Last interglacial sea level along the Patagonian coast

As part of the World Atlas of Last Interglacial Shorelines (WALIS), we critically review existing chronologically constrained last interglacial sea level indicators along the coast of Patagonia in Argentina, South America. Since Charles Darwin's voyages on the Beagle in the 1830s, the staircase...

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Main Authors: Gowan, Evan J., Rovere, Alessio, Ryan, Deirdre D., Stocchi, Paolo
Format: Conference Object
Language:unknown
Published: 2019
Subjects:
Online Access:https://epic.awi.de/id/eprint/51226/
https://epic.awi.de/id/eprint/51226/1/poster-surf.pdf
https://hdl.handle.net/10013/epic.6ebb79b1-2bf8-419b-8d38-cc83160c5af6
id ftawi:oai:epic.awi.de:51226
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spelling ftawi:oai:epic.awi.de:51226 2024-09-15T17:42:51+00:00 Last interglacial sea level along the Patagonian coast Gowan, Evan J. Rovere, Alessio Ryan, Deirdre D. Stocchi, Paolo 2019-07-21 application/pdf https://epic.awi.de/id/eprint/51226/ https://epic.awi.de/id/eprint/51226/1/poster-surf.pdf https://hdl.handle.net/10013/epic.6ebb79b1-2bf8-419b-8d38-cc83160c5af6 unknown https://epic.awi.de/id/eprint/51226/1/poster-surf.pdf Gowan, E. J. orcid:0000-0002-0119-9440 , Rovere, A. orcid:0000-0001-5575-1168 , Ryan, D. D. orcid:0000-0002-1931-9033 and Stocchi, P. (2019) Last interglacial sea level along the Patagonian coast , PALSEA Annual Meeting, Dublin, Ireland, 21 July 2019 - 23 July 2019 . hdl:10013/epic.6ebb79b1-2bf8-419b-8d38-cc83160c5af6 EPIC3PALSEA Annual Meeting, Dublin, Ireland, 2019-07-21-2019-07-23 Conference notRev 2019 ftawi 2024-06-24T04:23:24Z As part of the World Atlas of Last Interglacial Shorelines (WALIS), we critically review existing chronologically constrained last interglacial sea level indicators along the coast of Patagonia in Argentina, South America. Since Charles Darwin's voyages on the Beagle in the 1830s, the staircase-like shoreline platforms along the Patagonian coast have been used as evidence that it has been subject to uplift. Paleo-sea level indicators, ranging between about 7 and 24 m have been attributed to the Last Interglacial on the basis of electron spin resonance and U/Th dating on mollusc shells, and shows remarkable continuity along the entire coast. If the age of these indicators are accurate, then it would indicate that there is a significant uplift rate during the past 120,000 years, since these values exceed the generally accepted peak globally averaged sea level for the last interglacial. However, the Patagonian coast is close enough to the Antarctic and Patagonian ice sheets that there could be a signal from glacial-isostatic adjustment (GIA). This might be an alternative explanation for these higher than average paleo-sea level values. We test the magnitude of the effect of GIA on the coast of Patagonia using a simple ice reconstruction spanning the past two glacial cycles, using a variety of Earth models. Conference Object Antarc* Antarctic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
institution Open Polar
collection Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
op_collection_id ftawi
language unknown
description As part of the World Atlas of Last Interglacial Shorelines (WALIS), we critically review existing chronologically constrained last interglacial sea level indicators along the coast of Patagonia in Argentina, South America. Since Charles Darwin's voyages on the Beagle in the 1830s, the staircase-like shoreline platforms along the Patagonian coast have been used as evidence that it has been subject to uplift. Paleo-sea level indicators, ranging between about 7 and 24 m have been attributed to the Last Interglacial on the basis of electron spin resonance and U/Th dating on mollusc shells, and shows remarkable continuity along the entire coast. If the age of these indicators are accurate, then it would indicate that there is a significant uplift rate during the past 120,000 years, since these values exceed the generally accepted peak globally averaged sea level for the last interglacial. However, the Patagonian coast is close enough to the Antarctic and Patagonian ice sheets that there could be a signal from glacial-isostatic adjustment (GIA). This might be an alternative explanation for these higher than average paleo-sea level values. We test the magnitude of the effect of GIA on the coast of Patagonia using a simple ice reconstruction spanning the past two glacial cycles, using a variety of Earth models.
format Conference Object
author Gowan, Evan J.
Rovere, Alessio
Ryan, Deirdre D.
Stocchi, Paolo
spellingShingle Gowan, Evan J.
Rovere, Alessio
Ryan, Deirdre D.
Stocchi, Paolo
Last interglacial sea level along the Patagonian coast
author_facet Gowan, Evan J.
Rovere, Alessio
Ryan, Deirdre D.
Stocchi, Paolo
author_sort Gowan, Evan J.
title Last interglacial sea level along the Patagonian coast
title_short Last interglacial sea level along the Patagonian coast
title_full Last interglacial sea level along the Patagonian coast
title_fullStr Last interglacial sea level along the Patagonian coast
title_full_unstemmed Last interglacial sea level along the Patagonian coast
title_sort last interglacial sea level along the patagonian coast
publishDate 2019
url https://epic.awi.de/id/eprint/51226/
https://epic.awi.de/id/eprint/51226/1/poster-surf.pdf
https://hdl.handle.net/10013/epic.6ebb79b1-2bf8-419b-8d38-cc83160c5af6
genre Antarc*
Antarctic
genre_facet Antarc*
Antarctic
op_source EPIC3PALSEA Annual Meeting, Dublin, Ireland, 2019-07-21-2019-07-23
op_relation https://epic.awi.de/id/eprint/51226/1/poster-surf.pdf
Gowan, E. J. orcid:0000-0002-0119-9440 , Rovere, A. orcid:0000-0001-5575-1168 , Ryan, D. D. orcid:0000-0002-1931-9033 and Stocchi, P. (2019) Last interglacial sea level along the Patagonian coast , PALSEA Annual Meeting, Dublin, Ireland, 21 July 2019 - 23 July 2019 . hdl:10013/epic.6ebb79b1-2bf8-419b-8d38-cc83160c5af6
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