ALBERT

Description / Table of Contents: Variations in seismic Q are sensitive to a much greater extent than are seismic velocity variations on factors such as temperature, fluid content, and the movement of solid state defects in the earth. For that reason an understanding of Q and its variation with position in the earth and with time should provide information in earth's tectonic evolution, as well as on aspects of its internal structure. Progress in understanding Q has suffered from difficulty in obtaining reliable amplitude data at global and temporary stations. Moreover, laboratory determinations of Q, until recently, were most often made at frequencies much higher than those measured by seismologists for waves propagating through the earth. Recent advances in seismic station distribution and quality, as well as in methodology at both high and low fequencies, have greatly improved the quality of observational data available to seismologists from global stations. Concurrent advances have been made in measuring Q using laboratory samples at frequencies that pertain to the earth and in theoretical understanding of seismic wave attenuation. Papers of this volume present new information on Q in the earth from several perspectives: methodology, results from global and regional observations of both body and surface waves, laboratory measurements, and theoretical understanding. The editors believe that we have reached a new threshold in Q studies and that advances in data quality and methodology will spur increased interest in this difficult, but interesting field.

Description / Table of Contents: This volume contains 18 papers from 8 countries dealing with different aspects of triggered and induced seismicity. In situ observations of the phenomenon include examples of seismicity due to reservoirs, hard-rock mines, coal mines, mine collapses, brine production caverns, fluid injections, and geothermal hot-dry-rock projects. High-frequency acoustic emission studies from laboratory experiments and hard-rock mines have also been reported. Besides providing case studies of previously unavailable observations of seismicity, the present volume contains investigations of the causes and source mechanism of seismic events, determination of source parameters, seismic hazard as related to the design of support systems for underground openings and procedures for closure of brine production caverns, and the use of seismic and non-destructive techniques in assessing rock damage, measuring dynamic elastic moduli and detecting discontinuities. This collection of papers provides an excellent indication of the state of the art, recent developments and outstanding challenges facing scientists and engineers in understanding the causes and alleviating the effects of induced seismicity.

Description / Table of Contents: The perturbation of the earth by mankind causes earthquakes in a variety of situations. This phenomenon continues to be a major concern to engineers and scientists concerned with the mitigation of the consequences of this seismicity, as well as better understanding the processes at its origin. The present volume contains twelve papers from six countries, dealing with observations of triggered and induced seismicity in four continents. The reported cases include seismicity due to hard-rock mines, coal mines, underground research facilities for nuclear waste disposal, water injections, reservoirs, acquifers and oil fields. This volume provides case studies of previously unavailable observations of this phenomenon, investigations of the cause and source mechanism of seismic events, studies of source location distributions, determinations of seismic source parameters, cases of the use of such parameters in assessing rockburst hazard in mines, and measurements of velocity an attenuation properties of rock masses. The present collection of papers provides an excellent indication of the current state of the art and new developments in this area of research.

Description / Table of Contents: This volume contains twenty-five research papers on seismicity patterns, their interpretation and their possible relevance to learning how to predict earthquakes. The interpretation of seismicity patterns has become somewhat controversial. Some researchers present case histories suggesting that earthquakes may be predicted by increased seismic moment release or seismic quiescence and, in general, by understanding the processes of self-organized criticality. Others deny these hypotheses. Although the problem of recognizing foreshocks in real time remains unsolved, new properties of microearthquakes as a function of time are coming to light. Computer modeling of seismicity also is advancing in sophistication and relevance. Surprisingly, b-values seem to hold substantial information about varying local conditions of earthquake generation.

