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  • 1
    Monograph available for loan
    Monograph available for loan
    Glaciated margins : the sedimentary and geophysical archive (2019)
    London : The Geological Society
    Associated volumes
    Details Availability
    Call number: 9/M 07.0421(475)
    In: Geological Society Special Publication
    Description / Table of Contents: Abstract Understanding the sedimentary and geophysical archive of glaciated margins is a complex task that requires integration and analysis of disparate sedimentological and geophysical data. Their analysis is vital for understanding the dynamics of past ice sheets and how they interact with their neighbouring marine basins, on timescales that cannot be captured by observations of the cryosphere today. As resources, sediments deposited on the inner margins of glaciated shelves also exhibit resource potential where more sand-dominated systems occur, acting as reservoirs for both hydrocarbons and water. This book surveys the full gamut of glaciated margins, from deep time (Neoproterozoic, Ordovician and Carboniferous–Permian) to modern high-latitude margins in Canada and Antarctica. This collection of papers is the first attempt to deliberately do this, allowing not only the similarities and differences between modern and ancient glaciated margins to be explored, but also the wide spectrum of their mechanisms of investigation to be probed. Together, these papers offer a high-resolution, spatially and temporally diverse blueprint of the depositional processes, ice sheet dynamics, and basin architectures of the world's former glaciated margins; a vital resource in advancing understanding of our present and future marine-terminating ice sheet margins.
    Type of Medium: Monograph available for loan
    Pages: 288 Seiten , Illustrationen
    ISBN: 978-1-78620-397-7
    Series Statement: Geological Society Special Publication 475
    URL: https://sp.lyellcollection.org/content/475/1
    Language: English
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
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    Subsurface Sand Remobilization and Injection (2019)
    London : The Geological Society
    Details
    Keywords: subsurface ; sand ; sandstone ; facies
    Description / Table of Contents: 10 September 2019 --- Basement-hosted sand injectites: use of field examples to advance understanding of hydrocarbon reservoirs in fractured crystalline basement rocks / C. S. Siddoway, G. Palladino, G. Prosser, D. Freedman and W. Cody Duckworth / Geological Society, London, Special Publications, 493, 10 September 2019, https://doi.org/10.1144/SP493-2018-140 --- 25 July 2019 --- Development of the Brimmond Sand Fairway / L. A. van Oorschot, J. R. Pyle, G. W. Byerley and P. T. S. Rose / Geological Society, London, Special Publications, 493, https://doi.org/10.1144/SP493-2017-350 --- The Tumey Giant Injection Complex, Tumey Hill, California (USA) / G. Zvirtes, A. Hurst, R. P. Philipp, G. Palladino and A. Grippa / Geological Society, London, Special Publications, 493, https://doi.org/10.1144/SP493-2019-3 --- 12 July 2019 --- Reconstruction of subsurface sand remobilization from seismic data / Andreas W. Laake / Geological Society, London, Special Publications, 493, https://doi.org/10.1144/SP493-2017-306 --- 3 July 2019 --- Sand Pipe Formation by liquefaction and sand injection: Examples from Kodachrome Basin State Park, Utah, USA / Ian Davison / Geological Society, London, Special Publications, 493, https://doi.org/10.1144/SP493-2017-349 --- Relationship between bowl-shaped clastic injectites and parent sand depletion; implications for their scale invariant morphology and composition / S. L. Cobain, D. M. Hodgson, J. Peakall and S. Y. Silcock / Geological Society, London, Special Publications, 493, https://doi.org/10.1144/SP493-2018-80
    Edition: online first
    URL: https://sp.lyellcollection.org/online-first/493
    Language: English
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  • 3
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    Glaciated Margins: The Sedimentary and Geophysical Archive (2019)
    London : The Geological Society
    Details
    Keywords: cryosphere ; glaciology ; sedimentology ; geophysics
