Glacial sedimentation in ODP Leg 119 samples
Although scientific evidence prior to that from ODP Leg 119 indicates the presence of an ice sheet on East Antarctica by at least the earliest Oligocene, the question as to the size and stability of that initial ice sheet is still contested. Current hypotheses include (1) the presence of a small ice...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.758078 2024-09-15T17:40:52+00:00 Glacial sedimentation in ODP Leg 119 samples Barron, John A Larsen, Birger Baldauf, Jack G MEDIAN LATITUDE: -64.766550 * MEDIAN LONGITUDE: 75.956323 * SOUTH-BOUND LATITUDE: -67.553000 * WEST-BOUND LONGITUDE: 73.032400 * NORTH-BOUND LATITUDE: -50.228000 * EAST-BOUND LONGITUDE: 82.787800 * DATE/TIME START: 1987-12-30T04:30:00 * DATE/TIME END: 1988-02-07T06:30:00 1991 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.758078 https://doi.org/10.1594/PANGAEA.758078 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.758078 https://doi.org/10.1594/PANGAEA.758078 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Barron, John A; Larsen, Birger; Baldauf, Jack G (1991): Evidence for late Eocene to early Oligocene Antarctic glaciation and observations on late Neogene glacial history of Antarctica: results from Leg 119. In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 869-891, https://doi.org/10.2973/odp.proc.sr.119.194.1991 119-737A 119-737B 119-738B 119-738C 119-739 119-739C 119-742A 119-744A 119-744B COMPCORE Composite Core DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay dataset publication series 1991 ftpangaea https://doi.org/10.1594/PANGAEA.75807810.2973/odp.proc.sr.119.194.1991 2024-07-24T02:31:20Z Although scientific evidence prior to that from ODP Leg 119 indicates the presence of an ice sheet on East Antarctica by at least the earliest Oligocene, the question as to the size and stability of that initial ice sheet is still contested. Current hypotheses include (1) the presence of a small ice sheet in the earliest Oligocene with stepwise growth during the Neogene, (2) the presence of a continental-sized ice sheet in the late middle Eocene with no major evidence of subsequent deglaciation, and (3) the presence of glacial ice in the earliest Oligocene with a major ice sheet during the mid-Oligocene, followed by growth and decay of several ice sheets with characteristics similar to the temperate ice sheets of the Pleistocene of North America but with changes over a longer time scale (millions of years vs. 100,000 yr). Principal results from Leg 119 suggest the presence of significant late middle and late Eocene glaciation in East Antarctica and the presence of a continental-size ice sheet in East Antarctica during the earliest Oligocene. Although the Leg 119 results provide only glimpses of the Neogene glacial history of East Antarctica, they do provide evidence of fluctuations in the extent of the ice sheet and the waxing and waning of glaciers across the Prydz Bay shelf during the later part of the late Miocene and Pliocene. Other/Unknown Material Antarc* Antarctica East Antarctica Ice Sheet Prydz Bay PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(73.032400,82.787800,-50.228000,-67.553000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
119-737A 119-737B 119-738B 119-738C 119-739 119-739C 119-742A 119-744A 119-744B COMPCORE Composite Core DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay |
spellingShingle |
119-737A 119-737B 119-738B 119-738C 119-739 119-739C 119-742A 119-744A 119-744B COMPCORE Composite Core DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay Barron, John A Larsen, Birger Baldauf, Jack G Glacial sedimentation in ODP Leg 119 samples |
topic_facet |
119-737A 119-737B 119-738B 119-738C 119-739 119-739C 119-742A 119-744A 119-744B COMPCORE Composite Core DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg119 Ocean Drilling Program ODP Prydz Bay |
description |
Although scientific evidence prior to that from ODP Leg 119 indicates the presence of an ice sheet on East Antarctica by at least the earliest Oligocene, the question as to the size and stability of that initial ice sheet is still contested. Current hypotheses include (1) the presence of a small ice sheet in the earliest Oligocene with stepwise growth during the Neogene, (2) the presence of a continental-sized ice sheet in the late middle Eocene with no major evidence of subsequent deglaciation, and (3) the presence of glacial ice in the earliest Oligocene with a major ice sheet during the mid-Oligocene, followed by growth and decay of several ice sheets with characteristics similar to the temperate ice sheets of the Pleistocene of North America but with changes over a longer time scale (millions of years vs. 100,000 yr). Principal results from Leg 119 suggest the presence of significant late middle and late Eocene glaciation in East Antarctica and the presence of a continental-size ice sheet in East Antarctica during the earliest Oligocene. Although the Leg 119 results provide only glimpses of the Neogene glacial history of East Antarctica, they do provide evidence of fluctuations in the extent of the ice sheet and the waxing and waning of glaciers across the Prydz Bay shelf during the later part of the late Miocene and Pliocene. |
format |
Other/Unknown Material |
author |
Barron, John A Larsen, Birger Baldauf, Jack G |
author_facet |
Barron, John A Larsen, Birger Baldauf, Jack G |
author_sort |
Barron, John A |
title |
Glacial sedimentation in ODP Leg 119 samples |
title_short |
Glacial sedimentation in ODP Leg 119 samples |
title_full |
Glacial sedimentation in ODP Leg 119 samples |
title_fullStr |
Glacial sedimentation in ODP Leg 119 samples |
title_full_unstemmed |
Glacial sedimentation in ODP Leg 119 samples |
title_sort |
glacial sedimentation in odp leg 119 samples |
publisher |
PANGAEA |
publishDate |
1991 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.758078 https://doi.org/10.1594/PANGAEA.758078 |
op_coverage |
MEDIAN LATITUDE: -64.766550 * MEDIAN LONGITUDE: 75.956323 * SOUTH-BOUND LATITUDE: -67.553000 * WEST-BOUND LONGITUDE: 73.032400 * NORTH-BOUND LATITUDE: -50.228000 * EAST-BOUND LONGITUDE: 82.787800 * DATE/TIME START: 1987-12-30T04:30:00 * DATE/TIME END: 1988-02-07T06:30:00 |
long_lat |
ENVELOPE(73.032400,82.787800,-50.228000,-67.553000) |
genre |
Antarc* Antarctica East Antarctica Ice Sheet Prydz Bay |
genre_facet |
Antarc* Antarctica East Antarctica Ice Sheet Prydz Bay |
op_source |
Supplement to: Barron, John A; Larsen, Birger; Baldauf, Jack G (1991): Evidence for late Eocene to early Oligocene Antarctic glaciation and observations on late Neogene glacial history of Antarctica: results from Leg 119. In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 869-891, https://doi.org/10.2973/odp.proc.sr.119.194.1991 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.758078 https://doi.org/10.1594/PANGAEA.758078 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.75807810.2973/odp.proc.sr.119.194.1991 |
_version_ |
1810486941319168000 |