Relative sea-level history of Marguerite Bay, Antarctic Peninsula derived from optically stimulated luminescence-dated beach cobbles
Calmette Bay within Marguerite Bay along the western side of the Antarctic Peninsula contains one of the most continuous flights of raised beaches described to date in Antarctica. Raised beaches extend to 40.8 m above sea level (masl) and are thought to reflect glacial isostatic adjustment due to th...
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Language: | English |
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PANGAEA
2013
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.818537 https://doi.org/10.1594/PANGAEA.818537 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.818537 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Age dated error Antarctic Peninsula Calculated Dose rate sediment ELEVATION Equivalent dose relative LATITUDE LONGITUDE NBP10-02_CB NBP10-02_Land OUTCROP Outcrop sample Overdispersion Sample ID Standard deviation |
spellingShingle |
Age dated error Antarctic Peninsula Calculated Dose rate sediment ELEVATION Equivalent dose relative LATITUDE LONGITUDE NBP10-02_CB NBP10-02_Land OUTCROP Outcrop sample Overdispersion Sample ID Standard deviation Simkins, Lauren M Simms, Alexander R DeWitt, Regina Relative sea-level history of Marguerite Bay, Antarctic Peninsula derived from optically stimulated luminescence-dated beach cobbles |
topic_facet |
Age dated error Antarctic Peninsula Calculated Dose rate sediment ELEVATION Equivalent dose relative LATITUDE LONGITUDE NBP10-02_CB NBP10-02_Land OUTCROP Outcrop sample Overdispersion Sample ID Standard deviation |
description |
Calmette Bay within Marguerite Bay along the western side of the Antarctic Peninsula contains one of the most continuous flights of raised beaches described to date in Antarctica. Raised beaches extend to 40.8 m above sea level (masl) and are thought to reflect glacial isostatic adjustment due to the retreat of the Antarctic Peninsula Ice Sheet. Using optically stimulated luminescence (OSL), we dated quartz extracts from cobble surfaces buried in raised beaches at Calmette Bay. The beaches are separated into upper and lower beaches based on OSL ages, geomorphology, and sedimentary fabric. The two sets of beaches are separated by a prominent scarp. One of our OSL ages from the upper beaches dates to 9.3 thousand years ago (ka; as of 1950) consistent with previous extrapolation of sea-level data and the time of ice retreat from inner Marguerite Bay. However, four of the seven ages from the upper beaches date to the timing of glaciation. We interpret these ages to represent reworking of beaches deposited prior to the Last Glacial Maximum (LGM) by advancing and retreating LGM ice. Ages from the lower beaches record relative sea-level fall due to Holocene glacial-isostatic adjustment. We suggest a Holocene marine limit of 21.7 masl with an age of 5.5-7.3 ka based on OSL ages from Calmette Bay and other sea-level constraints in the area. A marine limit at 21.7 masl implies half as much relative sea-level change in Marguerite Bay during the Holocene as suggested by previous sea-level reconstructions. No evidence for a relative sea-level signature of neoglacial events, such as a decrease followed by an increase in RSL fall due to ice advance and retreat associated with the Little Ice Age, is found within Marguerite Bay indicating either: (1) no significant neoglacial advances occurred within Marguerite Bay; (2) rheological heterogeneity allows part of the Antarctic Peninsula (i.e. the South Shetland Islands) to respond to rapid ice mass changes while other regions are incapable of responding to short-lived ice advances; ... |
format |
Dataset |
author |
Simkins, Lauren M Simms, Alexander R DeWitt, Regina |
author_facet |
Simkins, Lauren M Simms, Alexander R DeWitt, Regina |
author_sort |
Simkins, Lauren M |
title |
Relative sea-level history of Marguerite Bay, Antarctic Peninsula derived from optically stimulated luminescence-dated beach cobbles |
title_short |
Relative sea-level history of Marguerite Bay, Antarctic Peninsula derived from optically stimulated luminescence-dated beach cobbles |
title_full |
Relative sea-level history of Marguerite Bay, Antarctic Peninsula derived from optically stimulated luminescence-dated beach cobbles |
title_fullStr |
Relative sea-level history of Marguerite Bay, Antarctic Peninsula derived from optically stimulated luminescence-dated beach cobbles |
title_full_unstemmed |
Relative sea-level history of Marguerite Bay, Antarctic Peninsula derived from optically stimulated luminescence-dated beach cobbles |
title_sort |
relative sea-level history of marguerite bay, antarctic peninsula derived from optically stimulated luminescence-dated beach cobbles |
publisher |
PANGAEA |
publishDate |
2013 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.818537 https://doi.org/10.1594/PANGAEA.818537 |
op_coverage |
MEDIAN LATITUDE: -68.062784 * MEDIAN LONGITUDE: -67.165815 * SOUTH-BOUND LATITUDE: -68.064437 * WEST-BOUND LONGITUDE: -67.166902 * NORTH-BOUND LATITUDE: -68.061363 * EAST-BOUND LONGITUDE: -67.163977 * MINIMUM ELEVATION: 2.2 m a.s.l. * MAXIMUM ELEVATION: 40.8 m a.s.l. |
long_lat |
ENVELOPE(-67.150,-67.150,-68.050,-68.050) ENVELOPE(-67.167,-67.167,-68.050,-68.050) ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) ENVELOPE(-56.832,-56.832,49.583,49.583) ENVELOPE(-67.166902,-67.163977,-68.061363,-68.064437) |
geographic |