    Description / Table of Contents: An introduction to glaciated margins: the sedimentary and geophysical archive / D. P. Le Heron, K. A. Hogan, E. R. Phillips, M. Huuse, M. E. Busfield and A. G. C. Graham / Geological Society, London, Special Publications, 475, 1-8, 30 January 2019, https://doi.org/10.1144/SP475.12 --- Glacio-marine iron formation deposition in a c. 700 Ma glaciated margin: insights from the Chuos Formation, Namibia / Maxwell A. Lechte, Malcolm W. Wallace and Karl-Heinz Hoffmann / Geological Society, London, Special Publications, 475, 9-34, 16 March 2018, https://doi.org/10.1144/SP475.2 --- A tale of two rift shoulders, and two ice masses: the Cryogenian glaciated margin of Death Valley, California / D. P. Le Heron, M. E. Busfield, D. O. Ali, T. Vandyk and S. Tofaif / Geological Society, London, Special Publications, 475, 35-52, 27 July 2018, https://doi.org/10.1144/SP475.11 --- Zarqa megafacies: widespread subglacial deformation in the Sarah Formation of Saudi Arabia and implications for the sequence stratigraphy of the Hirnantian glaciation / John Melvin / Geological Society, London, Special Publications, 475, 53-80, 7 March 2018, https://doi.org/10.1144/SP475.6 --- Development of a palaeovalley complex on a Late Ordovician glaciated margin in NW Saudi Arabia / S. Tofaif, D. P. Le Heron and J. Melvin / Geological Society, London, Special Publications, 475, 81-107, 6 June 2018, https://doi.org/10.1144/SP475.8 --- Depositional model for the distal Ordovician glaciated margin of Jordan; implications for the reservoir potential of the Risha Formation / J. Philip P. Hirst and Maher Khatatneh / Geological Society, London, Special Publications, 475, 109-129, 1 March 2018, https://doi.org/10.1144/SP475.4 --- Sedimentary record of Early Permian deglaciation in southern Gondwana from the Falkland Islands / Kate Horan, Philip Stone and Simon J. Crowhurst / Geological Society, London, Special Publications, 475, 131-147, 19 March 2018, https://doi.org/10.1144/SP475.1 --- Deglacial sequences and glacio-isostatic adjustment: Quaternary compared with Ordovician glaciations / Pierre Dietrich, Jean-François Ghienne, Patrick Lajeunesse, Alexandre Normandeau, Rémy Deschamps and Philippe Razin / Geological Society, London, Special Publications, 475, 149-179, 14 May 2018, https://doi.org/10.1144/SP475.9 --- Sedimentary processes and facies on a high-latitude passive continental margin, Wilkes Land, East Antarctica / Sandra Passchier, Daniel J. Ciarletta, Victor Henao and Vicky Sekkas / Geological Society, London, Special Publications, 475, 181-201, 16 March 2018, https://doi.org/10.1144/SP475.3 --- Processes influencing differences in Arctic and Antarctic trough mouth fan sedimentology / Jenny Gales, Claus-Dieter Hillenbrand, Rob Larter, Jan Sverre Laberg, Martin Melles, Sara Benetti and Sandra Passchier / Geological Society, London, Special Publications, 475, 203-221, 23 March 2018, https://doi.org/10.1144/SP475.7 --- Seismic and geomorphic records of Antarctic Ice Sheet evolution in the Ross Sea and controlling factors in its behaviour / John B. Anderson, Lauren M. Simkins, Phillip J. Bart, Laura De Santis, Anna Ruth W. Halberstadt, Elisabetta Olivo and Sarah L. Greenwood / Geological Society, London, Special Publications, 475, 223-240, 17 April 2018, https://doi.org/10.1144/SP475.5 --- Late Wisconsinan grounding zones of the Laurentide Ice Sheet margin off the Québec North Shore (NW Gulf of St Lawrence) / P. Lajeunesse, P. Dietrich and J.-F. Ghienne / Geological Society, London, Special Publications, 475, 241-259, 25 June 2018, https://doi.org/10.1144/SP475.10 --- The glacier-influenced marine record on high-latitude continental margins: synergies between modern, Quaternary and ancient evidence / J. A. Dowdeswell, K. A. Hogan and D. P. Le Heron / Geological Society, London, Special Publications, 475, 261-279, 29 January 2019, https://doi.org/10.1144/SP475.13
    Pages: Online-Ressource (288 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 9781786203977
    URL: https://sp.lyellcollection.org/content/475/1
    Language: English
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  • 4
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    Application of outcrop analogues in successful exploration of a sand injection complex, Volund Field, Norwegian North Sea (2015)
    Geological Society (of London)
    Details
    Publication Date: 2015-12-18
