ALBERT

Description / Table of Contents: PREFACE The aim of this volume is two-fold. At the more pragmatic level, it is to help answer the many questions about the structure of the Pacific continental margin of North America, which have arisen over the years as a result of continuing field mapping and geophysical surveys. The second objective is methodological - to illustrate the irreplaceable role of geological information among the various data sets used in earth-science studies. The need to address these issues became apparent to the author during the several years he spent taking part in geological and geophysical studies on the west coast of Canada. All too often, results of geologic field mapping disagreed with tectonic predictions from too-straightforward local applications of global plate reconstructions, which due to their generality do not always take a full account of specific character of particular regions. To be sure, the global approach has during the last q~/artercentury greatly expanded the vision of geoscientists, previously restricted to continental regions. However, a negative by-product of this expansion has been a decline of attention paid to local information, as tectonic studies have increasingly relied on simply fitting the development of a particular region into this or that prefabricated tectonic template. Direct geological observations have limitations of their own. The observer in most cases deals with products of geologic processes, rather than with the processes themselves. Field mapping provides local information, and many years of effort are needed before a regional overview becomes possible. Geologic mapping is restricted to the ground surface, and even the deepest drillholes cannot sample more than the outermost shell of the Earth. The factual side of geologic mapping is usually limited to determination of rock types and their relationships in areas of exposure. Conclusions about the three-dimensional structure of a region and its evolution are still mostly inferential. Broad incorporation into geological studies of geophysical data, assisted by ever-more-sophisticated modern computers, provides a huge volume of information unobtainable in other ways. Geophysical methods quickly afford regional coverage or images of the Earth's deep interior. Geophysical methods have prompted the application in geological sciences of methodologies borrowed from exact sciences, such as mathematics and physics. Particularly important has been quantitative modeling, which allows a scientist to use the known parameters of a system to predict others. But in taking this approach too far, one encounters a dangerous pitfall. A model is a simplified representation of a natural phenomenon. The quality of this or that representation is relative, and a representation is never perfect. To incorporate all characteristics of a geologic phenomenon, in a parametrized form, into a numerical or physical imitation is impossible. This requires one to rely on simplifying assumptions, and a model is no better than the assumptions at its base. Unrealistic assumptions lead to unrealistic models. When a disagreement arises between model predictions and observations - such as those from geologic field mapping - a modeler may be tempted to downplay the differences or the significance of the offending observations. It becomes tempting to underestimate the role of an experienced geologist as a principal arbiter of the realism of a model. But it is geological data and geological control that provide the ultimate means of testing abstract models. From this methodological position, the present study of the western North American continental margin is organized as follows: 1. Geological information, available from field mapping and drilling, is gathered and summarized. 2. Current geophysical models for this region are considered, with particular attention to their underlying assumptions. 3. The available data, geological and geophysical, are synthesized into an internally consistent geologic-evolution concept. 4. This concept is tested by comparison with direct geological observations from field mapping and drilling. Because most current data sets and models cover northwestern Washington and western British Columbia, particular attention was paid to these areas. Fortunately, these areas contain many keys that help understand the structure of the entire western North American continental margin, which has baffled scientists for decades. The author does not claim to have resolved all these problems, but he does believe he has made a useful contribution to understanding continental-oceanic plate interrelations at this continental margin. Rigidity of lithospheric plates is a critical assumption in current models of plate evolution. The lithophere of a plate is created at spreading centers manifested in the global system of mid-ocean ridges. It moves away from the place of its birth towards boundaries with other plates, with which it can interact in a variety of ways. Some interactions are of strike-slip type, with two plates simply sliding past each other. However, to compensate for the creation of new lithosphere at spreading centers, older lithosphere at some plate boundaries descends into the mantle as it is overriden by other plates. At such plate boundaries lie subduction zones. If both regimes occur along a single plate boundary, the transition between them must be abrupt. Unless it can be tied to a change in orientation of the boundary, it must be associated with a junction of not two, but three different plates. Such a template was used to interpret the structure and tectonic evolution of the western North American continental margin in the late 1960s and thereafter (Atwater, 1970; McManus et al., 1972; Barr and Chase, 1974; Riddihough and Hyndman, 1976). To satisfy the principles of rigid-plate tectonics, both regimes have to exist along this continental margin. Also needed in rigid-plate reconstructions is a plate triple junction somewhere between the areas of proven ongoing subduction (in Oregon and southern Washington) and transform plate motion (along the southeastern Alaska margin; Atwater, 1970; McManus et al., 1972). Such a triple junction has been placed off Queen Charlotte Sound offshore British Columbia (Keen and Hyndman, 1979; Riddihough et al., 1983), where a spreading center has been postulated between the Pacific and Explorer oceanic plates (Hyndman et al. 1979; Riddihough, 1984). Off northern Vancouver Island, a transform boundary between the Explorer and Juan de Fuca oceanic plates has been postulated, but both these plates are assumed to be subducting beneath Vancouver Island (Hyndman et al., 1979; Riddihough and Hyndman, 1989)o With the assumed universality of the rigid-plate model, "broad similarity" has been suggested between the geology of western Oregon and that of western British Columbia, and the Cascadia zone of active subduction has been extended as far north as the mouth of Queen Charlotte Sound (Riddihough, 1979, 1984). An accretionary sedimentary prism (Yorath, 1980) - or even an accretionary complex containing several exotic "terranes" (Davis and Hyndman, 1989) - has been postulated off Vancouver Island. Geological observations onshore and offshore (Shouldice, 1971; Tiffin et al., 1972) have come to be considered too "surficial" to be of major consequence for large-scale tectonic modeling (Yorath et al., 1985a,b; Yorath, 1987). Variants of the principal geophysical model for this area during the last decade (Clowes et al., 1987; Hyndman et alo, 1990; Spence et al. 1991; Yuan et al., 1992; Dehler and Clowes, 1992) have become increasingly distant from geological observations. As new model variants emerged, they were checked for internal consistency, compatibility with neighboring local models and fidelity to the overall assumed tectonic picture. However, detailed geological work continued, and many of its results proved incompatible with the conventional wisdom (Gehrels, 1990; Babcock et al., 1992, 1994; Allan et al., 1993; Lyatsky, 1993a). Importantly, questions arose about the applicability in this region of the conventional, simple rigid-plate assumption, as it was shown to be unable to account for all the geological and geophysical peculiarities in some areas (Carbotte et al., 1989; Allan et al., 1993; Davis and Currie, 1993). New solutions were made necessary by new findings and by rediscovery of forgotten old data (see Lyatsky et al., 1991; Lyatsky, 1993b). Without aiming to resolve all the outstanding debates, tectonic implications of the geologic mapping and drilling results in this region are considered in the following chapters. These results are integrated with geochemical and geophysical data. Interpretations of these data, made by this author and by other workers, are verified by geological observations and by geologically plausible extrapolations from these observations. In searching for solutions consistent with all the information, the author has restricted himself to analyzing continental-crust structures along this continental margin. He believes, however, that future models for the offshore regions of the northeastern Pacific should consider the results obtained herein.

