Holocene fluctuations of Leffert Glacier and nearby outlet glaciers, Ellesmere Island, Nunavut, Canada
ABSTRACT Radiocarbon age determinations on marine shells in lateral moraines and other deposits several kms behind the present day termini of tidewater outlet glaciers from the Prince of Wales Icefield, east-central Ellesmere Island, Nunavut, Arctic Canada, as well as tidewater glaciers from two nea...
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2011
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crcambridgeupr:10.1017/s0032247411000349 2024-05-12T08:00:22+00:00 Holocene fluctuations of Leffert Glacier and nearby outlet glaciers, Ellesmere Island, Nunavut, Canada Blake, Weston 2011 http://dx.doi.org/10.1017/s0032247411000349 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247411000349 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Polar Record volume 48, issue 4, page 306-333 ISSN 0032-2474 1475-3057 General Earth and Planetary Sciences Ecology Geography, Planning and Development journal-article 2011 crcambridgeupr https://doi.org/10.1017/s0032247411000349 2024-04-18T06:54:23Z ABSTRACT Radiocarbon age determinations on marine shells in lateral moraines and other deposits several kms behind the present day termini of tidewater outlet glaciers from the Prince of Wales Icefield, east-central Ellesmere Island, Nunavut, Arctic Canada, as well as tidewater glaciers from two nearby ice-caps, show that these glaciers have fluctuated considerably through the Holocene, both in length and in thickness. The terminus of Leffert Glacier, for which the best documentation is available, has been more than 20 km west of the position that it occupied in 1898–1899, when it was mapped for the first time. Leffert Glacier was much reduced in size for a period of several thousand years, between roughly 6450 and 1850 14 C years BP. Other major outlet glaciers that have experienced significant fluctuations of their termini during the Holocene are: 1) MacMillan, Ekblaw and Tanquary glaciers in the Baird Inlet area, 2) Stygge Glacier and adjacent unnamed glaciers at the head of Jokel Fiord, 3) Benedict Glacier at the head of Sawyer Bay and 4) Parrish Glacier, the southernmost outlet glacier from the Agassiz Ice Cap. Of the glaciers investigated, only Alfred Newton Glacier, south of Cape Herschel, has surged during the period of field observation (1977 to 2009), and this glacier is now receding from the position attained in a surge which commenced in 1981. The terminus of Ekblaw Glacier, at the head of Baird Inlet, is now well forward of the position it occupied in 1950, when the first aerial photograph coverage was achieved. Article in Journal/Newspaper Arctic Ellesmere Island glacier* Ice cap Nunavut Polar Record Sawyer Bay Tidewater Cambridge University Press Arctic Nunavut Ellesmere Island Canada Benedict ENVELOPE(-66.585,-66.585,-66.157,-66.157) Agassiz Ice Cap ENVELOPE(-75.996,-75.996,80.252,80.252) Prince of Wales Icefield ENVELOPE(-78.998,-78.998,78.252,78.252) Ekblaw ENVELOPE(-141.800,-141.800,-77.317,-77.317) Baird Inlet ENVELOPE(-75.830,-75.830,78.469,78.469) Leffert Glacier ENVELOPE(-75.021,-75.021,78.687,78.687) Alfred Newton Glacier ENVELOPE(-74.997,-74.997,78.580,78.580) Benedict Glacier ENVELOPE(-78.064,-78.064,79.369,79.369) Ekblaw Glacier ENVELOPE(-76.837,-76.837,78.507,78.507) Jokel Fiord ENVELOPE(-78.081,-78.081,78.869,78.869) Newton Glacier ENVELOPE(-140.721,-140.721,60.283,60.283) Parrish Glacier ENVELOPE(-77.180,-77.180,79.602,79.602) Sawyer Bay ENVELOPE(-77.547,-77.547,79.319,79.319) Stygge Glacier ENVELOPE(-78.397,-78.397,78.723,78.723) Cape Herschel ENVELOPE(-74.575,-74.575,78.587,78.587) Polar Record 48 4 306 333 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
General Earth and Planetary Sciences Ecology Geography, Planning and Development |
spellingShingle |
General Earth and Planetary Sciences Ecology Geography, Planning and Development Blake, Weston Holocene fluctuations of Leffert Glacier and nearby outlet glaciers, Ellesmere Island, Nunavut, Canada |
topic_facet |
General Earth and Planetary Sciences Ecology Geography, Planning and Development |
description |