    Description: Identification and exploration drilling of the Volund Field as part of a sand injection complex is the first example of deliberate targeting of sandstone intrusions in oil exploration. Outcrop data were an important element in the process of constraining the uncertainty associated with reservoir presence and connectivity. A strong lobby against the relevance of sand injectites as exploration targets, and significant uncertainty associated with sub-surface sand injectite analogues associated with existing oil fields, combined to discourage and down-grade Volund's prospectivity. Few outcrop studies provided data of relevance to exploration of sandstone intrusions and original outcrop data were utilized in evaluation of Volund. Sills and saucer-shaped sandstone intrusions are the most common reservoir units observed at outcrop and similar features were identified in the 3D seismic across the Volund Field prospect. A large-scale sand injection origin rather than a depositional origin was proposed. Outcrops of sandstone intrusions demonstrated excellent reservoir quality in composite sandstone bodies that cross-cut depositional bedding. High-quality reservoirs with excellent vertical and lateral connectivity are observed and used to support the prediction of similar quality reservoirs in the Volund prospect.
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
    Published by Geological Society (of London)
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  • 5
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    An introduction to glaciated margins: the sedimentary and geophysical archive (2019)
    Geological Society of London
    Details
    Publication Date: 2019
    Description: 〈p〉A glaciated margin is a continental margin that has been occupied by a large ice mass, such that glacial processes and slope processes conspire to produce a thick sedimentary record. Ice masses take an active role in sculpting, redistributing and reorganizing the sediment that they erode on the continental shelf, and act as a supply route to large fan systems (e.g. trough mouth fans, submarine fans) on the continental slope and continental rise. To many researchers, the term ‘glaciated margin’ is synonymous with modern day areas fringing Antarctica and the Arctic shelf systems, yet the geological record contains ancient examples ranging in age from Precambrian to Cenozoic. In the pre-Pleistocene record, there is a tendency for the configuration of the tectonic plates to become increasingly obscure with age. For instance, in the Neoproterozoic record, not everyone agrees on the location of rift margins and some fundamental continental boundaries remain unclear. Given these issues, this introductory paper has two simple aims: (1) to provide a brief commentary of relevant Geological Society publications on glaciated margins, with the landmark papers highlighted and (2) to explain the contents of this volume.〈/p〉
    Print ISSN: 0375-6440
    Electronic ISSN: 2041-4927
    Topics: Geosciences
    Published by Geological Society of London
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  • 6
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    Extensive marine-terminating ice sheets in Europe from 2.5 million years ago (2018)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2018-06-14
    Description: Geometries of Early Pleistocene [2.58 to 0.78 million years (Ma) ago] ice sheets in northwest Europe are poorly constrained but are required to improve our understanding of past ocean-atmosphere-cryosphere coupling. Ice sheets are believed to have changed in their response to orbital forcing, becoming, from about 1.2 Ma ago, volumetrically larger and longer-lived. We present a multiproxy data set for the North Sea, extending to over a kilometer below the present-day seafloor, which demonstrates spatially extensive glaciation of the basin from the earliest Pleistocene. Ice sheets repeatedly entered the North Sea, south of 60°N, in water depths of up to ~250 m from 2.53 Ma ago and subsequently grounded in the center of the basin, in deeper water, from 1.87 Ma ago. Despite lower global ice volumes, these ice sheets were near comparable in spatial extent to those of the Middle and Late Pleistocene but possibly thinner and moving over slippery (low basal resistance) beds.
