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  • 1
    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
    Language: English
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    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
    Language: English
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  • 3
    Publication Date: 2014-04-25
    Description: The Cryogenian record of South Australia includes the type region of the Sturtian glaciation, the oldest of three pan-global icehouse intervals during the Neoproterozoic. Data are presented from previously little described sections at Holowilena Creek, Oladdie Creek and Hillpara Creek in the central and southern Flinders Ranges, where five facies associations are recognized. These are (1) diamictite and conglomerate, (2) interbedded heterolithic deposits, (3) hummocky cross-stratified sandstone, (4) lonestone-bearing siltstone, and (5) ferruginous siltstone and sandstone. The succession reveals significant lateral and vertical facies variation, which is linked to a complex inherited palaeotopography and distance from the sediment source. Repeated stratigraphic occurrences of striated clasts and abundant ice-rafted debris strongly support recurrent glacial influence on sedimentation. The intercalation of gravitationally reworked diamictites, dropstone-bearing siltstone and dropstone-free siltstone testifies to dynamic sedimentation within a periodically glacially influenced subaqueous environment. Sequence stratigraphic analysis identifies four glacial advance systems tracts, separated by three glacial retreat systems tracts, wherein hummocky cross-stratified sandstones attest to open water conditions. These findings support dynamic ice sheet behaviour in South Australia, and provide clear evidence for repeated intra-Sturtian ice sheet recession.
    Print ISSN: 0016-7649
    Topics: Geosciences
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  • 4
    Publication Date: 2014-07-01
    Description: The Kingston Peak Formation is a diamictite-bearing succession that crops out in the Death Valley region, California, USA. An exceptionally thick (〉1.5 km) outcrop belt in its type area (the Kingston Range) provides clear insights into the dynamics of mid-Cryogenian (‘Sturtian’) ice sheets in Laurentia. Seven detailed logs allow the lateral and vertical distribution of facies associations to be assessed. We recognize (1) diamictite facies association (ice-proximal glacigenic debris flows), (2) lonestone-bearing facies association (ice-marginal hemipelagic deposits and low-density gravity flows with iceberg rafting), (3) pebble to boulder conglomerate facies association (ice-proximal cogenetic glacigenic debris flows and high-density turbidites), (4) megaclast facies association (olistostrome and hemipelagic sediments subject to ice-rafting), and (5) interbedded heterolithics facies association (low-density turbidites and hemipelagic deposits). The stratigraphic motif allows three glacial cycles to be inferred across the range. Ice-minimum conditions interrupting the Kingston Peak succession are associated with the development of an olistostrome complex, succeeded by a thick accumulation of boulder conglomerates deposited during ice readvance. The data testify to a strong glacial influence on sedimentation within this ancient subaqueous succession, and to highly dynamic ice sheet behaviour with clear glacial cycles during the Sturtian glaciation.
    Print ISSN: 0016-7649
    Topics: Geosciences
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  • 5
    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
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  • 6
    Publication Date: 2018
    Description: 〈p〉The Death Valley area of California, USA, exposes an outstanding record of a Neoproterozoic (Cryogenian) glaciated margin: the Kingston Peak Formation. Despite the quality of the exposure, however, the outcrops of glaciogenic strata are fragmentary, forming isolated, laterally offset outcrop belts at the western extremity of the Basin and Range province. Excellent evidence for glacially modulated sedimentation includes (1) ice-rafted dropstones in most ranges, (2) thick diamictites bearing a variety of exotic (extrabasinal) clasts, (3) striated clasts and (4) local occurrences of glacitectonic deformation structures at the basin margins. In tandem with this, there is a distinct signature of slope collapse processes in many ranges, including (1) up to kilometre-scale olistoliths, (2) extensional growth fault arrays, (3) dramatic proximal-distal thickness changes and (4) basalt occurrences. New sedimentological observations reinforce long-held views of rifting superimposed on glaciation (or vice versa), with both processes contributing to a complex record whereby rift and glacial processes vie for stratigraphic supremacy. We consider that a mechanism of diamictite accumulation in a series of rift-shoulder minibasins produced greatly contrasting successions across the Death Valley area, under the incontrovertible influence of hinterland ice sheets.〈/p〉
    Print ISSN: 0375-6440
    Electronic ISSN: 2041-4927
    Topics: Geosciences
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  • 7
    Publication Date: 2018-07-29
    Description: The Death Valley area of California, USA, exposes an outstanding record of a Neoproterozoic (Cryogenian) glaciated margin: the Kingston Peak Formation. Despite the quality of the exposure, however, the outcrops of glaciogenic strata are fragmentary, forming isolated, laterally offset outcrop belts at the western extremity of the Basin and Range province. Excellent evidence for glacially modulated sedimentation includes (1) ice-rafted dropstones in most ranges, (2) thick diamictites bearing a variety of exotic (extrabasinal) clasts, (3) striated clasts and (4) local occurrences of glacitectonic deformation structures at the basin margins. In tandem with this, there is a distinct signature of slope collapse processes in many ranges, including (1) up to kilometre-scale olistoliths, (2) extensional growth fault arrays, (3) dramatic proximal-distal thickness changes and (4) basalt occurrences. New sedimentological observations reinforce long-held views of rifting superimposed on glaciation (or vice versa), with both processes contributing to a complex record whereby rift and glacial processes vie for stratigraphic supremacy. We consider that a mechanism of diamictite accumulation in a series of rift-shoulder minibasins produced greatly contrasting successions across the Death Valley area, under the incontrovertible influence of hinterland ice sheets.
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
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  • 8
  • 9
    Publication Date: 2014-01-30
    Print ISSN: 0016-7649
    Topics: Geosciences
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  • 10
    Publication Date: 2018-07-27
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
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