Description / Table of Contents: Measurement, Scaling and Calibration --- C. S. Bristow and B. J. Williamson: Spectral gamma ray logs: core to log calibration, facies analysis and correlation problems in the Southern North Sea / Geological Society, London, Special Publications, 136:1-7, doi:10.1144/GSL.SP.1998.136.01.01 --- P. W. M. Corbett, J. L. Jensen, and K. S. Sorbie: A review of up-scaling and cross-scaling issues in core and log data interpretation and prediction / Geological Society, London, Special Publications, 136:9-16, doi:10.1144/GSL.SP.1998.136.01.02 --- A. R. Duncan, G. Dean, and D. A. L. Collie: Quantitative density measurements from X-ray radiometry / Geological Society, London, Special Publications, 136:17-24, doi:10.1144/GSL.SP.1998.136.01.03 --- P. K. Harvey, T. S. Brewer, M. A. Lovell, and S. A. Kerr: The estimation of modal mineralogy: a problem of accuracy in core-log calibration / Geological Society, London, Special Publications, 136:25-38, doi:10.1144/GSL.SP.1998.136.01.04 --- M. A. Lovell, P. K. Harvey, P. D. Jackson, T. S. Brewer, G. Williamson, and C. G. Williams: Interpretation of core and log data—integration or calibration? / Geological Society, London, Special Publications, 136:39-51, doi:10.1144/GSL.SP.1998.136.01.05 --- M. H. Ramsey, P. J. Watkins, and M. S. Sams: Estimation of measurement uncertainty for in situ borehole determinations using a geochemical logging tool / Geological Society, London, Special Publications, 136:53-63, doi:10.1144/GSL.SP.1998.136.01.06 --- Physical and Chemical Properties --- Z. M. Ahmadi and A. L. Coe: Methods for simulating natural gamma ray and density wireline logs from measurements on outcrop exposures and samples: examples from the Upper Jurassic, England / Geological Society, London, Special Publications, 136:65-80, doi:10.1144/GSL.SP.1998.136.01.07 --- M. M. Herron and S. L. Herron: Quantitative lithology: open and cased hole application derived from integrated core chemistry and mineralogy database / Geological Society, London, Special Publications, 136:81-95, doi:10.1144/GSL.SP.1998.136.01.08 --- A. Kingdon, S. F. Rogers, C. J. Evans, and N. R. Brereton: The comparison of core and geophysical log measurements obtained in the Nirex investigation of the Sellafield region / Geological Society, London, Special Publications, 136:97-113, doi:10.1144/GSL.SP.1998.136.01.9 --- C. Lauer-Leredde, P. A. Pezard, F. Touron, and I. Dekeyser: Forward modelling of the physical properties of oceanic sediments: constraints from core and logs, with palaeoclimatic implications / Geological Society, London, Special Publications, 136:115-127, doi:10.1144/GSL.SP.1998.136.01.10 --- G. Wadge, D. Benaouda, G. Ferrier, R. B. Whitmarsh, R. G. Rothwell, and C. Macleod: Lithological classification within ODP holes using neural networks trained from integrated core-log data / Geological Society, London, Special Publications, 136:129-140, doi:10.1144/GSL.SP.1998.136.01.11 --- Petrophysical Relationships --- A. C. Bastos, L. D. Dillon, G. F. Vasquez, and J. A. Soares: Core-derived acoustic, porosity & permeability correlations for computation pseudo-logs / Geological Society, London, Special Publications, 136:141-146, doi:10.1144/GSL.SP.1998.136.01.12 --- P. S. Denicol and X. D. Jing: Effects of water salinity, saturation and clay content on the complex resistivity of sandstone samples / Geological Society, London, Special Publications, 136:147-157, doi:10.1144/GSL.SP.1998.136.01.13 --- J. R. Samworth: Complementary functions reveal data hidden in your logs / Geological Society, London, Special Publications, 136:159-171, doi:10.1144/GSL.SP.1998.136.01.14 --- A. Shakeel and M. S. King: Acoustic wave anisotropy in sandstones with systems of aligned cracks / Geological Society, London, Special Publications, 136:173-183, doi:10.1144/GSL.SP.1998.136.01.15 --- B. Widarsono, J. R. Marsden, and M. S. King: In situ stress prediction using differential strain analysis and ultrasonic shear-wave splitting / Geological Society, London, Special Publications, 136:185-195, doi:10.1144/GSL.SP.1998.136.01.16 --- R. H. Worden: Dolomite cement distribution in a sandstone from core and wireline data: the Triassic fluvial Chaunoy Formation, Paris Basin / Geological Society, London, Special Publications, 136:197-211, doi:10.1144/GSL.SP.1998.136.01.17 --- P. F. Worthington: Conjunctive interpretation of core and log data through association of the effective and total porosity models / Geological Society, London, Special Publications, 136:213-223, doi:10.1144/GSL.SP.1998.136.01.18 --- S. Xu and R. White: Permeability prediction in anisotropic shaly formations / Geological Society, London, Special Publications, 136:225-236, doi:10.1144/GSL.SP.1998.136.01.19 --- Integration of Core and Borehole Images --- T. M. Goodall, N. K. Møller, and T. M. Rønningsland: The integration of electrical image logs with core data for improved sedimentological interpretation / Geological Society, London, Special Publications, 136:237-248, doi:10.1144/GSL.SP.1998.136.01.20 --- D. Haller and F. Porturas: How to characterize fractures in reservoirs using borehole and core images: case studies / Geological Society, London, Special Publications, 136:249-259, doi:10.1144/GSL.SP.1998.136.01.21 --- P. D. Jackson, P. K. Harvey, M. A. Lovell, D. A. Gunn, C. G. Williams, and R. C. Flint: Measurement scale and formation heterogeneity: effects on the integration of resistivity data / Geological Society, London, Special Publications, 136:261-272, doi:10.1144/GSL.SP.1998.136.01.22 --- J C. Lofts and J. F. Bristow: Aspects of core-log integration: an approach using high resolution images / Geological Society, London, Special Publications, 136:273-283, doi:10.1144/GSL.SP.1998.136.01.23 --- C. O. Major, C. Pirmez, and D. Goldberg: High-resolution core-log integration techniques: examples from the Ocean Drilling Program / Geological Society, London, Special Publications, 136:285-295, doi:10.1144/GSL.SP.1998.136.01.24 --- Applications and Case Studies --- M. Ayadi, P. A. Pezard, C. Laverne, and G. Bronner: Multi-scalar structure at DSDP/ODP Site 504, Costa Rica Rift, I: stratigraphy of eruptive products and accretion processes / Geological Society, London, Special Publications, 136:297-310, doi:10.1144/GSL.SP.1998.136.01.25 --- M. Ayadi, P. A. Pezard, G. Bronner, P. Tartarotti, and C. Laverne: Multi-scalar structure at DSDP/ODP Site 504, Costa Rica Rift, III: faulting and fluid circulation. Constraints from integration of FMS images, geophysical logs and core data / Geological Society, London, Special Publications, 136:311-326, doi:10.1144/GSL.SP.1998.136.01.26 --- S. A. Barclay and R. H. Worden: Quartz cement volumes across oil-water contacts in oil fields from petrography and wireline logs: preliminary results from the Magnus Field, Northern North Sea / Geological Society, London, Special Publications, 136:327-339, doi:10.1144/GSL.SP.1998.136.01.27 --- T. S. Brewer, P. K. Harvey, M. A. Lovell, S. Haggas, G. Williamson, and P. Pezard: Ocean floor volcanism: constraints from the integration of core and downhole logging measurements / Geological Society, London, Special Publications, 136:341-362, doi:10.1144/GSL.SP.1998.136.01.28 --- C. J. Bücker, H. Delius, and J. Wohlenberg: Physical signature of basaltic volcanics drilled on the northeast Atlantic volcanic rifted margins / Geological Society, London, Special Publications, 136:363-374, doi:10.1144/GSL.SP.1998.136.01.29 --- C. A. Gonçalves and L. Ewert: Development of the Cote D’Ivoire-Ghana transform margin: evidence from the integration of core and wireline log data / Geological Society, London, Special Publications, 136:375-389, doi:10.1144/GSL.SP.1998.136.01.30 --- P. Tartarotti, M. Ayadi, P. A. Pezard, C. Laverne, and F. D. De Larouziere: Multi-scalar structure at DSDP/ODP Site 504, Costa Rica Rift, II: fracturing and alteration. An integrated study from core, downhole measurements and borehole wall images / Geological Society, London, Special Publications, 136:391-412, doi:10.1144/GSL.SP.1998.136.01.31