ABSTRACT Radiocarbon age determinations on marine shells in lateral moraines and other deposits several kms behind the present day termini of tidewater outlet glaciers from the Prince of Wales Icefield, east-central Ellesmere Island, Nunavut, Arctic Canada, as well as tidewater glaciers from two nearby ice-caps, show that these glaciers have fluctuated considerably through the Holocene, both in length and in thickness. The terminus of Leffert Glacier, for which the best documentation is available, has been more than 20 km west of the position that it occupied in 1898–1899, when it was mapped for the first time. Leffert Glacier was much reduced in size for a period of several thousand years, between roughly 6450 and 1850 14 C years BP. Other major outlet glaciers that have experienced significant fluctuations of their termini during the Holocene are: 1) MacMillan, Ekblaw and Tanquary glaciers in the Baird Inlet area, 2) Stygge Glacier and adjacent unnamed glaciers at the head of Jokel Fiord, 3) Benedict Glacier at the head of Sawyer Bay and 4) Parrish Glacier, the southernmost outlet glacier from the Agassiz Ice Cap. Of the glaciers investigated, only Alfred Newton Glacier, south of Cape Herschel, has surged during the period of field observation (1977 to 2009), and this glacier is now receding from the position attained in a surge which commenced in 1981. The terminus of Ekblaw Glacier, at the head of Baird Inlet, is now well forward of the position it occupied in 1950, when the first aerial photograph coverage was achieved. |
format |
Article in Journal/Newspaper |
author |
Blake, Weston |
author_facet |
Blake, Weston |
author_sort |
Blake, Weston |
title |
Holocene fluctuations of Leffert Glacier and nearby outlet glaciers, Ellesmere Island, Nunavut, Canada |
title_short |
Holocene fluctuations of Leffert Glacier and nearby outlet glaciers, Ellesmere Island, Nunavut, Canada |
title_full |
Holocene fluctuations of Leffert Glacier and nearby outlet glaciers, Ellesmere Island, Nunavut, Canada |
title_fullStr |
Holocene fluctuations of Leffert Glacier and nearby outlet glaciers, Ellesmere Island, Nunavut, Canada |
title_full_unstemmed |
Holocene fluctuations of Leffert Glacier and nearby outlet glaciers, Ellesmere Island, Nunavut, Canada |
title_sort |
holocene fluctuations of leffert glacier and nearby outlet glaciers, ellesmere island, nunavut, canada |
publisher |
Cambridge University Press (CUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1017/s0032247411000349 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247411000349 |
long_lat |
ENVELOPE(-66.585,-66.585,-66.157,-66.157) ENVELOPE(-75.996,-75.996,80.252,80.252) ENVELOPE(-78.998,-78.998,78.252,78.252) ENVELOPE(-141.800,-141.800,-77.317,-77.317) ENVELOPE(-75.830,-75.830,78.469,78.469) ENVELOPE(-75.021,-75.021,78.687,78.687) ENVELOPE(-74.997,-74.997,78.580,78.580) ENVELOPE(-78.064,-78.064,79.369,79.369) ENVELOPE(-76.837,-76.837,78.507,78.507) ENVELOPE(-78.081,-78.081,78.869,78.869) ENVELOPE(-140.721,-140.721,60.283,60.283) ENVELOPE(-77.180,-77.180,79.602,79.602) ENVELOPE(-77.547,-77.547,79.319,79.319) ENVELOPE(-78.397,-78.397,78.723,78.723) ENVELOPE(-74.575,-74.575,78.587,78.587) |
geographic |
Arctic Nunavut Ellesmere Island Canada Benedict Agassiz Ice Cap Prince of Wales Icefield Ekblaw Baird Inlet Leffert Glacier Alfred Newton Glacier Benedict Glacier Ekblaw Glacier Jokel Fiord Newton Glacier Parrish Glacier Sawyer Bay Stygge Glacier Cape Herschel |
geographic_facet |
Arctic Nunavut Ellesmere Island Canada Benedict Agassiz Ice Cap Prince of Wales Icefield Ekblaw Baird Inlet Leffert Glacier Alfred Newton Glacier Benedict Glacier Ekblaw Glacier Jokel Fiord Newton Glacier Parrish Glacier Sawyer Bay Stygge Glacier Cape Herschel |
genre |
Arctic Ellesmere Island glacier* Ice cap Nunavut Polar Record Sawyer Bay Tidewater |
genre_facet |
Arctic Ellesmere Island glacier* Ice cap Nunavut Polar Record Sawyer Bay Tidewater |
op_source |
Polar Record volume 48, issue 4, page 306-333 ISSN 0032-2474 1475-3057 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0032247411000349 |
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Polar Record |
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48 |
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4 |
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333 |
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