Holocene and pre-Holocene temporary disappearance
Abstract: We present evidence for the absence of the George VI Ice Shelf during a brief period in the mid-Holocene and during one or more earlier interstadials or interglacials. Barnacle Bathylasma corollcorme shells sampled from ice shelf moraines at Two Step Cliffs on Alexander Island have been da...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.550.1629 2023-05-15T13:15:15+02:00 Holocene and pre-Holocene temporary disappearance C. Hjort M. J. Bentley The Pennsylvania State University CiteSeerX Archives 2001 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.550.1629 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.550.1629 Metadata may be used without restrictions as long as the oai identifier remains attached to it. https://notendur.hi.is/~oi/PDF reprints/Hjort, Bentley and Ingolfsson Antarctic science 13.pdf Key words Antarctic Peninsula Alexander Island glacial chronology ice shelf Fig. 1. Antarctic Peninsula area text 2001 ftciteseerx 2016-01-08T11:31:06Z Abstract: We present evidence for the absence of the George VI Ice Shelf during a brief period in the mid-Holocene and during one or more earlier interstadials or interglacials. Barnacle Bathylasma corollcorme shells sampled from ice shelf moraines at Two Step Cliffs on Alexander Island have been dated to c. 5750-6000 I4C yr RP(C. 6550-6850 cal yr BP) and imply seasonally open water in the George VI Sound during this period. Other shells are beyond the range of radiocarbon dating and imply open water during one or more previous interglacial or iiiterstadial period, prior to 40 000 I4C yr BP. Our results show that the ongoing collapse of some Antarctic Peninsula ice shelves is not unprecedented. Text Alexander Island Antarc* Antarctic Antarctic Peninsula Antarctic Science George VI Ice Shelf Ice Shelf Ice Shelves Unknown Alexander Island ENVELOPE(-69.895,-69.895,-71.287,-71.287) Antarctic Antarctic Peninsula George VI Ice Shelf ENVELOPE(-67.840,-67.840,-71.692,-71.692) George VI Sound ENVELOPE(-68.000,-68.000,-71.000,-71.000) Two Step Cliffs ENVELOPE(-68.267,-68.267,-71.880,-71.880) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Key words Antarctic Peninsula Alexander Island glacial chronology ice shelf Fig. 1. Antarctic Peninsula area |
spellingShingle |
Key words Antarctic Peninsula Alexander Island glacial chronology ice shelf Fig. 1. Antarctic Peninsula area C. Hjort M. J. Bentley Holocene and pre-Holocene temporary disappearance |
topic_facet |
Key words Antarctic Peninsula Alexander Island glacial chronology ice shelf Fig. 1. Antarctic Peninsula area |
description |
Abstract: We present evidence for the absence of the George VI Ice Shelf during a brief period in the mid-Holocene and during one or more earlier interstadials or interglacials. Barnacle Bathylasma corollcorme shells sampled from ice shelf moraines at Two Step Cliffs on Alexander Island have been dated to c. 5750-6000 I4C yr RP(C. 6550-6850 cal yr BP) and imply seasonally open water in the George VI Sound during this period. Other shells are beyond the range of radiocarbon dating and imply open water during one or more previous interglacial or iiiterstadial period, prior to 40 000 I4C yr BP. Our results show that the ongoing collapse of some Antarctic Peninsula ice shelves is not unprecedented. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
C. Hjort M. J. Bentley |
author_facet |
C. Hjort M. J. Bentley |
author_sort |
C. Hjort |
title |
Holocene and pre-Holocene temporary disappearance |
title_short |
Holocene and pre-Holocene temporary disappearance |
title_full |
Holocene and pre-Holocene temporary disappearance |
title_fullStr |
Holocene and pre-Holocene temporary disappearance |
title_full_unstemmed |
Holocene and pre-Holocene temporary disappearance |
title_sort |
holocene and pre-holocene temporary disappearance |
publishDate |
2001 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.550.1629 |
long_lat |
ENVELOPE(-69.895,-69.895,-71.287,-71.287) ENVELOPE(-67.840,-67.840,-71.692,-71.692) ENVELOPE(-68.000,-68.000,-71.000,-71.000) ENVELOPE(-68.267,-68.267,-71.880,-71.880) |
geographic |
Alexander Island Antarctic Antarctic Peninsula George VI Ice Shelf George VI Sound Two Step Cliffs |
geographic_facet |
Alexander Island Antarctic Antarctic Peninsula George VI Ice Shelf George VI Sound Two Step Cliffs |
genre |
Alexander Island Antarc* Antarctic Antarctic Peninsula Antarctic Science George VI Ice Shelf Ice Shelf Ice Shelves |
genre_facet |
Alexander Island Antarc* Antarctic Antarctic Peninsula Antarctic Science George VI Ice Shelf Ice Shelf Ice Shelves |
op_source |
https://notendur.hi.is/~oi/PDF reprints/Hjort, Bentley and Ingolfsson Antarctic science 13.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.550.1629 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766267686258475008 |