ALBERT

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: This Special Publication arises from the UNESCO-sponsored IGCP 586-Y project ‘The tectonics and geomorphology of the Andes (32°–34°S): interplay between short-term and long-term processes’. It includes state-of-the-art reviews and original articles from a multidisciplinary perspective that investigate the complex interactions of tectonics and surface processes in the subduction-related orogen of the Andes of central Chile and Argentina (c. 27°–39°S). It aims to improve our understanding of tectonic and landscape evolution of the Andean range at different time scales, as well as the mutual relationship between internal and external mechanisms in Cenozoic deformation, mountain building, topographic evolution, basin development and mega-landslides occurrence across the flat slab to normal subduction segments. The geodynamic processes of the Andes of central Chile and Argentina are analysed from a number of subdisciplines of the Earth sciences, including tectonics, petrology, geophysics, geochemistry, structural geology, geomorphology, engineering geology, stratigraphy and sedimentology.

Description / Table of Contents: Discovery of the Arbroath, Montrose and Forties fields initiated intensive exploration of the Tertiary deep-marine play in the North Sea region. Subsequent discoveries demonstrated the success of this play and the geological diversity of the depositional systems. The play is now mature and in many areas the remaining exploration potential is likely to be dominated by small, subtle traps with a major component of stratigraphic trapping. Economically marginal discoveries need an in-depth understanding of subsurface uncertainty to mitigate risk with limited appraisal wells. Mature fields require detailed geological understanding in the search for the remaining oil. This volume focuses on the regional depositional setting of these deep-marine systems, providing a stratigraphic and palaeogeographical context for exploration, and development case histories that outline the challenges of producing from these reservoirs. The fields are arranged around the production life cycle, describing the changing needs of geological models as the flow of static and dynamic data refines geological understanding and defines the nature of new opportunities as fields mature.

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: Our understanding of the physical and chemical processes that regulate the evolution of magmatic systems has improved tremendously since the foundations were laid down 100 years ago by Bowen. The concept of crustal magma chambers has progressively evolved from molten-rock vats to thermally, chemically and physically heterogeneous reservoirs that are kept active by the periodic injection of magma. This new model, while more complex, provides a better framework to interpret volcanic activity and decipher the information contained in intrusive and extrusive rocks. Igneous/metamorphic petrology, geochemistry, geochronology and numerical modelling all contributed towards this new picture of crustal magmatic systems. This book provides an overview of the wide range of approaches that can nowadays be used to understand the chemical, physical and temporal evolution of magmatic and volcanic systems.

Description / Table of Contents: The practical application of structural geology in industry is varied and diverse; it is relevant at all scales, from plate-wide screening of new exploration areas down to fluid-flow behaviour along individual fractures. From an industry perspective, good structural practice is essential since it feeds into the quantification and recovery of reserves and ultimately underpins commercial investment choices. Many of the fundamental structural principles and techniques used by industry can be traced back to the academic community, and this volume aims to provide insights into how structural theory translates into industry practice. Papers in this publication describe case studies and workflows that demonstrate applied structural geology, covering a spread of topics including trap definition, fault seal, fold-and-thrust belts, fractured reservoirs, fluid flow and geomechanics. Against a background of evolving ideas, new data types and advancing computational tools, the volume highlights the need for structural geologists to constantly re-evaluate the role they play in solving industrial challenges.

Description / Table of Contents: Geothermal energy has been harnessed for recreational uses for millennia, but only for electricity generation for a little over a century. Although geothermal is unique amongst renewables for its baseload and renewable heat provision capabilities, uptake continues to lag far behind that of solar and wind. This is mainly attributable to (i) uncertainties over resource availability in poorly-explored reservoirs and (ii) the concentration of full-lifetime costs into early-stage capital expenditure (capex). Recent advances in reservoir characterization techniques are beginning to narrow the bounds of exploration uncertainty, both by improving estimates of reservoir geometry and properties, and by providing pre-drilling estimates of temperature at depth. Advances in drilling technologies and management have potential to significantly lower initial capex, while operating expenditure is being further reduced by more effective reservoir management—supported by robust models—and increasingly efficient energy conversion systems (flash, binary and combined-heat-and-power). Advances in characterization and modelling are also improving management of shallow low-enthalpy resources that can only be exploited using heat-pump technology. Taken together with increased public appreciation of the benefits of geothermal, the technology is finally ready to take its place as a mainstream renewable technology, exploited far beyond its traditional confines in the world’s volcanic regions.