Late Wisconsin and early holocene glacial history, inner Ross Embayment, Antarctica
Lateral drift sheets of outlet glaciers that pass through the Transantarctic Mountains constrain past changes of the huge Ross ice drainage system of the Antarctic Ice Sheet. Drift stratigraphy suggests correlation of Reedy III (Reedy Glacier), Beardmore, Britannia (Hatherton/Darwin Glaciers), Ross...
Main Authors: | , , , |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
1991
|
Subjects: | |
Online Access: | http://hdl.handle.net/2060/19910017263 |
id |
ftnasantrs:oai:casi.ntrs.nasa.gov:19910017263 |
---|---|
record_format |
openpolar |
spelling |
ftnasantrs:oai:casi.ntrs.nasa.gov:19910017263 2023-05-15T13:42:52+02:00 Late Wisconsin and early holocene glacial history, inner Ross Embayment, Antarctica Stuiver, Minze Bockheim, James G. Wilson, Scott C. Denton, George H. Unclassified, Unlimited, Publicly available May 1, 1991 application/pdf http://hdl.handle.net/2060/19910017263 unknown Document ID: 19910017263 Accession ID: 91N26577 http://hdl.handle.net/2060/19910017263 No Copyright CASI GEOPHYSICS NASA. Goddard Space Flight Center, West Antarctic Ice Sheet Initiative. Volume 2: Discipline Reviews; p 55-86 1991 ftnasantrs 2015-03-15T05:16:45Z Lateral drift sheets of outlet glaciers that pass through the Transantarctic Mountains constrain past changes of the huge Ross ice drainage system of the Antarctic Ice Sheet. Drift stratigraphy suggests correlation of Reedy III (Reedy Glacier), Beardmore, Britannia (Hatherton/Darwin Glaciers), Ross Sea (McMurdo Sound), and younger (Terra Nova Bay) drifts; radiocarbon dates place the outer limits of Ross Sea drift in late Wisconsin time at 24,000 to 13,000 yr B.P. Outlet glacier profiles from these drifts constrain late Wisconsin ice sheet surface elevations. Within these constraint, two extreme late Wisconsin reconstructions are given of the Ross ice drainage system. Both show little elevation change of the polar plateau coincident with extensive ice shelf grounding along the inner Ross Embayment. However, in the central Ross Embayment, one reconstruction shows floating shelf ice, where as the other shows a grounded ice sheet. Massive late Wisconsin/Holocene recession of grounded ice from the western Ross Embayment, which was underway at 13,040 yr B.P. and completed by 6600 to 6020 yr B.P., was accompanied by little change in plateau ice levels inland of the Transantarctic Mountains. Other/Unknown Material Antarc* Antarctic Antarctica Ice Sheet Ice Shelf McMurdo Sound Reedy Glacier Ross Sea NASA Technical Reports Server (NTRS) Antarctic The Antarctic Ross Sea McMurdo Sound Terra Nova Bay Transantarctic Mountains Beardmore ENVELOPE(174.900,174.900,-83.350,-83.350) Polar Plateau ENVELOPE(0.000,0.000,-90.000,-90.000) Britannia ENVELOPE(-62.681,-62.681,-64.718,-64.718) Reedy Glacier ENVELOPE(-134.000,-134.000,-85.500,-85.500) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
GEOPHYSICS |
spellingShingle |
GEOPHYSICS Stuiver, Minze Bockheim, James G. Wilson, Scott C. Denton, George H. Late Wisconsin and early holocene glacial history, inner Ross Embayment, Antarctica |
topic_facet |
GEOPHYSICS |
description |
Lateral drift sheets of outlet glaciers that pass through the Transantarctic Mountains constrain past changes of the huge Ross ice drainage system of the Antarctic Ice Sheet. Drift stratigraphy suggests correlation of Reedy III (Reedy Glacier), Beardmore, Britannia (Hatherton/Darwin Glaciers), Ross Sea (McMurdo Sound), and younger (Terra Nova Bay) drifts; radiocarbon dates place the outer limits of Ross Sea drift in late Wisconsin time at 24,000 to 13,000 yr B.P. Outlet glacier profiles from these drifts constrain late Wisconsin ice sheet surface elevations. Within these constraint, two extreme late Wisconsin reconstructions are given of the Ross ice drainage system. Both show little elevation change of the polar plateau coincident with extensive ice shelf grounding along the inner Ross Embayment. However, in the central Ross Embayment, one reconstruction shows floating shelf ice, where as the other shows a grounded ice sheet. Massive late Wisconsin/Holocene recession of grounded ice from the western Ross Embayment, which was underway at 13,040 yr B.P. and completed by 6600 to 6020 yr B.P., was accompanied by little change in plateau ice levels inland of the Transantarctic Mountains. |
format |
Other/Unknown Material |
author |
Stuiver, Minze Bockheim, James G. Wilson, Scott C. Denton, George H. |
author_facet |
Stuiver, Minze Bockheim, James G. Wilson, Scott C. Denton, George H. |
author_sort |
Stuiver, Minze |
title |
Late Wisconsin and early holocene glacial history, inner Ross Embayment, Antarctica |
title_short |
Late Wisconsin and early holocene glacial history, inner Ross Embayment, Antarctica |
title_full |
Late Wisconsin and early holocene glacial history, inner Ross Embayment, Antarctica |
title_fullStr |
Late Wisconsin and early holocene glacial history, inner Ross Embayment, Antarctica |
title_full_unstemmed |
Late Wisconsin and early holocene glacial history, inner Ross Embayment, Antarctica |
title_sort |
late wisconsin and early holocene glacial history, inner ross embayment, antarctica |
publishDate |
1991 |
url |
http://hdl.handle.net/2060/19910017263 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(174.900,174.900,-83.350,-83.350) ENVELOPE(0.000,0.000,-90.000,-90.000) ENVELOPE(-62.681,-62.681,-64.718,-64.718) ENVELOPE(-134.000,-134.000,-85.500,-85.500) |
geographic |
Antarctic The Antarctic Ross Sea McMurdo Sound Terra Nova Bay Transantarctic Mountains Beardmore Polar Plateau Britannia Reedy Glacier |
geographic_facet |
Antarctic The Antarctic Ross Sea McMurdo Sound Terra Nova Bay Transantarctic Mountains Beardmore Polar Plateau Britannia Reedy Glacier |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf McMurdo Sound Reedy Glacier Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf McMurdo Sound Reedy Glacier Ross Sea |
op_source |
CASI |
op_relation |
Document ID: 19910017263 Accession ID: 91N26577 http://hdl.handle.net/2060/19910017263 |
op_rights |
No Copyright |
_version_ |
1766173733261672448 |