ALBERT

Description / Table of Contents: K. W. Glennie: Permian and Triassic rifting in northwest Europe / Geological Society, London, Special Publications, 91:1-5, doi:10.1144/GSL.SP.1995.091.01.01 --- M. P. Coward: Structural and tectonic setting of the Permo-Triassic basins of northwest Europe / Geological Society, London, Special Publications, 91:7-39, doi:10.1144/GSL.SP.1995.091.01.02 --- A. Carter, A. Yelland, C. Bristow, and A. J. Hurford: Thermal histories of Permian and Triassic basins in Britain derived from fission track analysis / Geological Society, London, Special Publications, 91:41-56, doi:10.1144/GSL.SP.1995.091.01.03 --- T. Swiecicki, P. Wilcockson, A. Canham, G. Whelan, and H. Homann: Dating, correlation and stratigraphy of the Triassic sediments in the West Shetlands area / Geological Society, London, Special Publications, 91:57-85, doi:10.1144/GSL.SP.1995.091.01.04 --- K. Hitchen, M. S. Stoker, D. Evans, and B. Beddoe-Stephens: Permo-Triassic sedimentary and volcanic rocks in basins to the north and west of Scotland / Geological Society, London, Special Publications, 91:87-102, doi:10.1144/GSL.SP.1995.091.01.05 --- T. B. Anderson, J. Parnell, and A. H. Ruffell: Influence of basement on the geometry of Permo-Triassic basins in the northwest British Isles / Geological Society, London, Special Publications, 91:103-122, doi:10.1144/GSL.SP.1995.091.01.06 --- P. J. Goldsmith, B. Rich, and J. Standring: Triassic correlation and stratigraphy in the South Central Graben, UK North Sea / Geological Society, London, Special Publications, 91:123-143, doi:10.1144/GSL.SP.1995.091.01.07 --- P. A. Griffiths, M. R. Allen, J. Craig, W. R. Fitches, and R. J. Whittington: Distinction between fault and salt control of Mesozoic sedimentation on the southern margin of the Mid-North Sea High / Geological Society, London, Special Publications, 91:145-159, doi:10.1144/GSL.SP.1995.091.01.08 --- R. A. Chadwick and D. J. Evans: The timing and direction of Permo-Triassic extension in southern Britain / Geological Society, London, Special Publications, 91:161-192, doi:10.1144/GSL.SP.1995.091.01.09 --- A. Ruffell, M. P. Coward, and M. Harvey: Geometry and tectonic evolution of megasequences in the Plymouth Bay Basin, English Channel / Geological Society, London, Special Publications, 91:193-214, doi:10.1144/GSL.SP.1995.091.01.10 --- P. M. Shannon: Permo-Triassic development of the Celtic Sea region, offshore Ireland / Geological Society, London, Special Publications, 91:215-237, doi:10.1144/GSL.SP.1995.091.01.11 --- M. L. Keeley: New evidence of Permo-Triassic rifting, onshore southern Ireland, and its implications for Variscan structural inheritance / Geological Society, London, Special Publications, 91:239-253, doi:10.1144/GSL.SP.1995.091.01.12

Description / Table of Contents: Mohammed S. Ameen: Fractography: fracture topography as a tool in fracture mechanics and stress analysis. An introduction / Geological Society, London, Special Publications, 92:1-10, doi:10.1144/GSL.SP.1995.092.01.01 --- Part 1: Fractographic Studies --- Methods of Observation, Data Collection and Processing/Quantitative Fractography --- Ömer Aydan and Yasuhiro Shimizu: Surface morphology characteristics of rock discontinuities with particular reference to their genesis / Geological Society, London, Special Publications, 92:11-26, doi:10.1144/GSL.SP.1995.092.01.02 --- Mark W. Jessell, Simon J. D. Cox, Phillip Schwarze, and William L. Power: The anisotropy of surface roughness measured using a digital photogrammetric technique / Geological Society, London, Special Publications, 92:27-37, doi:10.1144/GSL.SP.1995.092.01.03 --- Application of Fractography to Fracture Analysis from Core --- P. Bankwitz and E. Bankwitz: Fractographic features on joints