Lynton S. Land and R. Stephen Fisher: Wilcox sandstone diagenesis, Texas Gulf Coast: a regional isotopic comparison with the Frio Formation / Geological Society, London, Special Publications, 36:219-235, doi:10.1144/GSL.SP.1987.036.01.17 --- David C. Harris and William J. Meyers: Regional dolomitization of subtidal shelf carbonates: Burlington and Keokuk Formations (Mississippian), Iowa and Illinois / Geological Society, London, Special Publications, 36:237-258, doi:10.1144/GSL.SP.1987.036.01.18 --- J. D. Hudson and J. E. Andrews: The diagenesis of the Great Estuarine Group, Middle Jurassic, Inner Hebrides, Scotland / Geological Society, London, Special Publications, 36:259-276, doi:10.1144/GSL.SP.1987.036.01.19 --- Fred J. Longstaffe and Avner Ayalon: Oxygen-isotope studies of clastic diagenesis in the Lower Cretaceous Viking Formation, Alberta: implications for the role of meteoric water / Geological Society, London, Special Publications, 36:277-296, doi:10.1144/GSL.SP.1987.036.01.20 --- J. Parnell: Secondary porosity in hydrocarbon-bearing transgressive sandstones on an unstable Lower Palaeozoic continental shelf, Welsh Borderland / Geological Society, London, Special Publications, 36:297-312, doi:10.1144/GSL.SP.1987.036.01.21 --- G. C. Saigal and K. Bjørlykke: Carbonate cements in clastic reservoir rocks from offshore Norway—relationships between isotopic composition, textural development and burial depth / Geological Society, London, Special Publications, 36:313-324, doi:10.1144/GSL.SP.1987.036.01.22 --- G. E. Strong and A. E. Milodowski: Aspects of the diagenesis of the Sherwood Sandstones of the Wessex Basin and their influence on reservoir characteristics / Geological Society, London, Special Publications, 36:325-337, doi:10.1144/GSL.SP.1987.036.01.23 --- C. B. de Wet: Deposition and diagenesis in an extensional basin: the Corallian Formation (Jurassic) near Oxford, England / Geological Society, London, Special Publications, 36:339-353, doi:10.1144/GSL.SP.1987.036.01.24

Description / Table of Contents: Andrew C. Scott: Coal and coal-bearing strata: recent advances and future prospects / Geological Society, London, Special Publications, 32:1-6, doi:10.1144/GSL.SP.1987.032.01.01 --- P. D. Moore: Ecological and hydrological aspects of peat formation / Geological Society, London, Special Publications, 32:7-15, doi:10.1144/GSL.SP.1987.032.01.02 --- R. S. Clymo: Rainwater-fed peat as a precursor of coal / Geological Society, London, Special Publications, 32:17-23, doi:10.1144/GSL.SP.1987.032.01.03 --- A. M. Ziegler, A. L. Raymond, T. C. Gierlowski, M. A. Horrell, D. B. Rowley, and A. L. Lottes: Coal, climate and terrestrial productivity: the present and early Cretaceous compared / Geological Society, London, Special Publications, 32:25-49, doi:10.1144/GSL.SP.1987.032.01.04 --- Peter J. McCabe: Facies studies of coal and coal-bearing strata / Geological Society, London, Special Publications, 32:51-66, doi:10.1144/GSL.SP.1987.032.01.05 --- Margaret E. Collinson and Andrew C. Scott: Implications of vegetational change through the geological record on models for coal-forming environments / Geological Society, London, Special Publications, 32:67-85, doi:10.1144/GSL.SP.1987.032.01.06 --- D. J. Casagrande: Sulphur in peat and coal / Geological Society, London, Special Publications, 32:87-105, doi:10.1144/GSL.SP.1987.032.01.07 --- Arthur D. Cohen, William Spackman, and Robert Raymond, Jr: Interpreting the characteristics of coal seams from chemical, physical and petrographic studies of peat deposits / Geological Society, London, Special Publications, 32:107-125, doi:10.1144/GSL.SP.1987.032.01.08 --- Marlies Teichmüller: Recent advances in coalification