Description / Table of Contents: PREFACE The ocean has always been reluctant to reveal its secrets. Its size and the inaccessibility of its deeper regions have made their safeguard a reasonably simple matter with the result that significant misconceptions persisted for many years. Two of the most widespread of these concerned the featureless nature of the sea floor and the silence of the deep ocean. Underwater acoustics has played a key role in discrediting both and in so doing introduced new and exciting developments in oceanography and geophysics. In the years following World War II, echosounders and subbottom profilers based on new active sonar technology, revealed the true nature of the seafloor topography and led to the major advances represented by plate tectonics. Research driven by the requirements of passive sonar, on the other hand, was to demonstrate that the sea was not silent but was characterised by a complex noise spectrum. Many individual mechanisms and sources ranging from man-made, biological and geophysical activity to the intrinsic noise of the sea itself were found to contribute to this spectrum. A major component, which is the subject of this book, was to remain unrecognised to underwater acoustics until noise measurements could be made effectively at very low frequencies, although its presence had been indicated by seismology long before these measurements were possible. By virtue of its geographical isolation in the Southern Ocean, New Zealand has provided an ideal environment for long-range propagation and ambient noise investigations and numerous studies have been reported. Our interest in the subject of this book was aroused initially in the course of one such experiment in 1966. For the first time it had been possible to extend the recording bandwidth to 1 Hz and the improved performance of this new system was anticipated eagerly. However the main purpose of the experiment was nearly aborted by the appearance of a new and unsuspected noise component at frequencies below 10 Hz. Due primarily to technical limitations in the equipment then available, a subsequent programme, designed to identify the properties and origin of the source more clearly, was not productive and was soon abandoned. An opportunity to revisit the problem arose some 10 years later, when the University of Auckland became involved in a major environmental study in support of the development of an offshore gas field in Cook Strait. The technology then available provided an opportunity to examine afresh the relationship between sea state and the seismo-acoustic response generated. An initial trim demonstrated the potential of the site. Accordingly a long-term programme, involving the parallel measurement of the oceanwave field and acoustic response, was undertaken in a series of student research theses. The data so gathered were of sufficiently high quality to ultimately establish wave-wave interactions as the source of the acoustic effects observed and to identify many of its characteristics. This result was soon to be confirmed by other studies. As the noise data accumulated, however, it became apparent that certain refinements to the theories describing the mechanism were required. Our attempts to provide these refinements have been reported in a number of contributions in recent years. The accounts of these and similar contributions by others have unfortunately appeared in the literature in a somewhat disjointed manner, with the result that the evolution of the subject has not been easy to follow. This book attempts to present a more coherent account of the subject and its development. Most of the early experimental and theoretical results from our group have arisen from two key Ph.D. theses, due to Dr. K.C. Ewans and Dr. C.Y. Wu. The painstaking and careful instrumentation development and data analysis provided by Dr. Ewans were critical to the definitive correlation which we were able to establish between wind field, seastate and the acoustic response so generated. Dr. Wu's thesis presented the first phase of our attempt at the resolution of certain key theoretical issues, which were identified in the course of the experimental programme. Both studies owe much to the support of Shell BP Todd Oil Services Ltd., acting for Maui Development Ltd., and to the University of Auckland. The support of the Electricity Corporation of New Zealand Ltd. during a later experimental investigation of the Southern Ocean wave field is also acknowledged...

Description / Table of Contents: The special issue contains contributions presented at the international workshop Seismic waves in laterally inhomo- geneous media IV, which was held at the Castle of Trest, Czech Republic, May 22-27, 1995. The workshop, which was attended by about 100 seismologists from more than 10 countries, was devoted mainly to the current state of theoretical and computational means of study of seismic wave propagation in complex structures. The special issue can be of interest for theoretical, global and explorational seismologists. The first part contains papers dealing with the study and the use of various methods of solving forward and inverse problems in complicated structures. Among other methods, discrete-wave number method, the finite-difference method, the edge-wave supperposition method and the ray method are studied and used. Most papers contained in the second part are related to the ray method. The most important topics are two-point ray tracing, grid calculations of travel times and amplitudes and seismic wave propagation in anisotropic media.