of KTB drill cores (Bavaria, Germany) / Geological Society, London, Special Publications, 92:39-58, doi:10.1144/GSL.SP.1995.092.01.04 --- Fractography Applied to the Analysis of Experimentally Produced Fractures in Rocks and Non-Rocks --- B. R. Kulander and Stuart L. Dean: Observations on fractography with laboratory experiments for geologists / Geological Society, London, Special Publications, 92:59-82, doi:10.1144/GSL.SP.1995.092.01.05 --- C. Butenuth and M. H. de Freitas: The character of rock surfaces formed in Mode I / Geological Society, London, Special Publications, 92:83-96, doi:10.1144/GSL.SP.1995.092.01.06 --- Fractography Applied to Fracture Analysis in Field Studies Aimed at Understanding Regional Tectonics --- Mohammed S. Ameen: Fractography and fracture characterization in the Permo-Triassic sandstones and the Lower Palaeozoic Basement, West Cumbria, UK / Geological Society, London, Special Publications, 92:97-147, doi:10.1144/GSL.SP.1995.092.01.07 --- Mohammed S. Ameen: Fracture characterization in the Chalk and the evolution of the Thanet monocline, Kent, southern England / Geological Society, London, Special Publications, 92:149-174, doi:10.1144/GSL.SP.1995.092.01.08 --- John C. Roberts: Fracture surface markings in Liassic limestone at Lavernock Point, South Wales / Geological Society, London, Special Publications, 92:175-186, doi:10.1144/GSL.SP.1995.092.01.09 --- Part 2: Non-Fractographic Studies --- Miscellaneous Studies of Fractures --- J. W. Cosgrove: The expression of hydraulic fracturing in rocks and sediments / Geological Society, London, Special Publications, 92:187-196, doi:10.1144/GSL.SP.1995.092.01.10 --- A. M. Goodwin: Spatial change in joint geometry in the Chalk of eastern England / Geological Society, London, Special Publications, 92:197-213, doi:10.1144/GSL.SP.1995.092.01.11 --- Michael R. Gross, Mark P. Fischer, Terry Engelder, and Roy J. Greenfield: Factors controlling joint spacing in interbedded sedimentary rocks: integrating numerical models with field observations from the Monterey Formation, USA / Geological Society, London, Special Publications, 92:215-233, doi:10.1144/GSL.SP.1995.092.01.12

Description / Table of Contents: R. E. Dunay and E. A. Hailwood: Non-biostratigraphical methods of dating and correlation: an introduction / Geological Society, London, Special Publications, 89:1-2, doi:10.1144/GSL.SP.1995.089.01.01 --- Andrew Morton and Andrew Hurst: Correlation of sandstones using heavy minerals: an example from the Statfjord Formation of the Snorre Field, northern North Sea / Geological Society, London, Special Publications, 89:3-22, doi:10.1144/GSL.SP.1995.089.01.02 --- Maria A. Mange-Rajetzky: Subdivision and correlation of monotonous sandstone sequences using high-resolution heavy mineral analysis, a case study: the Triassic of the Central Graben / Geological Society, London, Special Publications, 89:23-30, doi:10.1144/GSL.SP.1995.089.01.03 --- C. V. Jeans: Clay mineral stratigraphy in Palaeozoic and Mesozoic red bed facies onshore and offshore UK / Geological Society, London, Special Publications, 89:31-55, doi:10.1144/GSL.SP.1995.089.01.04 --- Andrew Carter, Charles S. Bristow, and Anthony J. Hurford: The application of fission track analysis to the dating of barren sequences: examples from red beds in Scotland and Thailand / Geological Society, London, Special Publications, 89:57-68, doi:10.1144/GSL.SP.1995.089.01.05 --- A. Racey, M. A. Love, R. M. Bobolecki, and J. N. Walsh: The use of chemical element analyses in the study of biostratigraphically barren sequences: an example from the Triassic of the central North Sea (UKCS) / Geological Society, London, Special Publications, 89:69-105, doi:10.1144/GSL.SP.1995.089.01.06 --- Timothy J. Pearce and Ian Jarvis: High-resolution chemostratigraphy of Quaternary distal turbidites: a case study of new methods for the analysis and correlation of barren sequences / Geological Society, London, Special Publications, 89:107-143, doi:10.1144/GSL.SP.1995.089.01.07 --- John Roberts, Jonathan Claoue-Long, Peter J. Jones, and Clinton B. Foster: SHRIMP zircon age control of Gondwanan sequences in Late Carboniferous and Early Permian Australia / Geological Society, London, Special Publications, 89:145-174, doi:10.1144/GSL.SP.1995.089.01.08 --- Jonathan Russell: Direct Pb/Pb dating of Silurian macrofossils from Gotland, Sweden / Geological Society, London, Special Publications, 89:175-200, doi:10.1144/GSL.SP.1995.089.01.09 --- A. Dalland, E. W. Mearns, and J. J. McBride: The application of samarium-neodymium (Sm-Nd) Provenance Ages to correlation of biostratigraphically barren strata: a case study of the Statfjord Formation in the Gullfaks Oilfield, Norwegian North Sea / Geological Society, London, Special Publications, 89:201-222, doi:10.1144/GSL.SP.1995.089.01.10 --- H. M. Rendell: Luminescence dating of Quaternary sediments / Geological Society, London, Special Publications, 89:223-235, doi:10.1144/GSL.SP.1995.089.01.11 --- Chang-Shu Yang and Wim F. P. Kouwe: Wireline log-cyclicity analysis as a tool for dating and correlating barren strata: an example from the Upper Rotliegend of The Netherlands / Geological Society, London, Special Publications, 89:237-259, doi:10.1144/GSL.SP.1995.089.01.12

Description / Table of Contents: L. M. Parson, C. L. Walker, and D. R. Dixon: Hydrothermal vents and processes / Geological Society, London, Special Publications, 87:1-2, doi:10.1144/GSL.SP.1995.087.01.01 --- C. R. German, E. T. Baker, and G. Klinkhammer: Regional setting of hydrothermal activity / Geological Society, London, Special Publications, 87:3-15, doi:10.1144/GSL.SP.1995.087.01.02 --- Sergey G. Krasnov, Irina M. Poroshina, and Georgiy A. Cherkashev: Geological setting of high-temperature hydrothermal activity and massive sulphide formation on fast- and slow-spreading ridges / Geological Society, London, Special Publications, 87:17-32, doi:10.1144/GSL.SP.1995.087.01.03 --- Bramley J. Murton, Cindy Van Dover, and Eve Southward: Geological setting and ecology of the Broken Spur hydrothermal vent field: 29°10′N on the Mid-Atlantic Ridge / Geological Society, London, Special Publications, 87:33-41, doi:10.1144/GSL.SP.1995.087.01.04 --- S. G. Krasnov, G. A. Cherkashev, T. V. Stepanova, B. N. Batuyev, A. G. Krotov, B. V. Malin, M. N. Maslov, V. F. Markov, I. M. Poroshina, M. S. Samovarov, A. M. Ashadze, L. I. Lazareva, and I. K. Ermolayev: Detailed geological studies of hydrothermal fields in the North Atlantic / Geological Society, London, Special Publications, 87:43-64, doi:10.1144/GSL.SP.1995.087.01.05 --- Edward T. Baker: Characteristics of hydrothermal discharge following a magmatic intrusion / Geological Society, London, Special Publications, 87:65-76, doi:10.1144/GSL.SP.1995.087.01.06 --- J. M. Edmond, A. C. Campbell, M. R. Palmer, G. P. Klinkhammer, C. R. German, H. N. Edmonds, H. Elderfield, G. Thompson, and P. Rona: Time series studies of vent fluids from the TAG and MARK sites (1986, 1990) Mid-Atlantic Ridge: a new solution chemistry model and a mechanism for Cu/Zn zonation in massive sulphide orebodies / Geological Society, London, Special Publications, 87:77-86, doi:10.1144/GSL.SP.1995.087.01.07 --- G. P. Klinkhammer, C. S. Chin, C. Wilson, and C. R. German: Venting from the Mid-Atlantic Ridge at 37°17′N: the Lucky Strike hydrothermal site / Geological Society, London, Special Publications, 87:87-96, doi:10.1144/GSL.SP.1995.087.01.08 --- R. H. James, H. Elderfield, M. D. Rudnicki, C. R. German, M. R. Palmer, C. Chin, M. J. Greaves, E. Gurvich, G. P. Klinkhammer, E. Ludford, R. A. Mills, J. Thomson, and