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Título: | Grounding zone wedges, Kveithola Trough (NW Barents Sea) |
Autor: | Rebesco, Michele; Urgeles, Roger CSIC ORCID ; Llopart, Jaume CSIC ORCID ; Camerlenghi, Angelo | Fecha de publicación: | 1-may-2014 | Editor: | European Geosciences Union | Citación: | Geophysical Research Abstracts 16: EGU2014-16840 (2014) | Resumen: | Swath bathymetry within Kveithola Trough (NW Barents Sea) shows a seafloor characterized by E-W trending megascale glacial lineations (MSGLs) overprinted by transverse Grounding Zone Wedges (GZWs), which give the trough a stair profile (Rebesco et al., 2011). GZWs are formed by deposition of subglacial till at temporarily stable ice-stream fronts in between successive episodic retreats (Rüther et al., 2012; Bjarnadóttir et al., 2012). Sub-bottom data show that present-day morphology is largely inherited from palaeo-seafloor topography of GZWs, which is draped by a deglacial to early Holocene glaciomarine sediments (about 15 m thick). The ice stream that produced such subglacial morphology was flowing from East to West inside Kveithola Trough during Last Glacial Maximum. Its rapid retreat was likely associated with progressive lift-offs, and successive rapid melting of the grounded ice, induced by the eustatic sea-level rise (Lucchi et al., 2013) | Descripción: | Rebesco, Michele ... et al.-- European Geosciences Union General Assembly 2014 (EGU2014), 27 april - 2 may 2014, Vienna, Austria.-- 1 page | Versión del editor: | http://meetingorganizer.copernicus.org/EGU2014/posters/14252 | URI: | http://hdl.handle.net/10261/115147 | ISSN: | 1607-7962 |
Aparece en las colecciones: | (ICM) Comunicaciones congresos |
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