studies and their application to geology / Geological Society, London, Special Publications, 32:127-169, doi:10.1144/GSL.SP.1987.032.01.09 --- D. A. Spears: Mineral matter in coals, with special reference to the Pennine Coalfields / Geological Society, London, Special Publications, 32:171-185, doi:10.1144/GSL.SP.1987.032.01.10 --- K. M. Bartram: Lycopod succession in coals: an example from the Low Barnsley Seam (Westphalian B), Yorkshire, England / Geological Society, London, Special Publications, 32:187-199, doi:10.1144/GSL.SP.1987.032.01.11 --- I. M. Fulton: Genesis of the Warwickshire Thick Coal: a group of long-residence histosols / Geological Society, London, Special Publications, 32:201-218, doi:10.1144/GSL.SP.1987.032.01.12 --- D. K. Hobday: Gondwana coal basins of Australia and South Africa: tectonic setting, depositional systems and resources / Geological Society, London, Special Publications, 32:219-233, doi:10.1144/GSL.SP.1987.032.01.13 --- D. H. Land and C. M. Jones: Coal geology and exploration of part of the Tertiary Kutei Basin in East Kalimantan, Indonesia / Geological Society, London, Special Publications, 32:235-255, doi:10.1144/GSL.SP.1987.032.01.14 --- D. G. Murchison: Recent advances in organic petrology and organic geochemistry: an overview with some reference to ‘oil from coal’ / Geological Society, London, Special Publications, 32:257-302, doi:10.1144/GSL.SP.1987.032.01.15 --- Ganjavar Khavari Khorasani: Oil-prone coals of the Walloon Coal Measures, Surat Basin, Australia / Geological Society, London, Special Publications, 32:303-310, doi:10.1144/GSL.SP.1987.032.01.16

Description / Table of Contents: P. P. E. Weaver, J. Thomson, and P. M. Hunter: Introduction / Geological Society, London, Special Publications, 31:vii-xii, doi:10.1144/GSL.SP.1987.031.01.01 --- Orrin H. Pilkey: Sedimentology of basin plains / Geological Society, London, Special Publications, 31:1-12, doi:10.1144/GSL.SP.1987.031.01.02 --- A. Kuijpers, E. J. Th. Duin, and G. J. de Lange: Areal sedimentation rate patterns of the southern Nares Abyssal Plain, western N Atlantic / Geological Society, London, Special Publications, 31:13-22, doi:10.1144/GSL.SP.1987.031.01.03 --- Michael T. Ledbetter and Adam Klaus: Influence of bottom currents on sediment texture and sea-floor morphology in the Argentine Basin / Geological Society, London, Special Publications, 31:23-31, doi:10.1144/GSL.SP.1987.031.01.04 --- Robert B. Kidd, Peter M. Hunter, and Robert W. Simm: Turbidity-current and debris-flow pathways to the Cape Verde Basin: status of long-range side-scan sonar (GLORIA) surveys / Geological Society, London, Special Publications, 31:33-48, doi:10.1144/GSL.SP.1987.031.01.05 --- R. C. Searle: Regional setting and geophysical characterization of the Great Meteor East area in the Madeira Abyssal Plain / Geological Society, London, Special Publications, 31:49-70, doi:10.1144/GSL.SP.1987.031.01.06 --- P. P. E. Weaver and R. G. Rothwell: Sedimentation on the Madeira Abyssal Plain over the last 300 000 years / Geological Society, London, Special Publications, 31:71-86, doi:10.1144/GSL.SP.1987.031.01.07 --- S. R. J. Williams: Faulting in abyssal-plain sediments, Great Meteor East, Madeira Abyssal Plain / Geological Society, London, Special Publications, 31:87-104, doi:10.1144/GSL.SP.1987.031.01.08 --- Q. J. Huggett: Mapping of hemipelagic versus turbiditic muds by feeding traces observed in deep-sea photographs / Geological Society, London, Special Publications, 31:105-112, doi:10.1144/GSL.SP.1987.031.01.09 --- P. J. Schultheiss and M. Noel: Evidence of pore-water advection in the Madeira Abyssal Plain from pore-pressure and temperature measurements / Geological Society, London, Special