A. C. Williams: Hydrothermal plumes at Broken Spur, 29°N Mid-Atlantic Ridge: chemical and physical characteristics / Geological Society, London, Special Publications, 87:97-110, doi:10.1144/GSL.SP.1995.087.01.09 --- M. R. Palmer, E. M. Ludford, C. R. German, and M. D. Lilley: Dissolved methane and hydrogen in the Steinahóll hydrothermal plume, 63°N, Reykjanes Ridge / Geological Society, London, Special Publications, 87:111-120, doi:10.1144/GSL.SP.1995.087.01.10 --- Rachel A. Mills: Hydrothermal deposits and metalliferous sediments from TAG, 26°N Mid-Atlantic Ridge / Geological Society, London, Special Publications, 87:121-132, doi:10.1144/GSL.SP.1995.087.01.11 --- F. M. Stuart, P. J. Harrop, R. Knott, A. E. Fallick, G. Turner, Y. Fouquet, and D. Rickard: Noble gas isotopes in 25 000 years of hydrothermal fluids from 13°N on the East Pacific Rise / Geological Society, London, Special Publications, 87:133-143, doi:10.1144/GSL.SP.1995.087.01.12 --- Penny Dickson, Adam Schultz, and Andrew Woods: Preliminary modelling of hydrothermal circulation within mid-ocean ridge sulphide structures / Geological Society, London, Special Publications, 87:145-157, doi:10.1144/GSL.SP.1995.087.01.13 --- A. Rachel Pascoe and Johnson R. Cann: Modelling diffuse hydrothermal flow in black smoker vent fields / Geological Society, London, Special Publications, 87:159-173, doi:10.1144/GSL.SP.1995.087.01.14 --- Rowena C. Duckworth, Richard Knott, Anthony E. Fallick, David Rickard, Bramley J. Murton, and Cindy Van Dover: Mineralogy and sulphur isotope geochemistry of the Broken Spur sulphides, 29°N, Mid-Atlantic Ridge / Geological Society, London, Special Publications, 87:175-189, doi:10.1144/GSL.SP.1995.087.01.15 --- Steven D. Scott and Raymond A. Binns: Hydrothermal processes and contrasting styles of mineralization in the western Woodlark and eastern Manus basins of the western Pacific / Geological Society, London, Special Publications, 87:191-205, doi:10.1144/GSL.SP.1995.087.01.16 --- Richard Knott, Anthony E. Fallick, David Rickard, and Harald Bäcker: Mineralogy and sulphur isotope characteristics of a massive sulphide boulder, Galapagos Rift, 85°55′W / Geological Society, London, Special Publications, 87:207-222, doi:10.1144/GSL.SP.1995.087.01.17 --- G. A. Cherkashev: Hydrothermal input into sediments of the Mid-Atlantic Ridge / Geological Society, London, Special Publications, 87:223-229, doi:10.1144/GSL.SP.1995.087.01.18 --- R. A. Hodkinson and D. S. Cronan: Hydrothermal sedimentation at ODP Sites 834 and 835 in relation to crustal evolution of the Lau Backarc Basin / Geological Society, London, Special Publications, 87:231-248, doi:10.1144/GSL.SP.1995.087.01.19 --- S. M. Sudarikov, M. P. Davydov, V. L. Bazelyan, and V. G. Tarasov: Distribution and transformation of Fe and Mn in hydrothermal plumes and sediments and the potential function of microbiocoenoses / Geological Society, London, Special Publications, 87:249-255, doi:10.1144/GSL.SP.1995.087.01.20 --- Cindy Lee van Dover: Ecology of Mid-Atlantic Ridge hydrothermal vents / Geological Society, London, Special Publications, 87:257-294, doi:10.1144/GSL.SP.1995.087.01.21 --- Bruce Shillito, Jean-Pierre Lechaire, Gérard Goffinet, and Francoise Gaill: Composition and morphogenesis of the tubes of vestimentiferan worms / Geological Society, London, Special Publications, 87:295-302, doi:10.1144/GSL.SP.1995.087.01.22 --- P. R. Dando, J. A. Hughes, and F. Thiermann: Preliminary observations on biological communities at shallow hydrothermal vents in the Aegean Sea / Geological Society, London, Special Publications, 87:303-317, doi:10.1144/GSL.SP.1995.087.01.23 --- S. M. Sudarikov and S. V. Galkin: Geochemistry of