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
    Published by American Association for the Advancement of Science (AAAS)
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  • 7
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    Deriving relationships between diapir spacing and salt-layer thickness in the Southern North Sea (2018)
    Geological Society (of London)
    Details
    Publication Date: 2018-02-28
    Description: In analytical models of salt diapirism, the initial salt-layer thickness and the post-deformation spacing of salt structures are key parameters. Here, 3D seismic data from The Netherlands offshore has enabled these parameters to be measured over large areas which can then be compared with model predictions. Estimates of the original salt-layer thickness were obtained by spatially filtering present thickness, using filters with varied spatial scales that remove local effects. Loss of evaporite minerals by dissolution or erosion during exposure, cannot be ruled out and, as such, thicknesses are minima. Spacing estimates were derived in two dimensions by locating the minimum separation of lines representing ridgelines of diapirs/walls. Because the length scale of spatial filtering was chosen based on the dependent variable, diapir spacing, the results are non-unique. Nevertheless, choosing an apparently optimal filter length of 50 km, a ratio between diapir spacing and original thickness from 12 to 20 is defined. This ratio is greater than has been reported for the pillow province of the UK North Sea Quadrant 44, which is as expected if pillows evolve into diapirs with progressive halokinetic deformation. This work is key to understanding the evolution of salt displacement, a necessity for unlocking remaining hydrocarbon resources.
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
    Published by Geological Society (of London)
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  • 8
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    A Persistent Norwegian Atlantic Current Through the Pleistocene Glacials (2018)
    American Geophysical Union
    Details
    Publication Date: 2018-06-05
    Description: Changes in ocean-circulation regimes in the northern North Atlantic and the Nordic Seas may affect not only the Arctic but potentially hemispheric or even global climate. Therefore, unraveling the long-term evolution of the North Atlantic Current-Norwegian Atlantic Current system through the Pleistocene glaciations could yield useful information and climatological context for understanding contemporary changes. In this work, ~50,000 km2 of 3-D seismic reflection data are used to investigate the Pleistocene stratigraphy for evidence of paleo-oceanographic regimes on the mid-Norwegian margin since 2.58 Ma. Across 33 semicontinuous regional paleo-seafloor surfaces ~17,500 iceberg scours have been mapped. This mapping greatly expands our spatiotemporal understanding of currents and iceberg presence in the eastern Nordic Seas. The scours display a dominant southwest-northeast trend that complements previous sedimentological and numerical modeling studies that suggest northward-flowing currents in the Norwegian Sea during the Pleistocene. This paleo-oceanographic study suggests that through many of the Pleistocene glaciations, the location of surface ocean currents in the Norwegian Sea and, by extension, the eastern North Atlantic, were broadly similar to the present. ©2018. The Authors.
    Print ISSN: 0094-8276
    Electronic ISSN: 1944-8007
    Topics: Geosciences , Physics
    Published by American Geophysical Union
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  • 9
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    Ice stream reorganization and glacial retreat on the northwest Greenland shelf (2017)
    American Geophysical Union
    Details
    Publication Date: 2017-08-12
    Description: Understanding conditions at the grounding-line of marine-based ice sheets is essential for understanding ice sheet evolution. Offshore northwest Greenland, knowledge of the Last Glacial Maximum (LGM) ice sheet extent in Melville Bugt was previously based on sparse geological evidence. This study uses multibeam bathymetry, combined with 2-D and 3-D seismic reflection data, to present a detailed landform record from Melville Bugt. Seabed landforms include mega-scale glacial lineations, grounding-zone wedges, iceberg scours, and a lateral shear margin moraine, formed during the last glacial cycle. The geomorphology indicates that the LGM ice sheet reached the shelf edge before undergoing flow reorganization. After retreat of ~80 km across the outer shelf, the margin stabilized in a mid-shelf position, possibly during the Younger Dryas (12.9–11.7 ka). The ice sheet then decoupled from the seafloor and retreated to a coast-proximal position. This landform record provides an important constraint on deglaciation history offshore northwest Greenland. ©2017. The Authors.
    Print ISSN: 0094-8276
    Electronic ISSN: 1944-8007
    Topics: Geosciences , Physics
    Published by American Geophysical Union
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  • 10
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    An introduction to glaciated margins: the sedimentary and geophysical archive (2019)
    Geological Society of London
    Details
    Publication Date: 2019-01-01
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
    Published by Geological Society of London
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