Contrasting Sub-ice Shelf, Subglacial and Glaciomarine Deposition at the Ross Ice Shelf Edge: Implications for the Glacial History of the Ross Sea Region, Antarctica
Data from cores collected at sites located in front of and beneath the Ross Ice Shelf (prior to 2000 and 2002 calving events) indicate that sub-ice shelf facies are characterized by silty, fine-grained sediment with reworked diatom species among modern assemblages. The presence of coarse material an...
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ftcarolinadr:cdr.lib.unc.edu:8910jv28m 2023-10-09T21:44:48+02:00 Contrasting Sub-ice Shelf, Subglacial and Glaciomarine Deposition at the Ross Ice Shelf Edge: Implications for the Glacial History of the Ross Sea Region, Antarctica Boyd, Lauren Winifred Emily College of Arts and Sciences, Department of Geological Sciences Bartek, Louis Robert 2008-12 https://doi.org/10.17615/3sag-3818 https://cdr.lib.unc.edu/downloads/d217qq32v?file=thumbnail https://cdr.lib.unc.edu/downloads/d217qq32v English eng https://doi.org/10.17615/3sag-3818 https://cdr.lib.unc.edu/downloads/d217qq32v?file=thumbnail https://cdr.lib.unc.edu/downloads/d217qq32v http://rightsstatements.org/vocab/InC/1.0/ Masters Thesis 2008 ftcarolinadr https://doi.org/10.17615/3sag-3818 2023-09-09T22:28:49Z Data from cores collected at sites located in front of and beneath the Ross Ice Shelf (prior to 2000 and 2002 calving events) indicate that sub-ice shelf facies are characterized by silty, fine-grained sediment with reworked diatom species among modern assemblages. The presence of coarse material and higher total abundances in sub-ice shelf facies is attributed to proximity to the ice shelf edge or grounding line. According to this research advection and mixing by currents plays a significant role in deposition in the Ross Sea sub-ice shelf region. Facies successions and geomorphic features in the western Ross Sea indicate a slow, punctuated retreat in which the grounding line passed southeast over the NBP03-01 site by 6,600 yrs B.P. Facies from the eastern Ross Sea cores suggest cyclicity in the movement of the grounding line prior to 10,100 yrs B.P. when it was located near the NBP03-06 site. Master Thesis Antarc* Antarctica Ice Shelf Ross Ice Shelf Ross Sea Carolina Digital Repository (UNC - University of North Carolina) Ross Ice Shelf Ross Sea |
institution |
Open Polar |
collection |
Carolina Digital Repository (UNC - University of North Carolina) |
op_collection_id |
ftcarolinadr |
language |
English |
description |
Data from cores collected at sites located in front of and beneath the Ross Ice Shelf (prior to 2000 and 2002 calving events) indicate that sub-ice shelf facies are characterized by silty, fine-grained sediment with reworked diatom species among modern assemblages. The presence of coarse material and higher total abundances in sub-ice shelf facies is attributed to proximity to the ice shelf edge or grounding line. According to this research advection and mixing by currents plays a significant role in deposition in the Ross Sea sub-ice shelf region. Facies successions and geomorphic features in the western Ross Sea indicate a slow, punctuated retreat in which the grounding line passed southeast over the NBP03-01 site by 6,600 yrs B.P. Facies from the eastern Ross Sea cores suggest cyclicity in the movement of the grounding line prior to 10,100 yrs B.P. when it was located near the NBP03-06 site. |
author2 |
College of Arts and Sciences, Department of Geological Sciences Bartek, Louis Robert |
format |
Master Thesis |
author |
Boyd, Lauren Winifred Emily |
spellingShingle |
Boyd, Lauren Winifred Emily Contrasting Sub-ice Shelf, Subglacial and Glaciomarine Deposition at the Ross Ice Shelf Edge: Implications for the Glacial History of the Ross Sea Region, Antarctica |
author_facet |
Boyd, Lauren Winifred Emily |
author_sort |
Boyd, Lauren Winifred Emily |
title |
Contrasting Sub-ice Shelf, Subglacial and Glaciomarine Deposition at the Ross Ice Shelf Edge: Implications for the Glacial History of the Ross Sea Region, Antarctica |
title_short |
Contrasting Sub-ice Shelf, Subglacial and Glaciomarine Deposition at the Ross Ice Shelf Edge: Implications for the Glacial History of the Ross Sea Region, Antarctica |
title_full |
Contrasting Sub-ice Shelf, Subglacial and Glaciomarine Deposition at the Ross Ice Shelf Edge: Implications for the Glacial History of the Ross Sea Region, Antarctica |
title_fullStr |
Contrasting Sub-ice Shelf, Subglacial and Glaciomarine Deposition at the Ross Ice Shelf Edge: Implications for the Glacial History of the Ross Sea Region, Antarctica |
title_full_unstemmed |
Contrasting Sub-ice Shelf, Subglacial and Glaciomarine Deposition at the Ross Ice Shelf Edge: Implications for the Glacial History of the Ross Sea Region, Antarctica |
title_sort |
contrasting sub-ice shelf, subglacial and glaciomarine deposition at the ross ice shelf edge: implications for the glacial history of the ross sea region, antarctica |
publishDate |
2008 |
url |
https://doi.org/10.17615/3sag-3818 https://cdr.lib.unc.edu/downloads/d217qq32v?file=thumbnail https://cdr.lib.unc.edu/downloads/d217qq32v |
geographic |
Ross Ice Shelf Ross Sea |
geographic_facet |
Ross Ice Shelf Ross Sea |
genre |
Antarc* Antarctica Ice Shelf Ross Ice Shelf Ross Sea |
genre_facet |
Antarc* Antarctica Ice Shelf Ross Ice Shelf Ross Sea |
op_relation |
https://doi.org/10.17615/3sag-3818 https://cdr.lib.unc.edu/downloads/d217qq32v?file=thumbnail https://cdr.lib.unc.edu/downloads/d217qq32v |
op_rights |
http://rightsstatements.org/vocab/InC/1.0/ |
op_doi |
https://doi.org/10.17615/3sag-3818 |
_version_ |
1779313708001918976 |