Publications, 31:113-129, doi:10.1144/GSL.SP.1987.031.01.10 --- L. E. Shephard, A. K. Rutledge, W. R. Bryant, and K. M. Moran: Geotechnical characteristics of fine-grained turbidite sequences from the Nares Abyssal Plain / Geological Society, London, Special Publications, 31:131-146, doi:10.1144/GSL.SP.1987.031.01.11 --- Gert J. de Lange, Ian Jarvis, and Antoon Kuijpers: Geochemical characteristics and provenance of late Quaternary sediments from the Madeira Abyssal Plain, N Atlantic / Geological Society, London, Special Publications, 31:147-165, doi:10.1144/GSL.SP.1987.031.01.12 --- J. Thomson, S. Colley, N. C. Higgs, D. J. Hydes, T. R. S. Wilson, and J. Sørensen: Geochemical oxidation fronts in NE Atlantic distal turbidites and their effects in the sedimentary record / Geological Society, London, Special Publications, 31:167-177, doi:10.1144/GSL.SP.1987.031.01.13 --- Ian Jarvis and Nigel Higgs: Trace-element mobility during early diagenesis in distal turbidites: late Quaternary of the Madeira Abyssal Plain, N Atlantic / Geological Society, London, Special Publications, 31:179-214, doi:10.1144/GSL.SP.1987.031.01.14 --- D. Heggie, C. Maris, A. Hudson, J. Dymond, R. Beach, and J. Cullen: Organic carbon oxidation and preservation in NW Atlantic continental margin sediments / Geological Society, London, Special Publications, 31:215-236, doi:10.1144/GSL.SP.1987.031.01.15

Description / Table of Contents: J. G. Fitton and B. G. J. Upton: Introduction / Geological Society, London, Special Publications, 30:ix-xiv, doi:10.1144/GSL.SP.1987.030.01.01 --- D. K. Bailey: Mantle metasomatism—perspective and prospect / Geological Society, London, Special Publications, 30:1-13, doi:10.1144/GSL.SP.1987.030.01.02 --- Martin Menzies: Alkaline rocks and their inclusions: a window on the Earth’s interior / Geological Society, London, Special Publications, 30:15-27, doi:10.1144/GSL.SP.1987.030.01.03 --- A. D. Edgar: The genesis of alkaline magmas with emphasis on their source regions: inferences from experimental studies / Geological Society, London, Special Publications, 30:29-52, doi:10.1144/GSL.SP.1987.030.01.04 --- M. J. Le Bas: Nephelinites and carbonatites / Geological Society, London, Special Publications, 30:53-83, doi:10.1144/GSL.SP.1987.030.01.05 --- James D. Twyman and John Gittins: Alkalic carbonatite magmas: parental or derivative? / Geological Society, London, Special Publications, 30:85-94, doi:10.1144/GSL.SP.1987.030.01.06 --- J. B. Dawson: The kimberlite clan: relationship with olivine and leucite lamproites, and inferences for upper-mantle metasomatism / Geological Society, London, Special Publications, 30:95-101, doi:10.1144/GSL.SP.1987.030.01.07 --- Steven C. Bergman: Lamproites and other potassium-rich igneous rocks: a review of their occurrence, mineralogy and geochemistry / Geological Society, London, Special Publications, 30:103-190, doi:10.1144/GSL.SP.1987.030.01.08 --- Nicholas M.S. Rock: The nature and origin of lamprophyres: an overview / Geological Society, London, Special Publications, 30:191-226, doi:10.1144/GSL.SP.1987.030.01.09 --- David A. Clague: Hawaiian alkaline volcanism / Geological Society, London, Special Publications, 30:227-252, doi:10.1144/GSL.SP.1987.030.01.10 --- Barry L. Weaver, David A. Wood, John Tarney, and Jean Louis Joron: Geochemistry of ocean island basalts from the South Atlantic: Ascension, Bouvet, St. Helena, Gough and Tristan da Cunha / Geological Society, London, Special Publications, 30:253-267, doi:10.1144/GSL.SP.1987.030.01.11 --- Chris Harris and Simon M.F. Sheppard: Magma and fluid evolution in the lavas and associated granite xenoliths of Ascension Island / Geological Society, London, Special