Description / Table of Contents: Peter Turner and Amanda Turner: Palaeomagnetic Applications in Hydrocarbon Exploration and Production: Introduction / Geological Society, London, Special Publications, 98:1-5, doi:10.1144/GSL.SP.1995.098.01.01 --- Magnetic Mineral Assemblages and Hydrocarbons --- Hans G. Machel: Magnetic mineral assemblages and magnetic contrasts in diagenetic environments — with implications for studies of palaeomagnetism, hydrocarbon migration and exploration / Geological Society, London, Special Publications, 98:9-29, doi:10.1144/GSL.SP.1995.098.01.02 --- Palaeomagnetic Properties of Hydrocarbon Reservoirs --- Hervé Perroud, Annick Chauvin, and Michel Rebelle: Hydrocarbon seepage dating through chemical remagnetization / Geological Society, London, Special Publications, 98:33-41, doi:10.1144/GSL.SP.1995.098.01.03 --- P. Turner, S. D. Burley, D. Rey, and J. Prosser: Burial history of the Penrith Sandstone (Lower Permian) deduced from the combined study of fluid inclusion and palaeomagnetic data / Geological Society, London, Special Publications, 98:43-78, doi:10.1144/GSL.SP.1995.098.01.04 --- Stuart A. Hall and Ian Evans: Palaeomagnetic and rock magnetic properties of hydrocarbon reservoir rocks from the Permian Basin, southeastern New Mexico, USA / Geological Society, London, Special Publications, 98:79-95, doi:10.1144/GSL.SP.1995.098.01.05 --- S. A. Johnson, P. Turner, A. Hartley, and D. Rey: Palaeomagnetic implications for the timing of hematite precipitation and remagnetization in the Carboniferous Barren Red Measures, UK southern North Sea / Geological Society, London, Special Publications, 98:97-117, doi:10.1144/GSL.SP.1995.098.01.06 --- Mark W. Hounslow, Barbara A. Maher, and Laurence Thistlewood: Magnetic mineralogy of sandstones from the Lunde Formation (late Triassic), northern North Sea, UK: origin of the palaeomagnetic signal / Geological Society, London, Special Publications, 98:119-147, doi:10.1144/GSL.SP.1995.098.01.07 --- Claus Beyer: Results from a palaeomagnetic investigation of the Brent Group sediments in wells 34/10–16 and 34/10–17 showing evidence for complete remagnetization of the sediment / Geological Society, London, Special Publications, 98:149-159, doi:10.1144/GSL.SP.1995.098.01.08 --- Magnetostratigraphic Applications --- Mark W. Hounslow, Barbara A. Maher, Laurence Thistlewood, and Kevin Dean: Magnetostratigraphic correlations in two cores from the late Triassic Lunde Formation, Beryl Field, northern North Sea, UK / Geological Society, London, Special Publications, 98:163-172, doi:10.1144/GSL.SP.1995.098.01.09 --- Kifaya N. Belkaaloul, Djafar M. Aissaoui, Michel Rebelle, and Gerard Sambet: Magnetostratigraphic correlations of the Jurassic carbonates from the Paris Basin: implications for petroleum exploration / Geological Society, London, Special Publications, 98:173-186, doi:10.1144/GSL.SP.1995.098.01.10 --- Eirik Hauger and Paul Van Veen: Application of magnetostratigraphy to Brent Group reservoir zonation in the Visund Field / Geological Society, London, Special Publications, 98:187-204, doi:10.1144/GSL.SP.1995.098.01.11 --- Gillian M. Turner and Ian D. Bryant: Application of a palaeomagnetic reversal stratigraphy to constrain well correlation and sequence stratigraphic interpretation of the Eocene C1 Sands, Maui Field, New Zealand / Geological Society, London, Special Publications, 98:205-221, doi:10.1144/GSL.SP.1995.098.01.12 --- R. Thompson and T. D. J. Cameron: Palaeomagnetic study of Cenozoic sediments in North Sea boreholes: an example of a magnetostratigraphic conundrum in a hydrocarbonproducing area / Geological Society, London, Special Publications, 98:223-236, doi:10.1144/GSL.SP.1995.098.01.13 --- Core Orientation and Susceptibility Logging --- T. C. Rolph, J. Shaw, T. R. Harper, and J. T. Hagan: Viscous remanent magnetization: a tool for orientation of drill cores / Geological Society, London, Special Publications, 98:239-243, doi:10.1144/GSL.SP.1995.098.01.14 --- E. A. Hailwood and F. Ding: Palaeomagnetic reorientation of cores and the magnetic fabric of hydrocarbon reservoir sands / Geological Society, London, Special Publications, 98:245-258, doi:10.1144/GSL.SP.1995.098.01.15 --- Reidar Løvlie and Paul Van Veen: Magnetic susceptibility of a 180 m sediment