Differential Movement across Byrd Glacier, Antarctica, as indicated by Apatite (U–Th)/He thermochronology and geomorphological analysis
The objectives of this study were to assess possible differential movement across an inferred fault beneath Byrd Glacier, and to measure the timing of unroofing in this portion of the Transantarctic Mountains. Apatites separated from rock samples collected from known elevations at various locations...
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Geological Society of London
2016
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ftdatacite:10.6084/m9.figshare.3453494 2023-05-15T14:05:28+02:00 Differential Movement across Byrd Glacier, Antarctica, as indicated by Apatite (U–Th)/He thermochronology and geomorphological analysis D. J. Foley E. Stump M. Van Soest K. X. Whipple K. V. Hodges 2016 https://dx.doi.org/10.6084/m9.figshare.3453494 https://geolsoc.figshare.com/articles/journal_contribution/Differential_Movement_across_Byrd_Glacier_Antarctica_as_indicated_by_Apatite_U_Th_He_thermochronology_and_geomorphological___analysis/3453494 unknown Geological Society of London https://dx.doi.org/10.1144/sp381.25 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Geology FOS Earth and related environmental sciences Text article-journal Journal contribution ScholarlyArticle 2016 ftdatacite https://doi.org/10.6084/m9.figshare.3453494 https://doi.org/10.1144/sp381.25 2021-11-05T12:55:41Z The objectives of this study were to assess possible differential movement across an inferred fault beneath Byrd Glacier, and to measure the timing of unroofing in this portion of the Transantarctic Mountains. Apatites separated from rock samples collected from known elevations at various locations north and south of Byrd Glacier were dated using single crystal (U–Th)/He analysis. Results indicate a denudation rate of c. 0.04 mm a −1 in the time range c. 140–40 Ma. Distinct age v. elevation plots from north and south of Byrd Glacier indicate an offset of c. 1 km across the glacier with south side up. A Landsat image of the Byrd Glacier area was overlain on an Aster Global Digital Elevation Model and spot elevations of the Kukri erosion surface to the north and south of Byrd Glacier were mapped. The difference in elevation of the erosion surface across Byrd Glacier also shows an offset of c. 1 km with south side up. Results support a model of relatively uniform cooling and unroofing of the region with later, post-40 Ma fault displacement that uplifted the south side of Byrd Glacier relative to the north. Text Antarc* Antarctica Byrd Glacier DataCite Metadata Store (German National Library of Science and Technology) Byrd Byrd Glacier ENVELOPE(160.333,160.333,-80.250,-80.250) Transantarctic Mountains |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
unknown |
topic |
Geology FOS Earth and related environmental sciences |
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Geology FOS Earth and related environmental sciences D. J. Foley E. Stump M. Van Soest K. X. Whipple K. V. Hodges Differential Movement across Byrd Glacier, Antarctica, as indicated by Apatite (U–Th)/He thermochronology and geomorphological analysis |
topic_facet |
Geology FOS Earth and related environmental sciences |
description |
The objectives of this study were to assess possible differential movement across an inferred fault beneath Byrd Glacier, and to measure the timing of unroofing in this portion of the Transantarctic Mountains. Apatites separated from rock samples collected from known elevations at various locations north and south of Byrd Glacier were dated using single crystal (U–Th)/He analysis. Results indicate a denudation rate of c. 0.04 mm a −1 in the time range c. 140–40 Ma. Distinct age v. elevation plots from north and south of Byrd Glacier indicate an offset of c. 1 km across the glacier with south side up. A Landsat image of the Byrd Glacier area was overlain on an Aster Global Digital Elevation Model and spot elevations of the Kukri erosion surface to the north and south of Byrd Glacier were mapped. The difference in elevation of the erosion surface across Byrd Glacier also shows an offset of c. 1 km with south side up. Results support a model of relatively uniform cooling and unroofing of the region with later, post-40 Ma fault displacement that uplifted the south side of Byrd Glacier relative to the north. |
format |
Text |
author |
D. J. Foley E. Stump M. Van Soest K. X. Whipple K. V. Hodges |
author_facet |
D. J. Foley E. Stump M. Van Soest K. X. Whipple K. V. Hodges |
author_sort |
D. J. Foley |
title |
Differential Movement across Byrd Glacier, Antarctica, as indicated by Apatite (U–Th)/He thermochronology and geomorphological analysis |
title_short |
Differential Movement across Byrd Glacier, Antarctica, as indicated by Apatite (U–Th)/He thermochronology and geomorphological analysis |
title_full |
Differential Movement across Byrd Glacier, Antarctica, as indicated by Apatite (U–Th)/He thermochronology and geomorphological analysis |
title_fullStr |
Differential Movement across Byrd Glacier, Antarctica, as indicated by Apatite (U–Th)/He thermochronology and geomorphological analysis |
title_full_unstemmed |
Differential Movement across Byrd Glacier, Antarctica, as indicated by Apatite (U–Th)/He thermochronology and geomorphological analysis |
title_sort |
differential movement across byrd glacier, antarctica, as indicated by apatite (u–th)/he thermochronology and geomorphological analysis |
publisher |
Geological Society of London |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.3453494 https://geolsoc.figshare.com/articles/journal_contribution/Differential_Movement_across_Byrd_Glacier_Antarctica_as_indicated_by_Apatite_U_Th_He_thermochronology_and_geomorphological___analysis/3453494 |
long_lat |
ENVELOPE(160.333,160.333,-80.250,-80.250) |
geographic |
Byrd Byrd Glacier Transantarctic Mountains |
geographic_facet |
Byrd Byrd Glacier Transantarctic Mountains |
genre |
Antarc* Antarctica Byrd Glacier |
genre_facet |
Antarc* Antarctica Byrd Glacier |
op_relation |
https://dx.doi.org/10.1144/sp381.25 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.3453494 https://doi.org/10.1144/sp381.25 |
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