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The variety and distribution of submarine glacial landforms and implications for ice-sheet reconstruction

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اقرأ أكثر حفظ في قائمتي
  • المؤلفون: Dowdeswell, J. A.; Canals, M.; Jakobsson, M.; Todd, B. J.; Dowdeswell, E. K.; Hogan, K. A.
  • المصدر:
    In: Atlas of submarine glacial landforms. , ed. by Dowdeswell, J. A., Canals, M., Jakobsson, M., Todd, B. J., Dowdeswell, E. K. and Hogan, K. A. Geological Society London Memoirs, 46 . Geological Society, London, pp. 519-552.
  • نوع التسجيلة:
    Electronic Resource
  • الدخول الالكتروني :
    http://oceanrep.geomar.de/36553/
    http://dx.doi.org/10.1144/M46.182
    http://oceanrep.geomar.de/36553
  • معلومة اضافية
    • Publisher Information:
      Geological Society 2016
    • نبذة مختصرة :
      Glacimarine processes affect about 20% of the global ocean today, and this area expanded considerably under cyclical full-glacial conditions during the Quaternary (Fig. 1) (Dowdeswell et al. 2016b). Many of the submarine landforms produced at the base and margin of past ice sheets remain well preserved on the seafloor in fjords and on high-latitude continental shelves after the retreat of the ice that produced them. These glacial landforms, protected from subaerial erosion and beneath wave-base and tidal currents in water that is often hundreds of metres deep, are gradually buried by both hemipelagic and glacimarine sedimentation; they may be preserved over long periods in the geological record if palaeo-continental shelves are not reworked by subsequent glacier advances or bottom currents (Dowdeswell et al. 2007). This means that, first, submarine glacial landforms can be observed at or close to the modern seafloor after retreat of the last great ice sheets from their most recent Quaternary maximum about 18–20 000 years ago using swath-bathymetric mapping systems and, secondly, buried glacial landforms may also be identified and examined within glacial-sedimentary sequences from Quaternary and earlier ice ages using seismic-reflection methods.
    • الموضوع:
      Book chapter; NonPeerReviewed
    • Availability:
      Open access content. Open access content
      info:eu-repo/semantics/closedAccess
    • Other Numbers:
      DEOZE oai:oceanrep.geomar.de:36553
      10.1144/M46.183
      Dowdeswell, J. A., Canals, M., Jakobsson, M., Todd, B. J., Dowdeswell, E. K. and Hogan, K. A. (2016) The variety and distribution of submarine glacial landforms and implications for ice-sheet reconstruction. In: Atlas of submarine glacial landforms. , ed. by Dowdeswell, J. A., Canals, M., Jakobsson, M., Todd, B. J., Dowdeswell, E. K. and Hogan, K. A.. Geological Society London Memoirs, 46 . Geological Society, London, pp. 519-552. DOI 10.1144/M46.183 .
      1290686332
    • Contributing Source:
      HELMHOLTZ CENTRE FOR OCEAN RESE KIEL
      From OAIster®, provided by the OCLC Cooperative.
    • الرقم المعرف:
      edsoai.on1290686332
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