core: reliability of incremental sampling and evidence for a relationship between susceptibility and gamma activity / Geological Society, London, Special Publications, 98:259-266, doi:10.1144/GSL.SP.1995.098.01.16 --- H. Shi and D. H. Tarling: Magnetic field of a core barrel / Geological Society, London, Special Publications, 98:267-272, doi:10.1144/GSL.SP.1995.098.01.17 --- D. H. Tarling and H. Shi: Magnetic anisotropy of borehole core samples / Geological Society, London, Special Publications, 98:273-280, doi:10.1144/GSL.SP.1995.098.01.18 --- Structural Applications --- S. A. Stewart and K. C. Jackson: Palaeomagnetic analysis of fold closure growth and volumetrics / Geological Society, London, Special Publications, 98:283-295, doi:10.1144/GSL.SP.1995.098.01.19

Description / Table of Contents: Geodynamics concerns with the dynamics of the global motion of the earth, of the motion in the earth's interior and its interaction with surface features, together with the mechanical processes in the deformation and rupture of geological structures. Its final object is to determine the driving mechanism of these motions which is highly interdisciplinary. In preparing the basic geological, geophysical data required for a comprehensive mechanical analysis, there are also many mechanical problems involved, which means the problem is coupled in a complicated manner with geophysics, rock mechanics, seismology, structural geology etc. This topical issue is Part I of the Proceedings of an IUTAM / IASPEI Symposium on Mechanics Problems in Geodynamics held in Beijing, September 1994. It addresses different aspects of mechanics problems in geodynamics involving tectonic analyses, lithospheric structures, rheology and the fracture of earth media, mantle flow, either globally or regionally, and either by forward or inverse analyses or numerical simulation.

Description / Table of Contents: Geodynamics concerns the dynamics of the earth's global motion, of the earth's interior motion and its interaction with surface features, together with the mechanical processes in the deformation and rupture of geological structures. Its final object is to determine the driving mechanism of these motions. It is highly interdisciplinary. In providing the basic geological, geophysical infromation required for a comprehensive mechanical analysis, there are also many mechanical problems involved, which means the problem is coupled intricately with geophysics, rock mechanics, seismology, structural geology, etc. This is Part II of the Proceedings of an IUTAM/IASPEI Symposium on Mechanics Problems in Geodynamics held in Beijing, September 1994. It discusses different aspects of mechanics problems in geodynamics involving the earth's rotation, tectonic analyses of various parts of the world, mineral physics and flow in the mantle, seismic source studies and wave propagation and application of the DDA method in tectonic analysis.

Description / Table of Contents: Induced seismic events are of high scientific and economic significance. They are the result of human activities interacting with regional and local tectonics, changing the local crustal stress state by mining, extraction of rock masses, injection of fluids into the rock massif, and by changing the surface loading and pore pressure state near large reservoirs. Within Europe the study of induced seismic events has a long tradition and international scientific organizations have actively stimulated the co-operation in this field. During its General Assembly in September 1994, the European Seismological Society organized the symposium "Induced Seismic Events". The focus of this symposium was concentrated on induced events in central and eastern Europe, as well as in the former Soviet Union. The major contributions to the symposium, and also some Chinese, Canadian, and South African results are presented here. Case studies as well as data analyses and methodological studies are included. Seismologists and specialists working in the field of geohazard prevention will find much information in this volume that is pertinent to their work.

