Marine geology and geophysics of the western South Orkney Plateau, Antarctica: Implications for Quaternary glacial history, tectonics, and paleoceanography
Piston cores and single-channel seismic profiles were collected from the western South Orkney Plateau to investigate glacial history, survey the seismic stratigraphy, and test the feasibility of paleoceanographic interpretation as a site survey for O.D.P Leg 113 drilling operations. Data reveal evid...
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ftriceuniv:oai:scholarship.rice.edu:1911/13288 2023-05-15T13:39:08+02:00 Marine geology and geophysics of the western South Orkney Plateau, Antarctica: Implications for Quaternary glacial history, tectonics, and paleoceanography Herron, Margaret Jane Anderson, John B. 1988 267 p. application/pdf https://hdl.handle.net/1911/13288 eng eng Herron, Margaret Jane. "Marine geology and geophysics of the western South Orkney Plateau, Antarctica: Implications for Quaternary glacial history, tectonics, and paleoceanography." (1988) Master’s Thesis, Rice University. https://hdl.handle.net/1911/13288 . https://hdl.handle.net/1911/13288 Thesis Geol. 1988 Herron Geology Physical oceanography Paleontology Thesis Text 1988 ftriceuniv 2022-08-09T20:49:34Z Piston cores and single-channel seismic profiles were collected from the western South Orkney Plateau to investigate glacial history, survey the seismic stratigraphy, and test the feasibility of paleoceanographic interpretation as a site survey for O.D.P Leg 113 drilling operations. Data reveal evidence for past grounded ice to 240 meters depth, and expanded floating ice cover over the entire plateau. Paleoceanographic interpretation is difficult because nearly 75% of slope cores are affected by sediment gravity flow. All dip-oriented seismic lines show large-scale slumping. Surface sample textural data indicate that wind-driven currents are redistributing sediments in a predictable pattern to about 450 meters depth. Total grain size analyses are necessary to differentiate ice-rafted-debris from other sands. Seismic data support previous interpretations of a passive margin setting, and show up to three seismic sequences within sediment fill on the margin and plateau. Thesis Antarc* Antarctica Rice University: Digital Scholarship Archive South Orkney Plateau ENVELOPE(-44.157,-44.157,-60.690,-60.690) |
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Open Polar |
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Rice University: Digital Scholarship Archive |
op_collection_id |
ftriceuniv |
language |
English |
topic |
Geology Physical oceanography Paleontology |
spellingShingle |
Geology Physical oceanography Paleontology Herron, Margaret Jane Marine geology and geophysics of the western South Orkney Plateau, Antarctica: Implications for Quaternary glacial history, tectonics, and paleoceanography |
topic_facet |
Geology Physical oceanography Paleontology |
description |
Piston cores and single-channel seismic profiles were collected from the western South Orkney Plateau to investigate glacial history, survey the seismic stratigraphy, and test the feasibility of paleoceanographic interpretation as a site survey for O.D.P Leg 113 drilling operations. Data reveal evidence for past grounded ice to 240 meters depth, and expanded floating ice cover over the entire plateau. Paleoceanographic interpretation is difficult because nearly 75% of slope cores are affected by sediment gravity flow. All dip-oriented seismic lines show large-scale slumping. Surface sample textural data indicate that wind-driven currents are redistributing sediments in a predictable pattern to about 450 meters depth. Total grain size analyses are necessary to differentiate ice-rafted-debris from other sands. Seismic data support previous interpretations of a passive margin setting, and show up to three seismic sequences within sediment fill on the margin and plateau. |
author2 |
Anderson, John B. |
format |
Thesis |
author |
Herron, Margaret Jane |
author_facet |
Herron, Margaret Jane |
author_sort |
Herron, Margaret Jane |
title |
Marine geology and geophysics of the western South Orkney Plateau, Antarctica: Implications for Quaternary glacial history, tectonics, and paleoceanography |
title_short |
Marine geology and geophysics of the western South Orkney Plateau, Antarctica: Implications for Quaternary glacial history, tectonics, and paleoceanography |
title_full |
Marine geology and geophysics of the western South Orkney Plateau, Antarctica: Implications for Quaternary glacial history, tectonics, and paleoceanography |
title_fullStr |
Marine geology and geophysics of the western South Orkney Plateau, Antarctica: Implications for Quaternary glacial history, tectonics, and paleoceanography |
title_full_unstemmed |
Marine geology and geophysics of the western South Orkney Plateau, Antarctica: Implications for Quaternary glacial history, tectonics, and paleoceanography |
title_sort |
marine geology and geophysics of the western south orkney plateau, antarctica: implications for quaternary glacial history, tectonics, and paleoceanography |
publishDate |
1988 |
url |
https://hdl.handle.net/1911/13288 |
long_lat |
ENVELOPE(-44.157,-44.157,-60.690,-60.690) |
geographic |
South Orkney Plateau |
geographic_facet |
South Orkney Plateau |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
Herron, Margaret Jane. "Marine geology and geophysics of the western South Orkney Plateau, Antarctica: Implications for Quaternary glacial history, tectonics, and paleoceanography." (1988) Master’s Thesis, Rice University. https://hdl.handle.net/1911/13288 . https://hdl.handle.net/1911/13288 Thesis Geol. 1988 Herron |
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1766114901101641728 |