Publications, 30:269-272, doi:10.1144/GSL.SP.1987.030.01.12 --- J. G. Fitton: The Cameroon line, West Africa: a comparison between oceanic and continental alkaline volcanism / Geological Society, London, Special Publications, 30:273-291, doi:10.1144/GSL.SP.1987.030.01.13 --- B.H. Baker: Outline of the petrology of the Kenya rift alkaline province / Geological Society, London, Special Publications, 30:293-311, doi:10.1144/GSL.SP.1987.030.01.14 --- R. Macdonald: Quaternary peralkaline silicic rocks and caldera volcanoes of Kenya / Geological Society, London, Special Publications, 30:313-333, doi:10.1144/GSL.SP.1987.030.01.15 --- A. R. Woolley and G. C. Jones: The petrochemistry of the northern part of the Chilwa alkaline province, Malawi / Geological Society, London, Special Publications, 30:335-355, doi:10.1144/GSL.SP.1987.030.01.16 --- P. Bowden, R. Black, R. F. Martin, E. C. Ike, J. A. Kinnaird, and R. A. Batchelor: Niger-Nigerian alkaline ring complexes: a classic example of African Phanerozoic anorogenic mid-plate magmatism / Geological Society, London, Special Publications, 30:357-379, doi:10.1144/GSL.SP.1987.030.01.17 --- J. P. Liégeois and R. Black: Alkaline magmatism subsequent to collision in the Pan-African belt of the Adrar des Iforas (Mali) / Geological Society, London, Special Publications, 30:381-401, doi:10.1144/GSL.SP.1987.030.01.18 --- C. J. N. Fletcher and B. Beddoe-Stephens: The petrology, chemistry and crystallization history of the Velasco alkaline province, eastern Bolivia / Geological Society, London, Special Publications, 30:403-413, doi:10.1144/GSL.SP.1987.030.01.19 --- Daniel S. Barker: Tertiary alkaline magmatism in Trans-Pecos Texas / Geological Society, London, Special Publications, 30:415-431, doi:10.1144/GSL.SP.1987.030.01.20 --- G. Nelson Eby: The Monteregian Hills and White Mountain alkaline igneous provinces, eastern North America / Geological Society, London, Special Publications, 30:433-447, doi:10.1144/GSL.SP.1987.030.01.21 --- B.G.J. Upton and C.H. Emeleus: Mid-Proterozoic alkaline magmatism in southern Greenland: the Gardar province / Geological Society, London, Special Publications, 30:449-471, doi:10.1144/GSL.SP.1987.030.01.22 --- Lotte Melchior Larsen and Henning Sørensen: The Ilímaussaq intrusion—progressive crystallization and formation of layering in an agpaitic magma / Geological Society, London, Special Publications, 30:473-488, doi:10.1144/GSL.SP.1987.030.01.23 --- T. F. D. Nielsen: Tertiary alkaline magmatism in East Greenland: a review / Geological Society, London, Special Publications, 30:489-515, doi:10.1144/GSL.SP.1987.030.01.24 --- Hilary Downes: Tertiary and Quaternary volcanism in the Massif Central, France / Geological Society, London, Special Publications, 30:517-530, doi:10.1144/GSL.SP.1987.030.01.25 --- L. N. Kogarko: Alkaline rocks of the eastern part of the Baltic Shield (Kola Peninsula) / Geological Society, London, Special Publications, 30:531-544, doi:10.1144/GSL.SP.1987.030.01.26

Description / Table of Contents: Mervyn E. Jones and R. M. F. Preston: Introduction / Geological Society, London, Special Publications, 29:1-8, doi:10.1144/GSL.SP.1987.029.01.01 --- Part I: Theory and Experimental --- G. Owen: Deformation processes in unconsolidated sands / Geological Society, London, Special Publications, 29:11-24, doi:10.1144/GSL.SP.1987.029.01.02 --- J. P. Gratier: Pressure solution-deposition creep and associated tectonic differentiation in sedimentary rocks / Geological Society, London, Special Publications, 29:25-38, doi:10.1144/GSL.SP.1987.029.01.03 --- G. Mandl and R. M. Harkness: Hydrocarbon migration by hydraulic fracturing / Geological Society, London, Special Publications, 