ON THE MODE OF UPLIFT OF THE FISH AND FOSSILIFEROUS MORAINES OF THE MCMURDO ICE SHELF, ANTARCTICA.
The McMurdo Ice Shelf and associated faunal remains were examined in the vicinity of the easternmost Dailey Island. Stratigraphic, petrographic, and chemical composition studies of cores from 2 holes drilled through the ice shelf show that at these locations the shelf is composed only of fresh water...
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1965
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ftdtic:AD0628513 2023-05-15T14:00:27+02:00 ON THE MODE OF UPLIFT OF THE FISH AND FOSSILIFEROUS MORAINES OF THE MCMURDO ICE SHELF, ANTARCTICA. Gow,A. J. Weeks,W. F. Hendrickson,G. Rowland,R. COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H 1965-10 text/html http://www.dtic.mil/docs/citations/AD0628513 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0628513 en eng http://www.dtic.mil/docs/citations/AD0628513 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Geology Geochemistry and Mineralogy (*ICE GEOLOGY) (*ANTARCTIC REGIONS PALEONTOLOGY PETROGRAPHY STRATIGRAPHY GEOCHEMISTRY GLACIERS FISHES DISTRIBUTION Text 1965 ftdtic 2016-02-18T18:59:03Z The McMurdo Ice Shelf and associated faunal remains were examined in the vicinity of the easternmost Dailey Island. Stratigraphic, petrographic, and chemical composition studies of cores from 2 holes drilled through the ice shelf show that at these locations the shelf is composed only of fresh water ice. Although cores from the deeper hole possessed glacial textures throughout, much of the ice from this part of the McMurdo Ice Shelf may have been formed from the freezing of a layer of fresh water found sandwiched between the shelf bottom and the underlying sea water. The existence of fresh water under the ice shelf can most probably be attributed to drainage of surface melt water during the ablation season. There was no evidence to indicate that this part of the ice shelf is being nourished by the growth of sea ice onto its lower surface. The fish remains found on the ice surfaces were confined to a narrow zone along the tide crack and are believed to have been left in this vicinity by deep diving seals. The marine invertebrate remains on top of the ice are associated with morainal material and are believed to have been incorporated into the ice at the time of formation of the moraines. (Author) Text Antarc* Antarctic Antarctica Ice Shelf McMurdo Ice Shelf Sea ice Defense Technical Information Center: DTIC Technical Reports database Antarctic McMurdo Ice Shelf ENVELOPE(166.500,166.500,-78.000,-78.000) |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Geology Geochemistry and Mineralogy (*ICE GEOLOGY) (*ANTARCTIC REGIONS PALEONTOLOGY PETROGRAPHY STRATIGRAPHY GEOCHEMISTRY GLACIERS FISHES DISTRIBUTION |
spellingShingle |
Geology Geochemistry and Mineralogy (*ICE GEOLOGY) (*ANTARCTIC REGIONS PALEONTOLOGY PETROGRAPHY STRATIGRAPHY GEOCHEMISTRY GLACIERS FISHES DISTRIBUTION Gow,A. J. Weeks,W. F. Hendrickson,G. Rowland,R. ON THE MODE OF UPLIFT OF THE FISH AND FOSSILIFEROUS MORAINES OF THE MCMURDO ICE SHELF, ANTARCTICA. |
topic_facet |
Geology Geochemistry and Mineralogy (*ICE GEOLOGY) (*ANTARCTIC REGIONS PALEONTOLOGY PETROGRAPHY STRATIGRAPHY GEOCHEMISTRY GLACIERS FISHES DISTRIBUTION |
description |
The McMurdo Ice Shelf and associated faunal remains were examined in the vicinity of the easternmost Dailey Island. Stratigraphic, petrographic, and chemical composition studies of cores from 2 holes drilled through the ice shelf show that at these locations the shelf is composed only of fresh water ice. Although cores from the deeper hole possessed glacial textures throughout, much of the ice from this part of the McMurdo Ice Shelf may have been formed from the freezing of a layer of fresh water found sandwiched between the shelf bottom and the underlying sea water. The existence of fresh water under the ice shelf can most probably be attributed to drainage of surface melt water during the ablation season. There was no evidence to indicate that this part of the ice shelf is being nourished by the growth of sea ice onto its lower surface. The fish remains found on the ice surfaces were confined to a narrow zone along the tide crack and are believed to have been left in this vicinity by deep diving seals. The marine invertebrate remains on top of the ice are associated with morainal material and are believed to have been incorporated into the ice at the time of formation of the moraines. (Author) |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H |
format |
Text |
author |
Gow,A. J. Weeks,W. F. Hendrickson,G. Rowland,R. |
author_facet |
Gow,A. J. Weeks,W. F. Hendrickson,G. Rowland,R. |
author_sort |
Gow,A. J. |
title |
ON THE MODE OF UPLIFT OF THE FISH AND FOSSILIFEROUS MORAINES OF THE MCMURDO ICE SHELF, ANTARCTICA. |
title_short |
ON THE MODE OF UPLIFT OF THE FISH AND FOSSILIFEROUS MORAINES OF THE MCMURDO ICE SHELF, ANTARCTICA. |
title_full |
ON THE MODE OF UPLIFT OF THE FISH AND FOSSILIFEROUS MORAINES OF THE MCMURDO ICE SHELF, ANTARCTICA. |
title_fullStr |
ON THE MODE OF UPLIFT OF THE FISH AND FOSSILIFEROUS MORAINES OF THE MCMURDO ICE SHELF, ANTARCTICA. |
title_full_unstemmed |
ON THE MODE OF UPLIFT OF THE FISH AND FOSSILIFEROUS MORAINES OF THE MCMURDO ICE SHELF, ANTARCTICA. |
title_sort |
on the mode of uplift of the fish and fossiliferous moraines of the mcmurdo ice shelf, antarctica. |
publishDate |
1965 |
url |
http://www.dtic.mil/docs/citations/AD0628513 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0628513 |
long_lat |
ENVELOPE(166.500,166.500,-78.000,-78.000) |
geographic |
Antarctic McMurdo Ice Shelf |
geographic_facet |
Antarctic McMurdo Ice Shelf |
genre |
Antarc* Antarctic Antarctica Ice Shelf McMurdo Ice Shelf Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Ice Shelf McMurdo Ice Shelf Sea ice |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0628513 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766269544619311104 |