the Snake Pit vent field and its implications for vent and non-vent fauna / Geological Society, London, Special Publications, 87:319-327, doi:10.1144/GSL.SP.1995.087.01.24 --- Gareth Rieley, Cindy L. van Dover, David B. Hedrick, David C. White, and Geoffrey Eglinton: Lipid characteristics of hydrothermal vent organisms from 9°N, East Pacific Rise / Geological Society, London, Special Publications, 87:329-342, doi:10.1144/GSL.SP.1995.087.01.25 --- D. R. Dixon, D. A. S. B. Jollivet, L. R. J. Dixon, J. A. Nott, and P. W. H. Holland: The molecular identification of early life-history stages of hydrothermal vent organisms / Geological Society, London, Special Publications, 87:343-350, doi:10.1144/GSL.SP.1995.087.01.26 --- Don A. Cowan: Hyperthermophilic enzymes: biochemistry and biotechnology / Geological Society, London, Special Publications, 87:351-363, doi:10.1144/GSL.SP.1995.087.01.27 --- Christopher R. German and Martin V. Angel: Hydrothermal fluxes of metals to the oceans: a comparison with anthropogenic discharge / Geological Society, London, Special Publications, 87:365-372, doi:10.1144/GSL.SP.1995.087.01.28 --- Kevin G. Speer and Karl R. Helfrich: Hydrothermal plumes: a review of flow and fluxes / Geological Society, London, Special Publications, 87:373-385, doi:10.1144/GSL.SP.1995.087.01.29 --- Mark D. Rudnicki: Particle formation, fallout and cycling within the buoyant and non-buoyant plume above the TAG vent field / Geological Society, London, Special Publications, 87:387-396, doi:10.1144/GSL.SP.1995.087.01.30

Description / Table of Contents: Dan W. J. Bosence and Peter A. Allison: A review of marine palaeoenvironmental analysis from fossils / Geological Society, London, Special Publications, 83:1-5, doi:10.1144/GSL.SP.1995.083.01.01 --- David J. Bottjer, Kathleen A. Campbell, Jennifer K. Schubert, and Mary L. Droser: Palaeoecological models, non-uniformitarianism, and tracking the changing ecology of the past / Geological Society, London, Special Publications, 83:7-26, doi:10.1144/GSL.SP.1995.083.01.02 --- Richard M. Corfield: An introduction to the techniques, limitations and landmarks of carbonate oxygen isotope palaeothermometry / Geological Society, London, Special Publications, 83:27-42, doi:10.1144/GSL.SP.1995.083.01.03 --- J. W. De Leeuw, N. L. Frewin, P. F. Van Bergen, J. S. Sinninghe Damsté, and M. E. Collinson: Organic carbon as a palaeoenvironmental indicator in the marine realm / Geological Society, London, Special Publications, 83:43-71, doi:10.1144/GSL.SP.1995.083.01.04 --- Jean-Claude Plaziat: Modern and fossil mangroves and mangals: their climatic and biogeographic variability / Geological Society, London, Special Publications, 83:73-96, doi:10.1144/GSL.SP.1995.083.01.05 --- Peter A. Allison, Paul B. Wignall, and Carlton E. Brett: Palaeo-oxygenation: effects and recognition / Geological Society, London, Special Publications, 83:97-112, doi:10.1144/GSL.SP.1995.083.01.06 --- M. D. Brasier: Fossil indicators of nutrient levels. 1: Eutrophication and climate change / Geological Society, London, Special Publications, 83:113-132, doi:10.1144/GSL.SP.1995.083.01.07 --- M. D. Brasier: Fossil indicators of nutrient levels. 2: Evolution and extinction in relation to oligotrophy / Geological Society, London, Special Publications, 83:133-150, doi:10.1144/GSL.SP.1995.083.01.08 --- Roland Goldring: Organisms and the substrate: response and effect / Geological Society, London, Special Publications, 83:151-180, doi:10.1144/GSL.SP.1995.083.01.09 --- Christine Perrin, Dan Bosence, and Brian Rosen: Quantitative approaches to palaeozonation and palaeobathymetry of corals and coralline algae in Cenozoic reefs / Geological Society, London, Special Publications, 83:181-229, doi:10.1144/GSL.SP.1995.083.01.10 --- Abigail M. Smith: Palaeoenvironmental interpretation using bryozoans: a review / Geological Society, London, Special Publications, 83:231-243, doi:10.1144/GSL.SP.1995.083.01.11 --- John W. Murray: Microfossil indicators of ocean water masses, circulation and climate / Geological Society, London, Special Publications, 83:245-264, doi:10.1144/GSL.SP.1995.083.01.12