29:39-53, doi:10.1144/GSL.SP.1987.029.01.04 --- C. R. I. Clayton and M. C. Matthews: Deformation, diagenesis and the mechanical behaviour of chalk / Geological Society, London, Special Publications, 29:55-62, doi:10.1144/GSL.SP.1987.029.01.05 --- R. J. Allison: Non-destructive determination of Young’s modulus and its relationship with compressive strength, porosity and density / Geological Society, London, Special Publications, 29:63-69, doi:10.1144/GSL.SP.1987.029.01.06 --- Alex J. Maltman: A laboratory technique for investigating the deformation microstructures of water-rich sediments / Geological Society, London, Special Publications, 29:71-76, doi:10.1144/GSL.SP.1987.029.01.07 --- Alex. J. Maltman: Shear zones in argillaceous sediments—an experimental study / Geological Society, London, Special Publications, 29:77-87, doi:10.1144/GSL.SP.1987.029.01.08 --- Part II: Processes --- John R. Underhill and Nigel H. Woodcock: Faulting mechanisms in high-porosity sandstones; New Red Sandstone, Arran, Scotland / Geological Society, London, Special Publications, 29:91-105, doi:10.1144/GSL.SP.1987.029.01.09 --- Jean-Pierre Petit and Edgard Laville: Morphology and microstructures of hydroplastic slickensides in sandstone / Geological Society, London, Special Publications, 29:107-121, doi:10.1144/GSL.SP.1987.029.01.10 --- Michel Guiraud and Michel Séguret: Soft-sediment microfaulting related to compaction within the fluviodeltaic infill of the Soria strike-slip basin (northern Spain) / Geological Society, London, Special Publications, 29:123-136, doi:10.1144/GSL.SP.1987.029.01.11 --- Michael Leeder: Sediment deformation structures and the palaeotectonic analysis of sedimentary basins, with a case-study from the Carboniferous of northern England / Geological Society, London, Special Publications, 29:137-144, NP, 145-146, doi:10.1144/GSL.SP.1987.029.01.12 --- Pierre Labaume: Syn-diagenetic deformation of a turbiditic succession related to submarine gravity nappe emplacement, Autapie Nappe, French Alps / Geological Society, London, Special Publications, 29:147-163, doi:10.1144/GSL.SP.1987.029.01.13 --- S.A. Schack Pedersen: Comparative studies of gravity tectonics in Quaternary sediments and sedimentary rocks related to fold belts / Geological Society, London, Special Publications, 29:165-179, doi:10.1144/GSL.SP.1987.029.01.14 --- S. G. Farrell and S. Eaton: Slump strain in the Tertiary of Cyprus and the Spanish Pyrenees. Definition of palaeoslopes and models of soft-sediment deformation / Geological Society, London, Special Publications, 29:181-196, doi:10.1144/GSL.SP.1987.029.01.15 --- P. M. Clifford, M. C. Rice, L. L. Pryer, and F. Fueten: Mass transfer in unmetamorphosed carbonates and during low-grade metamorphism of arenites / Geological Society, London, Special Publications, 29:197-209, doi:10.1144/GSL.SP.1987.029.01.16 --- Part III: Descriptive --- K. T. Pickering: Wet-sediment deformation in the Upper Ordovician Point Leamington Formation: an active thrust-imbricate system during sedimentation, Notre Dame Bay, north-central Newfoundland / Geological Society, London, Special Publications, 29:213-218,NP,219-232,NP,234-239, doi:10.1144/GSL.SP.1987.029.01.17 --- Krzysztof Brodzikowski, Roman Gotowała, Ludwik Kasza, and Antonius J. Van Loon: The Kleszczów Graben (central Poland): reconstruction of the deformational history and inventory of the resulting soft-sediment deformational structures / Geological Society, London, Special Publications, 29:241-254, doi:10.1144/GSL.SP.1987.029.01.18 --- K. Brodzikowski, R. Gotowała, A. Hałuszczak, D. Krzyszkowski, and A. J. Van Loon: Soft-sediment deformations from glaciodeltaic, glaciolacustrine and fluviolacustrine sediments in the