Description / Table of Contents: R. W. Jones and M. D. Simmons: Preface and Introduction / Geological Society, London, Special Publications, 152:1-3, doi:10.1144/GSL.SP.1999.152.01.01 --- S. N. J. Payne, D. F. Ewen, and M. J. Bowman: The role and value of ‘high-impact biostratigraphy’ in reservoir appraisal and development / Geological Society, London, Special Publications, 152:5-22, doi:10.1144/GSL.SP.1999.152.01.02 --- S. Duxbury, D. Kadolsky, and S. Johansen: Sequence stratigraphic subdivision of the Humber Group in the Outer Moray Firth area (UKCS, North Sea) / Geological Society, London, Special Publications, 152:23-54, doi:10.1144/GSL.SP.1999.152.01.03 --- P. H. Morris, S. N. J. Payne, and D. P. J. Richards: Micropalaeontological biostratigraphy of the Magnus Sandstone Member (Kimmeridgian-Early Volgian), Magnus Field, UK North Sea / Geological Society, London, Special Publications, 152:55-73, doi:10.1144/GSL.SP.1999.152.01.04 --- D. J. Shipp: Well-site biostratigraphy of Danish horizontal wells / Geological Society, London, Special Publications, 152:75-84, doi:10.1144/GSL.SP.1999.152.01.05 --- J. A. Bergen and P. J. Sikora: Microfossil diachronism in southern Norwegian North Sea chalks: Valhall and Hod fields / Geological Society, London, Special Publications, 152:85-111, doi:10.1144/GSL.SP.1999.152.01.06 --- P. J. Sikora, J. A. Bergen, and C. L. Farmer: Chalk palaeoenvironments and depositional model, Valhall-Hod fields, southern Norwegian North Sea / Geological Society, London, Special Publications, 152:113-137, doi:10.1144/GSL.SP.1999.152.01.07 --- M. D. Bidgood, A. G. Mitlehner, G. D. Jones, and D. J. Jutson: Towards a stable and agreed nomenclature for North Sea Tertiary diatom floras — the ‘Coscinodiscus’ problem / Geological Society, London, Special Publications, 152:139-153, doi:10.1144/GSL.SP.1999.152.01.08 --- N. A. Holmes: The Andrew Formation and ‘biosteering’ — different reservoirs, different approaches / Geological Society, London, Special Publications, 152:155-166, doi:10.1144/GSL.SP.1999.152.01.09 --- G. Mangerud, T. Dreyer, L. Søyseth, O. Martinsen, and A. Ryseth: High-resolution biostratigraphy and sequence development of the Palaeocene succession, Grane Field, Norway / Geological Society, London, Special Publications, 152:167-184, doi:10.1144/GSL.SP.1999.152.01.10 --- R. W. Jones: Forties Field (North Sea) revisited: a demonstration of the value of historical micropalaeontological data / Geological Society, London, Special Publications, 152:185-200, doi:10.1144/GSL.SP.1999.152.01.11 --- D. McLean and S. J. Davies: Constraints on the application of palynology to the correlation of Euramerican Late Carboniferous clastic hydrocarbon reservoirs / Geological Society, London, Special Publications, 152:201-218, doi:10.1144/GSL.SP.1999.152.01.12 --- M. D. Simmons, M. D. Bidgood, P. Brenac, P. D. Crevello, J. J. Lambiase, and C. K. Morley: Microfossil assemblages as proxies for precise palaeoenvironmental determination — an example from Miocene sediments of northwest Borneo / Geological Society, London, Special Publications, 152:219-241, doi:10.1144/GSL.SP.1999.152.01.13 --- R. W. Jones, N. E. Jones, A. D. King, and D. Shaw: Reservoir biostratigraphy of the Pedernales Field, Venezuela / Geological Society, London, Special Publications, 152:243-257, doi:10.1144/GSL.SP.1999.152.01.14 --- J. M. Armentrout, L. B. Fearn, K. Rodgers, S. Root, W. D. Lyle, D. C. Herrick, R. B. Bloch, J. W. Snedden, and B. Nwankwo: High-resolution sequence biostratigraphy of a lowstand prograding deltaic wedge: Oso Field (late Miocene), Nigeria / Geological Society, London, Special Publications, 152:259-290, doi:10.1144/GSL.SP.1999.152.01.15 --- C. J. Van Der Zwan and W. A. Brugman: Biosignals from the EA Field, Nigeria / Geological Society, London, Special Publications, 152:291-301, doi:10.1144/GSL.SP.1999.152.01.16 --- B. J. O’Neill, A. E. DuVernay, and R. A. George: Applied palaeontology: a critical stratigraphic tool in Gulf of Mexico exploration and exploitation / Geological Society, London, Special Publications, 152:303-308, doi:10.1144/GSL.SP.1999.152.01.17