Antarctic Antarctic Peninsula Calmette Calmette Bay Marguerite Marguerite Bay South Shetland Islands The Antarctic The Beaches |
geographic_facet |
Antarctic Antarctic Peninsula Calmette Calmette Bay Marguerite Marguerite Bay South Shetland Islands The Antarctic The Beaches |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet South Shetland Islands |
op_source |
Supplement to: Simkins, Lauren M; Simms, Alexander R; DeWitt, Regina (2013): Relative sea-level history of Marguerite Bay, Antarctic Peninsula derived from optically stimulated luminescence-dated beach cobbles. Quaternary Science Reviews, 77, 141-155, https://doi.org/10.1016/j.quascirev.2013.07.027 |
op_relation |
Galbraith, R F; Roberts, R G; Laslett, M; Yoshida, H; Olley, J M (1999): Optical dating of single and multiple grains of quartz from Jinmium Rock Shelter, northern Australia: Part I, Experimental design and statistcal models. Archaeometry, 41(2), 339-364, https://doi.org/10.1111/j.1475-4754.1999.tb00987.x https://doi.pangaea.de/10.1594/PANGAEA.818537 https://doi.org/10.1594/PANGAEA.818537 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.818537 https://doi.org/10.1016/j.quascirev.2013.07.027 https://doi.org/10.1111/j.1475-4754.1999.tb00987.x |
_version_ |
1766252413226844160 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.818537 2023-05-15T13:49:51+02:00 Relative sea-level history of Marguerite Bay, Antarctic Peninsula derived from optically stimulated luminescence-dated beach cobbles Simkins, Lauren M Simms, Alexander R DeWitt, Regina MEDIAN LATITUDE: -68.062784 * MEDIAN LONGITUDE: -67.165815 * SOUTH-BOUND LATITUDE: -68.064437 * WEST-BOUND LONGITUDE: -67.166902 * NORTH-BOUND LATITUDE: -68.061363 * EAST-BOUND LONGITUDE: -67.163977 * MINIMUM ELEVATION: 2.2 m a.s.l. * MAXIMUM ELEVATION: 40.8 m a.s.l. 2013-08-27 text/tab-separated-values, 229 data points https://doi.pangaea.de/10.1594/PANGAEA.818537 https://doi.org/10.1594/PANGAEA.818537 en eng PANGAEA Galbraith, R F; Roberts, R G; Laslett, M; Yoshida, H; Olley, J M (1999): Optical dating of single and multiple grains of quartz from Jinmium Rock Shelter, northern Australia: Part I, Experimental design and statistcal models. Archaeometry, 41(2), 339-364, https://doi.org/10.1111/j.1475-4754.1999.tb00987.x https://doi.pangaea.de/10.1594/PANGAEA.818537 https://doi.org/10.1594/PANGAEA.818537 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Simkins, Lauren M; Simms, Alexander R; DeWitt, Regina (2013): Relative sea-level history of Marguerite Bay, Antarctic Peninsula derived from optically stimulated luminescence-dated beach cobbles. Quaternary Science Reviews, 77, 141-155, https://doi.org/10.1016/j.quascirev.2013.07.027 Age dated error Antarctic Peninsula Calculated Dose rate sediment ELEVATION Equivalent dose relative LATITUDE LONGITUDE NBP10-02_CB NBP10-02_Land OUTCROP Outcrop sample Overdispersion Sample ID Standard deviation Dataset 2013 ftpangaea https://doi.org/10.1594/PANGAEA.818537 https://doi.org/10.1016/j.quascirev.2013.07.027 https://doi.org/10.1111/j.1475-4754.1999.tb00987.x 2023-01-20T09:01:31Z Calmette Bay within Marguerite Bay along the western side of the Antarctic Peninsula contains one of the most continuous flights of raised beaches described to date in Antarctica. Raised beaches extend to 40.8 m above sea level (masl) and are thought to reflect glacial isostatic adjustment due to the retreat of the Antarctic Peninsula Ice Sheet. Using optically stimulated luminescence (OSL), we dated quartz extracts from cobble surfaces buried in raised beaches at Calmette Bay. The beaches are separated into upper and lower beaches based on OSL ages, geomorphology, and sedimentary fabric. The two sets of beaches are separated by a prominent scarp. One of our OSL ages from the upper beaches dates to 9.3 thousand years ago (ka; as of 1950) consistent with previous extrapolation of sea-level data and the time of ice retreat from inner Marguerite Bay. However, four of the seven ages from the upper beaches date to the timing of glaciation. We interpret these ages to represent reworking of beaches deposited prior to the Last Glacial Maximum (LGM) by advancing and retreating LGM ice. Ages from the lower beaches record relative sea-level fall due to Holocene glacial-isostatic adjustment. We suggest a Holocene marine limit of 21.7 masl with an age of 5.5-7.3 ka based on OSL ages from Calmette Bay and other sea-level constraints in the area. A marine limit at 21.7 masl implies half as much relative sea-level change in Marguerite Bay during the Holocene as suggested by previous sea-level reconstructions. No evidence for a relative sea-level signature of neoglacial events, such as a decrease followed by an increase in RSL fall due to ice advance and retreat associated with the Little Ice Age, is found within Marguerite Bay indicating either: (1) no significant neoglacial advances occurred within Marguerite Bay; (2) rheological heterogeneity allows part of the Antarctic Peninsula (i.e. the South Shetland Islands) to respond to rapid ice mass changes while other regions are incapable of responding to short-lived ice advances; ... Dataset Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet South Shetland Islands PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Antarctic Peninsula Calmette ENVELOPE(-67.150,-67.150,-68.050,-68.050) Calmette Bay ENVELOPE(-67.167,-67.167,-68.050,-68.050) Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) South Shetland Islands The Antarctic The Beaches ENVELOPE(-56.832,-56.832,49.583,49.583) ENVELOPE(-67.166902,-67.163977,-68.061363,-68.064437) |