Description / Table of Contents: Stratigraphy and Sedimentary Geology of Siliciclastic Shelves --- O. Michelsen and M. Danielsen: Sequence and systems tract interpretation of the epicontinental Oligocene deposits in the Danish North Sea / Geological Society, London, Special Publications, 117:1-13, doi:10.1144/GSL.SP.1996.117.01.01 --- P. B. Konradi: Foraminiferal biostratigraphy of the post-mid-Miocene in the Danish Central Trough, North Sea / Geological Society, London, Special Publications, 117:15-22, doi:10.1144/GSL.SP.1996.117.01.02 --- P. Jacobs and M. De Batist: Sequence stratigraphy and architecture on a ramp-type continental shelf: the Belgian Palaeogene / Geological Society, London, Special Publications, 117:23-48, doi:10.1144/GSL.SP.1996.117.01.03 --- D. Mellere and R. J. Steel: Tidal sedimentation in Inner Hebrides half grabens, Scotland: the Mid-Jurassic Bearreraig Sandstone Formation / Geological Society, London, Special Publications, 117:49-79, doi:10.1144/GSL.SP.1996.117.01.04 --- L. A. Spalletti: Estuarine and shallow-marine sedimentation in the Upper Cretaceous-Lower Tertiary west-central Patagonian Basin (Argentina) / Geological Society, London, Special Publications, 117:81-93, doi:10.1144/GSL.SP.1996.117.01.05 --- Modern siliciclastic Shelves: Architecture, Sea Level, Tectonics and Sediment Supply --- J. B. Anderson, K. Abdulah, S. Sarzalejo, F. Siringan, and M. A. Thomas: Late Quaternary sedimentation and high-resolution sequence stratigraphy of the east Texas shelf / Geological Society, London, Special Publications, 117:95-124, doi:10.1144/GSL.SP.1996.117.01.06 --- G. Ercilla and B. Alonso: Quaternary siliciclastic sequence stratigraphy of western Mediterranean passive and tectonically active margins: the role of global versus local controlling factors / Geological Society, London, Special Publications, 117:125-137, doi:10.1144/GSL.SP.1996.117.01.07 --- F. J. Hernández-Molina, L. Somoza, and J. Rey: Late Pleistocene-Holocene high-resolution sequence analysis on the Alboran Sea continental shelf / Geological Society, London, Special Publications, 117:139-154, doi:10.1144/GSL.SP.1996.117.01.08 --- A. Correggiari, M. E. Field, and F. Trincardi: Late Quaternary transgressive large dunes on the sediment-starved Adriatic shelf / Geological Society, London, Special Publications, 117:155-169, doi:10.1144/GSL.SP.1996.117.01.09 --- P. J. Bart and J. B. Anderson: Seismic expression of depositional sequences associated with expansion and contraction of ice sheets on the northwestern Antarctic Peninsula continental shelf / Geological Society, London, Special Publications, 117:171-186, doi:10.1144/GSL.SP.1996.117.01.10 --- H. P. Sejrup, E. L. King, I. Aarseth, H. Haflidason, and A. Elverhøi: Quaternary erosion and depositional processes: western Norwegian fjords, Norwegian Channel and North Sea Fan / Geological Society, London, Special Publications, 117:187-202, doi:10.1144/GSL.SP.1996.117.01.11 --- G. Lericolais, P. Guennoc, J.-P. Auffret, J.-F. Bourillet, and S. Berne: Detailed survey of the western end of the Hurd Deep (English Channel): new facts for a tectonic origin / Geological Society, London, Special Publications, 117:203-215, doi:10.1144/GSL.SP.1996.117.01.12 --- Nearshore and Coastal Environments --- J. M. L. Dominguez: The São Francisco strandplain: a paradigm for wave-dominated deltas? / Geological Society, London, Special Publications, 117:217-231, doi:10.1144/GSL.SP.1996.117.01.13 --- J. V. Barrie and K. W. Conway: Evolution of a nearshore and coastal macrotidal sand transport system, Queen Charlotte Islands, Canada / Geological Society, London, Special Publications, 117:233-247, doi:10.1144/GSL.SP.1996.117.01.14 --- W. J. Cleary, S. R. Riggs, D. C. Marcy, and S. W. Snyder: The influence of inherited geological framework upon a hardbottom-dominated shoreface on a high-energy shelf: Onslow Bay, North Carolina, USA / Geological Society, London, Special Publications, 117:249-266, doi:10.1144/GSL.SP.1996.117.01.15 --- V. Eitner, R. Kaiser, H. D. Niemeyer, and V. Eitner: Nearshore sediment transport processes due to moderate hydrodynamic conditions / Geological Society, London, Special Publications, 117:267-288, doi:10.1144/GSL.SP.1996.117.01.16 --- New Techniques in Continental Shelf Research --- R. J. De Meijer, I. C. Tánczos, and C. Stapel: Radiometry as a technique for use in coastal research / Geological Society, London, Special Publications, 117:289-297, doi:10.1144/GSL.SP.1996.117.01.17 --- T. Missiaen, T. M. McGee, D. Pearks, G. Ollier, and F. Theilen: An interdisciplinary approach to the evaluation of physical parameters of shallow marine sediments / Geological Society, London, Special Publications, 117:299-322, doi:10.1144/GSL.SP.1996.117.01.18 --- A. M. Davis: Geophysics in offshore site investigation: a review of the state of the art / Geological Society, London, Special Publications, 117:323-338, doi:10.1144/GSL.SP.1996.117.01.19