Description / Table of Contents: William A. England and John M. Cubitt: Geochemistry of reservoirs, an introduction / Geological Society, London, Special Publications, 86:1-3, doi:10.1144/GSL.SP.1995.086.01.01 --- General Reviews and New Techniques --- S. R. Larter and A. C. Aplin: Reservoir geochemistry: methods, applications and opportunities / Geological Society, London, Special Publications, 86:5-32, doi:10.1144/GSL.SP.1995.086.01.02 --- Knut Bjørlykke, Per Aagaard, Per K. Egeberg, and Scott P. Simmons: Geochemical constraints from formation water analyses from the North Sea and the Gulf Coast Basins on quartz, feldspar and illite precipitation in reservoir rocks / Geological Society, London, Special Publications, 86:33-50, doi:10.1144/GSL.SP.1995.086.01.03 --- Leonid Anissimov: Geochemical criteria for reservoir characterization / Geological Society, London, Special Publications, 86:51-58, doi:10.1144/GSL.SP.1995.086.01.04 --- P. C. Smalley, T. A. Dodd, I. L. Stockden, A. Råheim, and E. W. Mearns: Compositional heterogeneities in oilfield formation waters: identifying them, using them / Geological Society, London, Special Publications, 86:59-69, doi:10.1144/GSL.SP.1995.086.01.05 --- R. P. Philp, A. N. Bishop, J.-C. Del Rio, and J. Allen: Characterization of high molecular weight hydrocarbons (〉C40) in oils and reservoir rocks / Geological Society, London, Special Publications, 86:71-85, doi:10.1144/GSL.SP.1995.086.01.06 --- A. Wilhelms and S. R. Larter: Overview of the geochemistry of some tar mats from the North Sea and USA: implications for tar-mat origin / Geological Society, London, Special Publications, 86:87-101, doi:10.1144/GSL.SP.1995.086.01.07 --- Maowen Li, S. R. Larter, D. Stoddart, and M. Bjorøy: Fractionation of pyrrolic nitrogen compounds in petroleum during migration: derivation of migration-related geochemical parameters / Geological Society, London, Special Publications, 86:103-123, doi:10.1144/GSL.SP.1995.086.01.09 --- Case Studies --- B. McNeil, H. F. Shaw, and A. H. Rankin: Diagenesis of the Rotliegend Sandstones in the V-Fields, southern North sea: a fluid inclusion study / Geological Society, London, Special Publications, 86:125-139, doi:10.1144/GSL.SP.1995.086.01.10 --- Norman H. Oxtoby, Alan W. Mitchell, and Jon G. Gluyas: The filling and emptying of the Ula Oilfield: fluid inclusion constraints / Geological Society, London, Special Publications, 86:141-157, doi:10.1144/GSL.SP.1995.086.01.11 --- I. Horstad, S. R. Larter, and N. Mills: Migration of hydrocarbons in the Tampen Spur area, Norwegian North Sea: a reservoir geochemical evaluation / Geological Society, London, Special Publications, 86:159-183, doi:10.1144/GSL.SP.1995.086.01.12 --- W. A. England, A. H. Muggeridge, P. J. Clifford, and Z. Tang: Modelling density-driven mixing rates in petroleum reservoirs on geological time-scales, with application to the detection of barriers in the Forties Field (UKCS) / Geological Society, London, Special Publications, 86:185-201, doi:10.1144/GSL.SP.1995.086.01.13 --- D. A. Karlsen, B. Nyland, B. Flood, S. E. Ohm, T. Brekke, S. Olsen, and K. Backer-Owe: Petroleum geochemistry of the Haltenbanken, Norwegian continental shelf / Geological Society, London, Special Publications, 86:203-256, doi:10.1144/GSL.SP.1995.086.01.14 --- D. P. Stoddart, P. B. Hall, S. R. Larter, J. Brasher, Maowen Li, and M. Bjorøy: The reservoir geochemistry of