Kleszczów Graben (central Poland) / Geological Society, London, Special Publications, 29:255-267, doi:10.1144/GSL.SP.1987.029.01.19 --- Krzysztof Brodzikowski, Dariusz Krzyszkowski, and Antonius J. Van Loon: Endogenic processes as a cause of penecontemporaneous soft-sediment deformations in the fluviolacustrine Czyżów Series (Kleszczów Graben, central Poland) / Geological Society, London, Special Publications, 29:269-278, doi:10.1144/GSL.SP.1987.029.01.20 --- Krzysztof Brodzikowski and Andrzej Hałuszczak: Flame structures and associated deformations in Quaternary glaciolacustrine and glaciodeltaic deposits: examples from central Poland / Geological Society, London, Special Publications, 29:279-286, doi:10.1144/GSL.SP.1987.029.01.21 --- Krzysztof Brodzikowski, Andrzej Hałuszczak, Dariusz Krzyszkowski, and Antonius J. Van Loon: Genesis and diagnostic value of large-scale gravity-induced penecontemporaneous deformation horizons in Quaternary sediments of the Kleszczów Graben (central Poland) / Geological Society, London, Special Publications, 29:287-298, doi:10.1144/GSL.SP.1987.029.01.22 --- Colin A. Davenport and Philip S. Ringrose: Deformation of Scottish Quaternary sediment sequences by strong earthquake motions / Geological Society, London, Special Publications, 29:299-314, doi:10.1144/GSL.SP.1987.029.01.23 --- J. Alexander: Syn-sedimentary and burial related deformation in the Middle Jurassic non-marine formations of the Yorkshire Basin / Geological Society, London, Special Publications, 29:315-324, doi:10.1144/GSL.SP.1987.029.01.24 --- Bill Fitches: Aspects of veining in the Welsh Lower Palaeozoic Basin / Geological Society, London, Special Publications, 29:325-342, doi:10.1144/GSL.SP.1987.029.01.25

Description / Table of Contents: Large temperature gradients applied to a snow cover drive water vapor upwards and result in rapid recrystallization of snow crystals. The same temperature gradients create gradients of air density that can cause flows of air through the snow cover. The formalism necessary to describe these flows I developed heroin an effort to include the convection of vapor in the understanding of snow metamorphism. The theory of convection through porous media is extended here to include the transport of water vapor, which is important because of its latent heat. Results are presented in terms of a Lewis number, defined as the ratio of thermal to mass diffusivities. For Lewis numbers greater than 1.0 phase change intensifies convection, and for Lewis numbers less than 1.0 phase change retards convection. Two boundary conditions of special interest in the study of snow, a constant heat flux bottom and a permeable top are investigated. Their influence on the transfer of heat is quantified, and it is found that heat transfer can be described as a linear function of the driving force for convection. Convection in sloped layers is quantified, and explained in a physically consistent manner. The effect of a permeable top on convection at low Rayleigh numbers is derived. Experiments are performed to measure the effects of convection on heat transfer through glass beads and snow. The model results using constant flux boundary conditions are confirmed by the experiments. Experiments show that convection can occur in snow, and that convection behaves in a manner consistent with our theoretical understanding of the phenomenon. Some uncertainty exists about the permeability and thermal conductivity of snow and hence it is uncertain if thermal convection would occur for a given temperature gradient, density and thickness. Also, for a given convective intensity, there is much uncertainty about how much the rate of snow metamorphism is increased.