Description / Table of Contents: C. F. Mills: Geochemical aspects of the aetiology of trace element related diseases / Geological Society, London, Special Publications, 113:1-5, doi:10.1144/GSL.SP.1996.113.01.01 --- J. A. Plant, J. W. Baldock, and B. Smith: The role of geochemistry in environmental and epidemiological studies in developing countries: a review / Geological Society, London, Special Publications, 113:7-22, doi:10.1144/GSL.SP.1996.113.01.02 --- F. M. Fordyce, D. Masara, and J. D. Appleton: Stream sediment, soil and forage chemistry as indicators of cattle mineral status in northeast Zimbabwe / Geological Society, London, Special Publications, 113:23-37, doi:10.1144/GSL.SP.1996.113.01.03 --- I. O. Jumba, N. F. Suttle, E. A. Hunter, and S. O. Wandiga: Effects of botanical composition, soil origin and composition on mineral concentrations in dry season pastures in western Kenya / Geological Society, London, Special Publications, 113:39-45, doi:10.1144/GSL.SP.1996.113.01.04 --- John Maskall and Iain Thornton: The distribution of trace and major elements in Kenyan soil profiles and implications for wildlife nutrition / Geological Society, London, Special Publications, 113:47-62, doi:10.1144/GSL.SP.1996.113.01.05 --- R. J. Bowell, A. Warren, and I. Redmond: Formation of cave salts and utilization by elephants in the Mount Elgon region, Kenya / Geological Society, London, Special Publications, 113:63-79, doi:10.1144/GSL.SP.1996.113.01.06 --- O. Selinus, A. Frank, and V. Galgan: Biogeochemistry and metal biology / Geological Society, London, Special Publications, 113:81-89, doi:10.1144/GSL.SP.1996.113.01.07 --- W. M. Edmunds and P. L. Smedley: Groundwater geochemistry and health: an overview / Geological Society, London, Special Publications, 113:91-105, doi:10.1144/GSL.SP.1996.113.01.08 --- R. J. Bowell, S. McEldowney, A. Warren, B. Mathew, and M. Bwankuzo: Biogeochemical factors affecting groundwater quality in central Tanzania / Geological Society, London, Special Publications, 113:107-130, doi:10.1144/GSL.SP.1996.113.01.09 --- C. B. Dissanayake: Water quality and dental health in the Dry Zone of Sri Lanka / Geological Society, London, Special Publications, 113:131-140, doi:10.1144/GSL.SP.1996.113.01.10 --- B. Smith, N. Breward, M. B. Crawford, D. Galimaka, S. M. Mushiri, and S. Reeder: The environmental geochemistry of aluminium in tropical terrains and its implications to health / Geological Society, London, Special Publications, 113:141-152, doi:10.1144/GSL.SP.1996.113.01.11 --- Iain Thornton: Sources and pathways of arsenic in the geochemical environment: health implications / Geological Society, London, Special Publications, 113:153-161, doi:10.1144/GSL.SP.1996.113.01.12 --- P. L. Smedley, W. M. Edmunds, and K. B. Pelig-Ba: Mobility of arsenic in groundwater in the Obuasi gold-mining area of Ghana: some implications for human health / Geological Society, London, Special Publications, 113:163-181, doi:10.1144/GSL.SP.1996.113.01.13 --- E. Helios Rybicka: Environmental impact of mining and smelting industries in Poland / Geological Society, London, Special Publications, 113:183-193, doi:10.1144/GSL.SP.1996.113.01.14 --- Keith Nicholson: Lacustrine sediment geochemistry as a tool in retrospective environmental impact assessment of mining and urban development in tropical environments: examples from Papua New Guinea / Geological Society, London, Special Publications, 113:195-199, doi:10.1144/GSL.SP.1996.113.01.15 --- Ron Fuge: Geochemistry of iodine in relation to iodine deficiency diseases / Geological Society, London, Special Publications, 113:201-211, doi:10.1144/GSL.SP.1996.113.01.16 --- C. B. Dissanayake and R. L. R. Chandrajith: Iodine in the environment and endemic goitre in Sri Lanka / Geological Society, London, Special Publications, 113:213-221, doi:10.1144/GSL.SP.1996.113.01.17 --- A. G. Stewart and P. O. D. Pharoah: Clinical and epidemiological correlates of iodine deficiency disorders / Geological Society, London, Special Publications, 113:223-230, doi:10.1144/GSL.SP.1996.113.01.18 --- M. G. Nair, S. M. Maxwell, and B. J. Brabin: The protective role of trace elements in preventing aflatoxin induced damage: a review / Geological Society, London, Special Publications, 113:231-237, doi:10.1144/GSL.SP.1996.113.01.19 --- R. A. Nicholson, P. D. Roberts, and P. J. Baxter: Preliminary studies of acid and gas contamination at Poas volcano, Costa Rica / Geological Society, London, Special Publications, 113:239-244, doi:10.1144/GSL.SP.1996.113.01.20 --- M. A. Oliver: Kriging: a method of estimation for environmental and rare disease data / Geological Society, London, Special Publications, 113:245-254, doi:10.1144/GSL.SP.1996.113.01.21 --- R. Harvey, J. J. Powell, and R. P. H. Thompson: A review of the geochemical factors linked to podoconiosis / Geological Society, London, Special Publications, 113:255-260, doi:10.1144/GSL.SP.1996.113.01.22

Description / Table of Contents: Coalbed Methane Resources in USA and Europe --- D. Keith Murray: Coalbed methane in the USA: analogues for worldwide development / Geological Society, London, Special Publications, 109:1-12, doi:10.1144/GSL.SP.1996.109.01.01 --- Thomas G. Fails: Coalbed methane potential of some Variscan foredeep basins / Geological Society, London, Special Publications, 109:13-26, doi:10.1144/GSL.SP.1996.109.01.02 --- F. J. MacCarthy, R. M. Tisdale, and W. B. Ayers, Jr: Geological controls on coalbed prospectivity in part of the North Staffordshire Coalfield, UK / Geological Society, London, Special Publications, 109:27-42, doi:10.1144/GSL.SP.1996.109.01.03 --- J. L. Knight, B. J. Shevlin, D. C. Edgar, and P. Dolan: Coal thickness distributions on the UK continental shelf / Geological Society, London, Special Publications, 109:43-57, doi:10.1144/GSL.SP.1996.109.01.04 --- Dierk Juch: Assessment of West German hardcoal resources and its relation to coalbed methane / Geological Society, London, Special Publications, 109:59-65, doi:10.1144/GSL.SP.1996.109.01.05 --- U. Freudenberg, S. Lou, R. Schlüter, K. Schütz, and K. Thomas: Main factors controlling coalbed methane distribution in the Ruhr District, Germany / Geological Society, London, Special Publications, 109:67-88, doi:10.1144/GSL.SP.1996.109.01.06 --- James S. Marshall, Raymond C. Pilcher, and Carol J. Bibler: Opportunities for the development and utilization of coalbed methane in three coal basins in Russia and Ukraine / Geological Society, London, Special Publications, 109:89-101, doi:10.1144/GSL.SP.1996.109.01.07 --- Coal as a Reservoir --- R. A. Gayer, J. Pešek, I. Sýkorová, and P. Valterová: Coal clasts in the upper Westphalian sequence of the South Wales coal basin: implications for the timing of maturation and fracture permeability / Geological Society, London, Special Publications, 109:103-120, doi:10.1144/GSL.SP.1996.109.01.08 --- T. M. Hathaway and R. A. Gayer: Thrust-related permeability in the South Wales Coalfield / Geological Society, London, Special Publications, 109:121-132, doi:10.1144/GSL.SP.1996.109.01.09 --- C. I. Pattison, C. R. Fielding, R. H. McWatters, and L. H. Hamilton: Nature and origin of fractures in Permian coals from the Bowen Basin, Queensland, Australia / Geological Society, London, Special Publications, 109:133-150, doi:10.1144/GSL.SP.1996.109.01.10 --- Basim S. M. Faraj, Chris R. Fielding, and Ian D. R. Mackinnon: Cleat mineralization of Upper Permian Baralaba/Rangal Coal Measures, Bowen Basin, Australia / Geological Society, London, Special Publications, 109:151-164, doi:10.1144/GSL.SP.1996.109.01.11 --- Paul Gamson, Basil Beamish, and David Johnson: Coal microstructure and secondary mineralization: their effect on methane recovery / Geological Society, London, Special Publications, 109:165-179, doi:10.1144/GSL.SP.1996.109.01.12 --- Ian H. Harris, Gareth A. Davies, Rodney A. Gayer, and Keith Williams: Enhanced methane desorption characteristics from South Wales anthracites affected by tectonically induced fracture sets / Geological Society, London, Special Publications, 109:181-196, doi:10.1144/GSL.SP.1996.109.01.13 --- Jeffrey R. Levine: Model study of the influence of matrix shrinkage on absolute permeability of coal bed reservoirs / Geological Society, London, Special Publications, 109:197-212, doi:10.1144/GSL.SP.1996.109.01.14 --- M. I. Davidson, R. Bryant, and D. J. A. Williams: Characterization of anthracite / Geological Society, London, Special Publications, 109:213-225, doi:10.1144/GSL.SP.1996.109.01.15 --- Pavel Konečhný and Alena Kožušníková: Measurement of gas permeability of coal and clastic sedimentary rocks under triaxial stress conditions / Geological Society, London, Special Publications, 109:227-229, doi:10.1144/GSL.SP.1996.109.01.16 --- A. Kožušníková: Relationship between the hydrogen content of coal and the lithological characteristics of rocks overlying the coal seam / Geological Society, London, Special Publications, 109:231-236, doi:10.1144/GSL.SP.1996.109.01.17 --- Coal Geological Studies Related to Coalbed Methane --- Edward Lester, Martin Allen, Michael Cloke, and Brian Atkin: Analysis of the problems associated with the use of image analysis for microlithotype analysis on solid coal mounts / Geological Society, London, Special Publications, 109:237-248, doi:10.1144/GSL.SP.1996.109.01.18 --- I. Sýkorová, M. Novotná, H. Pavlíková, and V. Machovič: Petrological and spectroscopic structural characteristics of Bohemian and Moravian coals and their possible relation to gas proneness / Geological Society, London, Special Publications, 109:249-260, doi:10.1144/GSL.SP.1996.109.01.19 --- Grzegorz J. Nowak: Petrological coal seam accumulation model for the Zacler Formation of the Lower Silesian coal basin, southwestern Poland / Geological Society, London, Special Publications, 109:261-286, doi:10.1144/GSL.SP.1996.109.01.20 --- J. Barraza, A. Gilfillan, M. Cloke, and D. Clift: Minerals and major elements in density-separated coal fractions from Point of Ayr coal, Wales, UK / Geological Society, London, Special Publications, 109:287-299, doi:10.1144/GSL.SP.1996.109.01.21 --- Irena Kostova, Ognyan Petrov, and Jordan Kortenski: Mineralogy, geochemistry and pyrite content of Bulgarian subbituminous coals, Pernik Basin / Geological Society, London, Special Publications, 109:301-314, doi:10.1144/GSL.SP.1996.109.01.22 --- Duncan McLean and Iain Murray: Subsurface correlation of Carboniferous coal seams and inter-seam sediments using palynology: application to exploration for coalbed methane / Geological Society, London, Special Publications, 109:315-324, doi:10.1144/GSL.SP.1996.109.01.23 --- A. I. Karayigit, E. Eris, and E. Cicioglu: Coal geology, chemical and petrographical characteristics, and implications for coalbed methane development of subbituminous coals from the Sorgun and Suluova Eocene basins, Turkey / Geological Society, London, Special Publications, 109:325-338, doi:10.1144/GSL.SP.1996.109.01.24

Description / Table of Contents: Stephen P. Hesselbo and D. Neil Parkinson: Sequence stratigraphy in British geology / Geological Society, London, Special Publications, 103:1-7, doi:10.1144/GSL.SP.1996.103.01.01 --- Non-Marine and Paralic Sequences --- P. M. Burgess and P. A. Allen: A forward-modelling analysis of the controls on sequence stratigraphical geometries / Geological Society, London, Special Publications, 103:9-24, doi:10.1144/GSL.SP.1996.103.01.02 --- M. R. Leeder and M. D. Stewart: Fluvial incision and sequence stratigraphy: alluvial responses to relative sea-level fall and their detection in the geological record / Geological Society, London, Special Publications, 103:25-39, doi:10.1144/GSL.SP.1996.103.01.03 --- J. P. Wonham and T. Elliott: High-resolution sequence stratigraphy of a mid-Cretaceous estuarine complex: the Woburn Sands of the Leighton Buzzard area, southern England / Geological Society, London, Special Publications, 103:41-62, doi:10.1144/GSL.SP.1996.103.01.04 --- V. P. Wright: Use of palaeosols in sequence stratigraphy of peritidal carbonates / Geological Society, London, Special Publications, 103:63-74, doi:10.1144/GSL.SP.1996.103.01.05 --- Shallow Marine Sequences --- Richard V. Tyson: Sequence-stratigraphical interpretation of organic facies variations in