the Eldfisk Field, Norwegian North Sea / Geological Society, London, Special Publications, 86:257-279, doi:10.1144/GSL.SP.1995.086.01.15 --- P. C. Mason, R. Burwood, and B. Mycke: The reservoir geochemistry and petroleum charging histories of Palaeogene-reservoired fields in the Outer Witch Ground Graben / Geological Society, London, Special Publications, 86:281-301, doi:10.1144/GSL.SP.1995.086.01.16 --- Andrew C. Aplin and Max L. Coleman: Sour gas and water chemistry of the Bridport Sands reservoir, Wytch Farm, UK / Geological Society, London, Special Publications, 86:303-314, doi:10.1144/GSL.SP.1995.086.01.17

Description / Table of Contents: PREFACE The four-year period of activity of the Groupement de Recherche 942 (GDR) of the Centre National de la Recherche Scientifique (CNRS) came to an end in December 1993. This GDR was a scientific association grouping research teams from the academic sphere -- i.e. the Unités de Recherches Associées 723 & 724 of the CNRS as well as the Universities of Orléans and Paris-Sud -- and from the industrial world: Elf-Aquitaine Production, TOTAL and the Institut Français du Pétrole (IFP). The aim of the GDR was to understand the processes and the causes of organic carbon fossilization in sediments, especially when they can be modified by environmental conditions such as climate, eustatism, productivity etc., factors which can alko interact. This goal implies the simultaneous study of ancient geological formations (hydrocarbon source rocks from the famous Kimmeridge Clay Formation) and recent Quaternary sediments (the Lac du Bouchet or lake Bouchet maar, Massif Central, France). In the latter case, we benefit from a fine-scale stratigraphical framework as well as a reliable reconstruction of the local and regional environment. This volume is a collection of papers representing oral presentations given on December 7, 1993, at the Société Géologique de France in Paris, during the final meeting of the GDR. These articles thus report the latest developments of the studies carried out under the GDR. However, this is not the first publication of our results, which can be found in the papers referred to in each article. The Kimmeridge Clay Formation was previously studied in 1987, by the Yorkim Group from IFP, Elf-Aquitaine and the British Geological Survey, on the basis of a series of wells drilled across the Cleveland Basin of Yorkshire. In each well, the distribution with depth of the total organic content is cyclic. We have compared some of the organic cycles from two wells (Matron and Ebberston) based on mineralogy, organic and inorganic geochemistry and petrography, at a high resolution scale (centimetric). The main conclusion of this work is that the driving force for organic matter accumulation in the studied cycles was organic phytoplankton productivity. Oxygenation conditions seem to have played a secondary role as a positive feedback action enhancing organic matter storage. Lac du Bouchet is located on the Devès volcanic plateau, 15 km SW of Le Puy en Velay, at an altitude of 1205 m. The depth of the water column is 28 m. The lake has a subcircular shape (1 km in diameter) and a very restricted watershed. This site is exceptionally suitable for research on climate variations and palaeomagnetic field modifications (Euromaars EC Program). The GDR focused on sedimentary organic matter and its relationship to inorganic phases. An important result is that organic matter appears to be a good indicator of palaeoenvironmental reconstructions for over 350 000 years. In addition, the study of early diagenetic reactions in surficial sediments (porewater and solid phase) allows the specification of the processes of organic matter degradation and storage in such an oligothrophic lake.