Description / Table of Contents: Various methods of generating synthetic seismograms are reviewed and examples of recent applicatiors of the methods are cited. Body waves, surface waves, and normal modes are considered. The analytical methods reviewed include geometric ray theory, generalized ray theory (Cagniard-de Hoop method), asymptotic ray theory, reflectivity method, fullwave theory, and hybrid methods combining ray theory and mode theory. Two numerical methods, those of finite differences and finite elements, and a hybrid method combining finite differences with asymptotic ray theory are described Limitations on the application or validity of the various methods are stated.

Description / Table of Contents: This report presents the results of tests of the ice friction coefficient carried out during the May 1984 expedition of the F.S. Polarstern off the coast of Labrador. The test surfaces were Inerta-160-coated steel plates and bare steel plates, hand roughened and sandblasted. The main findings of the studies were: 1) columnar and granularpea ice showed no significant differences in friction coefficient; 2) for columnar ice was independent of ice crystal orientation with respect to test surface; 3) was Independent of normal pressure applied on ice sample; 4) initially decreased with increasing relative velocity between the Ice sample and the test surface and reached a steady value at higher speeds; 5) Uk increased with increasing surface roughness; 6) a wetting surface exhibited a higher friction coefficient than a non-wetting surface of the same or even higher roughness average.

Description / Table of Contents: An expensive drill has been modified to provide researchers with the ability to auger an open hole or to acquire continuous, undisturbed 76-mm-diam core samples of a variety of perennially frozen materials that are suitable for chemical and petrographic analysis. It was developed by field testing in support of research from 1980 to 1983. Operation of the drill is based mainly on using a minimum of power to cut through frozen ground with tungsten carbide cutters on a CRREL coring auger. The ice content, temperature and grain size of the frozen sediments are important variables determining the sampling depth. Perennially frozen sediments with temperatures in the range of -0.5 C to -8.5 C have been continuously cored with this drill. Drilling and sampling are most efficiently conducted when ambient air temperatures are below freezing and the active layer is frozen. The self-contained lightweight drill is readily transportable off-road by helicopter or tracked vehicle, or by towing over roads. It is locally self-mobile by use of a winch. Total cost of the drill and modifications is estimated at approximately $10,000.

Description / Table of Contents: In the past all theoretical analyses for rapidly sheared granular flows assumed that the granular solids are either disks or spheres and are uniform in size. However, natural materials that create these granular flows are in general irregular in shape and have various spectra of sizes. The stress and rate of energy dissipation levels in granular flows are significantly influenced by the size distribution. In part 1 of this report series (AD-A154 045), the formulation of the constitutive equations considering a two-size granular mixture is presented, where the ratio of the two sizes is nearly one. In part 2, the constitutive equations for a two-size mixture are extended to include a general size ratio. In addition, a complete spectrum of size distribution is incorporated, which allows the quantification of the size distribution effect in the most general way. In analyzing the stresses, intergranular collision is assumed to be the major dynamic activity at the microscopic level. Because of the present limited knowledge of testing shape effects, the analysis is confined to the flow of either disks or spheres. The result of this work provides necessary information for a more realistic analysis of natural and industrial granular flow. Keywords: Granular flow, and Particle size distribution.

Description / Table of Contents: A dynamic-thermodynamic sea ice model is extended to include a full thermodynamic code and a complete multilevel ice thickness distribution. The variable thickness formulation includes a more realistic parameterization of ice ridging than used in previous models. Seasonal simulations have been performed using this model and the results have been analyzed with particular emphasis on examination of the ridge buildup results off the Canadian Archipelago and off the North Slope. This report presents a complete description of this model and discusses progress made on examining and testing the variable thickness extensions.