marine siliciclastic systems: general principles and application to the onshore Kimmeridge Clay Formation, UK / Geological Society, London, Special Publications, 103:75-96, doi:10.1144/GSL.SP.1996.103.01.06 --- J. H. S. Macquaker, K. G. Taylor, T. P. Young, and C. D. Curtis: Sedimentological and geochemical controls on ooidal ironstone and ‘bone-bed’ formation and some comments on their sequence-stratigraphical significance / Geological Society, London, Special Publications, 103:97-107, doi:10.1144/GSL.SP.1996.103.01.07 --- Angela L. Coe: Unconformities within the Portlandian Stage of the Wessex Basin and their sequence-stratigraphical significance / Geological Society, London, Special Publications, 103:109-143, doi:10.1144/GSL.SP.1996.103.01.08 --- Deep Marine Sequences --- G. Shanmugam, R. B. Bloch, S. M. Mitchell, J. E. Damuth, G. W. J. Beamish, R. J. Hodgkinson, T. Straume, S. E. Syvertsen, and K. E. Shields: Slump and debris-flow dominated basin-floor fans in the North Sea: an evaluation of conceptual sequence-stratigraphical models based on conventional core data / Geological Society, London, Special Publications, 103:145-176, doi:10.1144/GSL.SP.1996.103.01.09 --- Andrew S. Gale: Turonian correlation and sequence stratigraphy of the Chalk in southern England / Geological Society, London, Special Publications, 103:177-195, doi:10.1144/GSL.SP.1996.103.01.10 --- N. H. Woodcock, A. J. Butler, J. R. Davies, and R. A. Waters: Sequence stratigraphical analysis of late ordovician and early Silurian depositional systems in the Welsh Basin: a critical assessment / Geological Society, London, Special Publications, 103:197-208, doi:10.1144/GSL.SP.1996.103.01.11 --- Regional Studies --- Robert W. O’B. Knox: Tectonic controls on sequence development in the Palaeocene and earliest Eocene of southeast England: implications for North Sea stratigraphy / Geological Society, London, Special Publications, 103:209-230, doi:10.1144/GSL.SP.1996.103.01.12 --- D. N. Parkinson: Gamma-ray spectrometry as a tool for stratigraphical interpretation: examples from the western European Lower Jurassic / Geological Society, London, Special Publications, 103:231-255, doi:10.1144/GSL.SP.1996.103.01.13 --- B. W. Glover and T. McKie: A sequence stratigraphical approach to the understanding of basin history in orogenic Neoproterozoic successions: an example from the central Highlands of Scotland / Geological Society, London, Special Publications, 103:257-269, doi:10.1144/GSL.SP.1996.103.01.15

Description / Table of Contents: Jean-Christophe Sempéré, Brian P. West, and Louis Géli: The Southeast Indian Ridge between 127° and 132°40′E: contrasts in segmentation characteristics and implications for crustal accretion / Geological Society, London, Special Publications, 118:1-15, doi:10.1144/GSL.SP.1996.118.01.01 --- Philippe Blondel: Segmentation of the Mid-Atlantic Ridge south of the Azores, based on acoustic classification of TOBI data / Geological Society, London, Special Publications, 118:17-28, doi:10.1144/GSL.SP.1996.118.01.02 --- Eddie McAllister and Johnson R. Cann: Initiation and evolution of boundary-wall faults along the Mid-Atlantic Ridge, 25–29°N / Geological Society, London, Special Publications, 118:29-48, doi:10.1144/GSL.SP.1996.118.01.03 --- Simon Allerton, Roger C. Searle, and Bramley J. Murton: Bathymetric segmentation and faulting on the Mid-Atlantic Ridge, 24°00′N to 24°40′N / Geological Society, London, Special Publications, 118:49-60, doi:10.1144/GSL.SP.1996.118.01.04 --- Kate Lawson, Roger C. Searle, Julian A. Pearce, Paul Browning, and Pamela Kempton: Detailed volcanic geology of the MARNOK area, Mid-Atlantic Ridge north of Kane transform / Geological Society, London, Special Publications, 118:61-102, doi:10.1144/GSL.SP.1996.118.01.05 --- Rodey Batiza: Magmatic segmentation of mid-ocean ridges: a review / Geological Society, London, Special Publications, 118:103-130, doi:10.1144/GSL.SP.1996.118.01.06 --- C. J. Robinson, R. S. White, M. J. Bickle, and T. A. Minshull: Restricted melting under the very slow-spreading Southwest Indian ridge / Geological Society, London, Special Publications, 118:131-141, doi:10.1144/GSL.SP.1996.118.01.07 --- Stephen J. Edwards, Trevor J. Falloon, John Malpas, and Rolf B. Pedersen: A review of the petrology of harzburgites at Hess Deep and Garrett Deep: implications for mantle processes beneath segments of the East Pacific Rise / Geological Society, London, Special Publications, 118:143-156, doi:10.1144/GSL.SP.1996.118.01.08 --- Rachel M. Haymon: The response of ridge-crest hydrothermal systems to segmented, episodic magma supply / Geological Society, London, Special Publications, 118:157-168, doi:10.1144/GSL.SP.1996.118.01.09 --- C. R. German, L. M. Parson, B. J. Murton, and H. D. Needham: Hydrothermal activity and ridge segmentation on the Mid-Atlantic Ridge: a tale of two hot-spots? / Geological Society, London, Special Publications, 118:169-184, doi:10.1144/GSL.SP.1996.118.01.10 --- C. J. MacLeod and C. E. Manning: Influence of axial segmentation on hydrothermal circulation at fast-spreading ridges: insights from Hess Deep / Geological Society, London, Special Publications, 118:185-198, doi:10.1144/GSL.SP.1996.118.01.11 --- V. V. Zaykov, V. V. Maslennikov, E. V. Zaykova, and R. J. Herrington: Hydrothermal activity and segmentation in the Magnitogorsk-West Mugodjarian zone on the margins of the Urals palaeo-ocean / Geological Society, London, Special Publications, 118:199-210, doi:10.1144/GSL.SP.1996.118.01.12 --- Eve C. Southward, Verena Tunnicliffe, Michael B. Black, David R. Dixon, and Linda R.J. Dixon: Ocean-ridge segmentation and vent tubeworms (Vestimentifera) in the NE Pacific / Geological Society, London, Special Publications, 118:211-224, doi:10.1144/GSL.SP.1996.118.01.13 --- Verena Tunnicliffe, C. Mary R. Fowler, and Andrew G. Mcarthur: Plate tectonic history and hot vent biogeography / Geological Society, London, Special Publications, 118:225-238, doi:10.1144/GSL.SP.1996.118.01.14 --- E. G. Nisbet and C. M. R. Fowler: The hydrothermal imprint on life: did heat-shock proteins, metalloproteins and photosynthesis begin around hydrothermal vents? / Geological Society, London, Special Publications, 118:239-251, doi:10.1144/GSL.SP.1996.118.01.15