Description / Table of Contents: PREFACE In the geologic record, vertical crustal uplift has often resulted in erosional removal of huge thicknesses of sedimentary strata. If the uplift is of a broad regional nature or the uplifted strata remain relatively undeformed and sediments deposited after the uplift are not preserved, the magnitude of uplift and subsequent erosion may be difficult to quantify. This may lead to misinterpretation or omission of chapters of geologic history of a region. Fortunately, a number of indirect methods can be used to infer the thicknesses of missing strata and reconstruct the geologic history. Our book titled "Thick Post-Devonian Sediment Cover Over New York State: Evidence from Fluid-Inclusion, Organic Maturation, Clay Diagenesis and Stable Isotope Studies" uses four techniques of paleotemperature measurements in sedimentary rocks in order to determine burial depths of the existing Paleozoic strata in New York State. Since every technique has its own analytical and interpretative uncertainties, the use of four techniques allowed us to place a better constraint on our results. We show how regionally extensive paleotemperature data can be used to estimate the thicknesses of strata lost from an uplifted sedimentary basin. We also provide a tentative tectonic-, paleogeographic- and depositional history of New York State after the Devonian when the missing strata were deposited...

Description / Table of Contents: PREFACE In recent years, there has been increasing interest from geoscientists in potassic igneous rocks. Academic geoscientists have been interested in their petrogenesis and their potential value in defining the tectonic setting of the terranes into which they were intruded, and exploration geoscientists have become increasingly interested in the association of these rocks with major epithermal gold and porphyry gold-copper deposits. Despite this current interest, there is no comprehensive textbook that deals with these aspects of potassic igneous rocks. This book redresses this situation by elucidating the characteristic features of potassic (high-K) igneous rocks, erecting a hierarchical scheme that allows interpretation of their tectonic setting using whole-rock geochemistry, and investigating their associations with a variety of gold and copper-gold deposits, worldwide. About twothirds of the book is based on a PhD thesis by Dr Daniel MOiler which was produced at the Key Centre for Strategic Mineral Deposits within the Department of Geology and Geophysics at The University of Western Australia under the supervision of Professor David Groves, the late Dr Nick Rock, Professor Eugen Stumpfl, Dr Wayne Taylor, and Dr Brendon Griffin. The remainder of the book was compiled from the literature using the collective experience of the two authors. The book is dedicated to the memory of Dr Rock who initiated the research project but died before its completion...

Description / Table of Contents: PREFACE The sedimentology of Chalk describes processes that caused the rhythmic vertical variation in grain size, structures and authigenic mineral concentrations in Late Cretaceous and Early Tertiary, subtropical, shallow marine, fine-grained, detrital bioclastic carbonates of northwest Europe. In particular, attention is paid to the sedimentology of the Tuffaceous Chalk of Maaslricht (The Netherlands), a coarsegrained variety of Chalk that resembles the Chalk (coccolithic mudstones) as well as modern shallow marine carbonate sands. Numerical models are presented that enable the simulation of the genesis of flint nodule layers, hardgrounds and complex wavy bedded sequences, such as the K/T boundary sequence of Stevns Klint (Denmark). The aim of this book is to show how depositional and early diagenetic features, which are observed in small-scale Chalk outcrops, can be used to reconstruct the large-scale dynamics of the northwest European continent during the Late Cretaceous and Early Tertiary...