Description / Table of Contents: A method for the analysis of TNT, RDX and HMX explosives in soils and sediments has been developed. It consists of methanol extraction followed by reversed-phase high performance liquid chromatography using 10% acetonitrile/40% methanol/50% water as the eluant. This method was used to study the effect of various drying techniques upon the recovery of TNT, RDX, and HMX from soil and sediment samples contaminated with high (%) and low (micron g/g) levels of these explosives. For highly contaminated samples, complete recovery of TNT and RDX was obtained using freeze drying while air drying at room temperature resulted in greater than 90% recovery for both explosives. Other techniques, such as oven drying at 105 C, oven drying at 45 C, microwave oven drying, and drying under infrared lamps, all resulted in greater losses, with TNT and RDX recoveries ranging from 76 to 90%. Drying losses were not due to simple volatilization containing low levels of TNT, RDX and HMX, recoveries of all three explosives were quantitative for all the above drying techniques.

Description / Table of Contents: Tests in level ice on an idealized icebreaker bow in the shape of a simple wedge were conducted in the test basin. The horizontal and vertical forces on the wedge were measured, and floe size distribution in the wake of the wedge was observed. From the force measurements, the ice wedge/hull friction factor was calculated and found to be in general agreement with the friction factor measured in separate friction tests. The ice floe length and ice floe area measured in the current study were found to follow log-normal probability distributions defined by the length average L and area average A and corresponding standard deviations SL and SA. The results of these tests and other tests conducted at another facility showed that the ratios A/h2 and L/h (A =average floe area, L averagefloe length, h = ice thickness) were, for the same type of model ice, directly proportional to the parameter y/-yh. (a = ice bending strength, tj7= specific weight of water) and a/y, respectively, and independent of the velocity and ice strain modulus or ice characteristic* length. However, the coefficients of proportionality appear to depend upon the type of model ice used in the tests. The ratios Si/A were independent of o/yh but varied with the bow shape and the type of ice. The available field data are not sufficient for meaningful comparison with the laboratory results.

Description / Table of Contents: This report presents the results of the second phase of a test program designed to obtain a comprehensive understanding of the mechanical properties of multi-year sea ice from the Alaskan Beaufort Sea. In Phase 2, 62 constant-strain-rate uniaxial compression tests were performed on horizontal and vertical ice samples from multi-year pressure ridges to examine the effect of sample orientation on ice strength. Also conducted were 36 constant-strain-rate tension tests, 55 conventional triaxial tests and 35 constant-load compression tests on multi-year pressure ridge samples to provide data for developing ice yield criteria and constitutive laws. Data are presented on the strength, failure strain and modulus of multi-year sea ice under different loading conditions. The effects of ice temperature, porosity, structure, strain rate, confining pressure and sample orientation on the mechanical properties of multi-year sea ice are examined.

Description / Table of Contents: Concern over the environmental fate of explosives has brought about the development of sensitive analytical methods for measuring them in groundwater. In turn this concern has been extended to validating the sampling procedures for groundwater. This report addresses the potential effects of residual drilling muds on the analysis for explosive contaminants (TNT, DNT, RDX, and HMX) in monitoring wells. The approach was to determine sorption isotherms for each contaminant. Sorption appeared to be independent of solids concentration. Linear isotherms were obtained for RDX and HMX over a range of analytic concentrations; therefore, a single constant can be used to estimate the amount sorbed when the solution concentration is known. Isotherms for TNT and DNT were not linear, however. Scatchard analysis suggested that the isotherms for these analytes could be resolved into two predominant components: a linear component above a certain sorbed quantity and a Langmuir-type component below this quantity. The experimental data were fitted by regression analysis using the appropriate model. The equations developed can be used to predict the sorbed fraction (analytical bias) for any combination of solids and analyte concentration. The amounts of bentonite found in some existing wells do not appear to be sufficient to cause significant bias in analyses for these explosive contaminants.