Description / Table of Contents: The Context of Palaeohydrology --- K. J. Gregory: Introduction / Geological Society, London, Special Publications, 115:1-8, doi:10.1144/GSL.SP.1996.115.01.01 --- L. Starkel: Palaeohydrological reconstruction: advantages and disadvantages / Geological Society, London, Special Publications, 115:9-17, doi:10.1144/GSL.SP.1996.115.01.02 --- Nigel W. Arnell: Palaeohydrology and future climate change / Geological Society, London, Special Publications, 115:19-25, doi:10.1144/GSL.SP.1996.115.01.03 --- J. M. Adams and H. Faure: Changes in moisture balance between glacial and interglacial conditions: influence on carbon cycle processes / Geological Society, London, Special Publications, 115:27-42, doi:10.1144/GSL.SP.1996.115.01.04 --- D. E. Walling: Erosion and sediment yield in a changing environment / Geological Society, London, Special Publications, 115:43-56, doi:10.1144/GSL.SP.1996.115.01.05 --- A. G. Brown: Human dimensions of palaeohydrological change / Geological Society, London, Special Publications, 115:57-72, doi:10.1144/GSL.SP.1996.115.01.06 --- V. R. Baker: Discovering Earth’s future in its past: palaeohydrology and global environmental change / Geological Society, London, Special Publications, 115:73-83, doi:10.1144/GSL.SP.1996.115.01.07 --- Approaches to Palaeohydrological Analysis --- Mediterranean, Tropical and Monsoon Regions --- G. Benito, M. J. Machado, and A. Pérez-González: Climate change and flood sensitivity in Spain / Geological Society, London, Special Publications, 115:85-98, doi:10.1144/GSL.SP.1996.115.01.08 --- Ian C. Fuller, Mark G. Macklin, David G. Passmore, Paul A. Brewer, John Lewin, and Ann G. Wintle: Geochronologies and environmental records of Quaternary fluvial sequences in the Guadalope basin, northeast Spain, based on luminescence dating / Geological Society, London, Special Publications, 115:99-120, doi:10.1144/GSL.SP.1996.115.01.09 --- Yehouda Enzel, Lisa L. Ely, P. Kyle House, and Victor R. Baker: Magnitude and frequency of Holocene palaeofloods in the southwestern United States: A review and discussion of implications / Geological Society, London, Special Publications, 115:121-137, doi:10.1144/GSL.SP.1996.115.01.10 --- Michael F. Thomas and Martin B. Thorp: The response of geomorphic systems to climatic and hydrological change during the Late Glacial and early Holocene in the humid and sub-humid tropics / Geological Society, London, Special Publications, 115:139-153, doi:10.1144/GSL.SP.1996.115.01.11 --- Vishwas S. Kale, Lisa L. Ely, Yehouda Enzel, and Victor R. Baker: Palaeo and historical flood hydrology, Indian Peninsula / Geological Society, London, Special Publications, 115:155-163, doi:10.1144/GSL.SP.1996.115.01.12 --- Cold Regions --- Paul A. Carling: A preliminary palaeohydraulic model applied to late Quaternary gravel dunes: Altai Mountains, Siberia / Geological Society, London, Special Publications, 115:165-179, doi:10.1144/GSL.SP.1996.115.01.13 --- A. F. Yamskikh: Late Quaternary intra-continental river palaeohydrology and polycyclic terrace formation: the example of south Siberian river valleys / Geological Society, London, Special Publications, 115:181-190, doi:10.1144/GSL.SP.1996.115.01.14 --- Temperate Regions --- J. M. Hooke: River responses to decadal-scale changes in discharge regime: the Gila River, SE Arizona / Geological Society, London, Special Publications, 115:191-204, doi:10.1144/GSL.SP.1996.115.01.15 --- T. Kalicki: Climatic or anthropogenic alluviation in Central European valleys during the Holocene? / Geological Society, London, Special Publications, 115:205-215, doi:10.1144/GSL.SP.1996.115.01.16 --- Barbara T. Rumsby and Mark G. Macklin: River response to the last neoglacial (the ‘Little Ice Age’) in northern, western and central Europe / Geological Society, London, Special Publications, 115:217-233, doi:10.1144/GSL.SP.1996.115.01.17 --- A Future for Palaeohydrology --- J. Branson, K. J. Gregory, and M. J. Clark: Issues in scientific co-operation on information sharing: the case of palaeohydrology / Geological Society, London, Special Publications, 115:235-249, doi:10.1144/GSL.SP.1996.115.01.18 --- J. R. Pilcher: The Past Global Changes (PAGES) Project / Geological Society, London, Special Publications, 115:251-256, doi:10.1144/GSL.SP.1996.115.01.19 --- A. G. Brown: Palaeohydrology: prospects and future advances / Geological Society, London, Special Publications, 115:257-265, doi:10.1144/GSL.SP.1996.115.01.20

