Modern sedimentary dynamics and Quaternary glacial history of Marguerite Bay, Antarctic Peninsula
Piston cores and single-channel seismic data were acquired in Marguerite Bay, Antarctic Peninsula, to determine modern sedimentary conditions and recent glacial history of the area. Seismic data in the bay shows a rugged seafloor, having numerous deep troughs and a marked lack of sediment cover, wit...
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ftriceuniv:oai:scholarship.rice.edu:1911/13292 2023-05-15T13:44:55+02:00 Modern sedimentary dynamics and Quaternary glacial history of Marguerite Bay, Antarctic Peninsula Kennedy, Douglas Stokes Anderson, John B. 1988 211 p. application/pdf https://hdl.handle.net/1911/13292 eng eng Kennedy, Douglas Stokes. "Modern sedimentary dynamics and Quaternary glacial history of Marguerite Bay, Antarctic Peninsula." (1988) Master’s Thesis, Rice University. https://hdl.handle.net/1911/13292 . https://hdl.handle.net/1911/13292 Thesis Geol. 1988 Kennedy Geology Thesis Text 1988 ftriceuniv 2022-08-09T20:54:21Z Piston cores and single-channel seismic data were acquired in Marguerite Bay, Antarctic Peninsula, to determine modern sedimentary conditions and recent glacial history of the area. Seismic data in the bay shows a rugged seafloor, having numerous deep troughs and a marked lack of sediment cover, with a thin layer of sediment over crystalline basement or older glacial deposits. Modern sedimentation consists predominantly of diatomaceous muds; ice-rafted debris is unimportant. These sediments show wind-driven or marine current influence. Piston cores are topped by diatomaceous muds, which are underlain by terrigenous muds and muddy gravels that were deposited beneath an ice shelf. Basal till sediments were recovered, reflecting deposition by a grounded marine ice sheet. A reconstruction of the glacial history of Marguerite Bay since the last glacial maximum shows grounded ice filling the bay in late Wisconsin time; rising sea level caused slow ice margin retreat and existence of an ice shelf throughout the Holocene. An ice margin recessional facies model has been developed. Thesis Antarc* Antarctic Antarctic Peninsula Ice Sheet Ice Shelf Rice University: Digital Scholarship Archive Antarctic Antarctic Peninsula Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) |
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Open Polar |
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Rice University: Digital Scholarship Archive |
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ftriceuniv |
language |
English |
topic |
Geology |
spellingShingle |
Geology Kennedy, Douglas Stokes Modern sedimentary dynamics and Quaternary glacial history of Marguerite Bay, Antarctic Peninsula |
topic_facet |
Geology |
description |
Piston cores and single-channel seismic data were acquired in Marguerite Bay, Antarctic Peninsula, to determine modern sedimentary conditions and recent glacial history of the area. Seismic data in the bay shows a rugged seafloor, having numerous deep troughs and a marked lack of sediment cover, with a thin layer of sediment over crystalline basement or older glacial deposits. Modern sedimentation consists predominantly of diatomaceous muds; ice-rafted debris is unimportant. These sediments show wind-driven or marine current influence. Piston cores are topped by diatomaceous muds, which are underlain by terrigenous muds and muddy gravels that were deposited beneath an ice shelf. Basal till sediments were recovered, reflecting deposition by a grounded marine ice sheet. A reconstruction of the glacial history of Marguerite Bay since the last glacial maximum shows grounded ice filling the bay in late Wisconsin time; rising sea level caused slow ice margin retreat and existence of an ice shelf throughout the Holocene. An ice margin recessional facies model has been developed. |
author2 |
Anderson, John B. |
format |
Thesis |
author |
Kennedy, Douglas Stokes |
author_facet |
Kennedy, Douglas Stokes |
author_sort |
Kennedy, Douglas Stokes |
title |
Modern sedimentary dynamics and Quaternary glacial history of Marguerite Bay, Antarctic Peninsula |
title_short |
Modern sedimentary dynamics and Quaternary glacial history of Marguerite Bay, Antarctic Peninsula |
title_full |
Modern sedimentary dynamics and Quaternary glacial history of Marguerite Bay, Antarctic Peninsula |
title_fullStr |
Modern sedimentary dynamics and Quaternary glacial history of Marguerite Bay, Antarctic Peninsula |
title_full_unstemmed |
Modern sedimentary dynamics and Quaternary glacial history of Marguerite Bay, Antarctic Peninsula |
title_sort |
modern sedimentary dynamics and quaternary glacial history of marguerite bay, antarctic peninsula |
publishDate |
1988 |
url |
https://hdl.handle.net/1911/13292 |
long_lat |
ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) |
geographic |
Antarctic Antarctic Peninsula Marguerite Marguerite Bay |
geographic_facet |
Antarctic Antarctic Peninsula Marguerite Marguerite Bay |
genre |
Antarc* Antarctic Antarctic Peninsula Ice Sheet Ice Shelf |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ice Sheet Ice Shelf |
op_relation |
Kennedy, Douglas Stokes. "Modern sedimentary dynamics and Quaternary glacial history of Marguerite Bay, Antarctic Peninsula." (1988) Master’s Thesis, Rice University. https://hdl.handle.net/1911/13292 . https://hdl.handle.net/1911/13292 Thesis Geol. 1988 Kennedy |
_version_ |
1766208542368333824 |