Description / Table of Contents: John T. Andrews, William E. N. Austin, Helene Bergsten, and Anne E. Jennings: The Late Quaternary palaeoceanography of North Atlantic margins: an introduction / Geological Society, London, Special Publications, 111:1-6, doi:10.1144/GSL.SP.1996.111.01.01 --- Karen Luise Knudsen and William E. N. Austin: Late glacial foraminifera / Geological Society, London, Special Publications, 111:7-10, doi:10.1144/GSL.SP.1996.111.01.02 --- Canadian North Atlantic Margins --- J. T. Andrews, L. E. Osterman, A. E. Jennings, J. P. M. Syvitski, G. H. Miller, and N. Weiner: Abrupt changes in marine conditions, Sunneshine Fiord, eastern Baffin Island, NWT during the last deglacial transition: Younger Dryas and H-0 events / Geological Society, London, Special Publications, 111:11-27, doi:10.1144/GSL.SP.1996.111.01.03 --- Anne E. Jennings, Kathy A. Tedesco, John T. Andrews, and Matthew E. Kirby: Shelf erosion and glacial ice proximity in the Labrador Sea during and after Heinrich events (H-3 or 4 to H-0) as shown by foraminifera / Geological Society, London, Special Publications, 111:29-49, doi:10.1144/GSL.SP.1996.111.01.04 --- James P. M. Syvitski, C. F. Michael Lewis, David J. W. Piper, and James P. M. Syvitski: Palaeoceanographic information derived from acoustic surveys of glaciated continental margins: examples from eastern Canada / Geological Society, London, Special Publications, 111:51-76, doi:10.1144/GSL.SP.1996.111.01.05 --- R. R. Stea, R. Boyd, O. Costello, G. B. J. Fader, and D. B. Scott: Deglaciation of the inner Scotian Shelf, Nova Scotia: correlation of terrestrial and marine glacial events / Geological Society, London, Special Publications, 111:77-101, doi:10.1144/GSL.SP.1996.111.01.06 --- Frank R. Hall and Stefanie J. Reed: Rock (mineral)-magnetic properties of post-glacial (16–0.5 ka) sediments from the Emerald Basin (Scotian Shelf), Canada / Geological Society, London, Special Publications, 111:103-115, doi:10.1144/GSL.SP.1996.111.01.07 --- Arctic Ocean, East Greenland Margin and Northeastern North Atlantic --- Thomas M. Cronin, Gary S. Dwyer, Paul A. Baker, Julio Rodriguez-Lazaro, and William M. Briggs, Jr: Deep-sea ostracode shell chemistry (Mg:Ca ratios) and Late Quaternary Arctic Ocean history / Geological Society, London, Special Publications, 111:117-134, doi:10.1144/GSL.SP.1996.111.01.08 --- Ruediger Stein, Seung-il Nam, Hannes Grobe, and Hans Hubberten: Late Quaternary glacial history and short-term ice-rafted debris fluctuations along the East Greenland continental margin / Geological Society, London, Special Publications, 111:135-151, doi:10.1144/GSL.SP.1996.111.01.09 --- J. T. Andrews, Anne E. Jennings, T. Cooper, Kerstin M. Williams, and J. Mienert: Late Quaternary sedimentation along a fjord to shelf (trough) transect, East Greenland (c. 68° N) / Geological Society, London, Special Publications, 111:153-166, doi:10.1144/GSL.SP.1996.111.01.10 --- J. C. Duplessy, L. D. Labeyrie, and M. Paterne: North Atlantic sea surface conditions during the Younger Dryas cold event / Geological Society, London, Special Publications, 111:167-175, doi:10.1144/GSL.SP.1996.111.01.11 --- Nalân Koç, Eystein Jansen, Morten Hald, and Laurent Labeyrie: Late glacial-Holocene sea surface temperatures and gradients between the North Atlantic and the Norwegian Sea: implications for the Nordic heat pump / Geological Society, London, Special Publications, 111:177-185, doi:10.1144/GSL.SP.1996.111.01.12 --- Northwestern European and European Arctic Margins --- W. E. N. Austin and D. Kroon: Late glacial sedimentology, foraminifera and stable isotope stratigraphy of the Hebridean Continental Shelf, northwest Scotland / Geological Society, London, Special Publications, 111:187-213, doi:10.1144/GSL.SP.1996.111.01.13 --- J. D. Peacock: Marine mollescan proxy data applied to Scottish late glacial and Flandrian sites: strengths and limitations / Geological Society, London, Special Publications, 111:215-228, doi:10.1144/GSL.SP.1996.111.01.14 --- Ian Shennan, Mairéad M. Rutherford, James B. Innes, and Kevin J. Walker: Late glacial sea level and ocean margin environmental changes interpreted from biostratigraphic and lithostratigraphic studies of isolation basins in northwest Scotland / Geological Society, London, Special Publications, 111:229-244, doi:10.1144/GSL.SP.1996.111.01.15 --- Hui Jiang and Kjell Nordberg: Late Weichselian environmental changes of the southern Kattegat, Scandinavia, inferred from diatom records / Geological Society, London, Special Publications, 111:245-260, doi:10.1144/GSL.SP.1996.111.01.16 --- Niels Richardt: Sedimentological examination of the Late Weichselian sea-level history following deglaciation of northern Denmark / Geological Society, London, Special Publications, 111:261-273, doi:10.1144/GSL.SP.1996.111.01.17 --- Morten Hald, Trond Dokken, and Sveinung Hagen: Palaeoceanography on the European arctic margin during the last deglaciation / Geological Society, London, Special Publications, 111:275-287, doi:10.1144/GSL.SP.1996.111.01.18 --- J. Lloyd, D. Kroon, C. Laban, and G. Boulton: Deglaciation history and palaeoceanography of the western Spitsbergen margin since the last glacial maximum / Geological Society, London, Special Publications, 111:289-301, doi:10.1144/GSL.SP.1996.111.01.19 --- Tore O. Vorren and Jan S. Laberg: Late glacial air temperature, oceanographic and ice sheet interactions in the southern Barents Sea region / Geological Society, London, Special Publications, 111:303-321, doi:10.1144/GSL.SP.1996.111.01.20 --- Leonid Polyak and Valery Mikhailov: Post-glacial environments of the southeastern Barents Sea: foraminiferal evidence / Geological Society, London, Special Publications, 111:323-337, doi:10.1144/GSL.SP.1996.111.01.21 --- Mikko Punkari: Late Weichselian deglaciation of the Barents Sea and low salinity events in the Norwegian Sea / Geological Society, London, Special Publications, 111:339-349, doi:10.1144/GSL.SP.1996.111.01.22 --- Related Topics --- Karin A. F. Zonneveld and Karin P. Boessenkool: Palynology as a tool for land-sea correlation; an example from the eastern Mediterranean region / Geological Society, London, Special Publications, 111:351-357, doi:10.1144/GSL.SP.1996.111.01.23 --- Nils-Axel Mörner: Earth rotation, ocean circulation and palaeoclimate: the North Atlantic — European example / Geological Society, London, Special Publications, 111:359-370, doi:10.1144/GSL.SP.1996.111.01.24