Elevated marine terraces from Eleuthera (Bahamas) and Bermuda: sedimentological, petrographic and geochronological evidence for important deglaciation events during the middle Pleistocene
Sedimentological, petrographic and geochronological (uranium series amino acid racemization dating) study of middle Pleistocene deposits from the archipelagos of Bermuda and The Bahamas revealed the occurence of marine terraces of possible stage 11 age at +2, +7 and over 20 m above mean sea level. C...
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ftunivgeneve:oai:unige.ch:unige:165052 2023-05-15T16:40:59+02:00 Elevated marine terraces from Eleuthera (Bahamas) and Bermuda: sedimentological, petrographic and geochronological evidence for important deglaciation events during the middle Pleistocene Kindler, Pascal Hearty, Paul J 2000 https://archive-ouverte.unige.ch/unige:165052 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1016/S0921-8181(99)00068-5 unige:165052 https://archive-ouverte.unige.ch/unige:165052 info:eu-repo/semantics/restrictedAccess ISSN: 0921-8181 Global and planetary change, Vol. 24, No 1 (2000) pp. 41-58 info:eu-repo/classification/ddc/550 Bahamas Bermuda Middle Pleistocene Marine terraces Geochronology Sedimentology Sedimentary petrography Eustacy Ice caps Text Article scientifique info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2000 ftunivgeneve https://doi.org/10.1016/S0921-8181(99)00068-5 2022-11-21T00:39:10Z Sedimentological, petrographic and geochronological (uranium series amino acid racemization dating) study of middle Pleistocene deposits from the archipelagos of Bermuda and The Bahamas revealed the occurence of marine terraces of possible stage 11 age at +2, +7 and over 20 m above mean sea level. Considering the tectonic stability of the investigated regions, these elevated deposits likely correspond to three discrete, higher than present sea levels during this time period, which is regarded by many as the warmest interglacial of the late Quaternary. It follows that warmer than present climatic conditions might profoundly modify water distribution between the cryosphere and the oceans. The punctuated nature of our stratigraphy further suggests that future deglaciation might not be a smooth process, but could be marked by rapid ice-sheet breakdown leading to abrupt, meter-scale sea-level rises. Given the long period of warm climate and stable sea level of the past few thousands of years and CO 2 loading of the atmosphere, the probability of a rapid eustatic rise must be seriously considered. Article in Journal/Newspaper Ice Sheet Université de Genève: Archive ouverte UNIGE Global and Planetary Change 24 1 41 58 |
institution |
Open Polar |
collection |
Université de Genève: Archive ouverte UNIGE |
op_collection_id |
ftunivgeneve |
language |
English |
topic |
info:eu-repo/classification/ddc/550 Bahamas Bermuda Middle Pleistocene Marine terraces Geochronology Sedimentology Sedimentary petrography Eustacy Ice caps |
spellingShingle |
info:eu-repo/classification/ddc/550 Bahamas Bermuda Middle Pleistocene Marine terraces Geochronology Sedimentology Sedimentary petrography Eustacy Ice caps Kindler, Pascal Hearty, Paul J Elevated marine terraces from Eleuthera (Bahamas) and Bermuda: sedimentological, petrographic and geochronological evidence for important deglaciation events during the middle Pleistocene |
topic_facet |
info:eu-repo/classification/ddc/550 Bahamas Bermuda Middle Pleistocene Marine terraces Geochronology Sedimentology Sedimentary petrography Eustacy Ice caps |
description |
Sedimentological, petrographic and geochronological (uranium series amino acid racemization dating) study of middle Pleistocene deposits from the archipelagos of Bermuda and The Bahamas revealed the occurence of marine terraces of possible stage 11 age at +2, +7 and over 20 m above mean sea level. Considering the tectonic stability of the investigated regions, these elevated deposits likely correspond to three discrete, higher than present sea levels during this time period, which is regarded by many as the warmest interglacial of the late Quaternary. It follows that warmer than present climatic conditions might profoundly modify water distribution between the cryosphere and the oceans. The punctuated nature of our stratigraphy further suggests that future deglaciation might not be a smooth process, but could be marked by rapid ice-sheet breakdown leading to abrupt, meter-scale sea-level rises. Given the long period of warm climate and stable sea level of the past few thousands of years and CO 2 loading of the atmosphere, the probability of a rapid eustatic rise must be seriously considered. |
format |
Article in Journal/Newspaper |
author |
Kindler, Pascal Hearty, Paul J |
author_facet |
Kindler, Pascal Hearty, Paul J |
author_sort |
Kindler, Pascal |
title |
Elevated marine terraces from Eleuthera (Bahamas) and Bermuda: sedimentological, petrographic and geochronological evidence for important deglaciation events during the middle Pleistocene |
title_short |
Elevated marine terraces from Eleuthera (Bahamas) and Bermuda: sedimentological, petrographic and geochronological evidence for important deglaciation events during the middle Pleistocene |
title_full |
Elevated marine terraces from Eleuthera (Bahamas) and Bermuda: sedimentological, petrographic and geochronological evidence for important deglaciation events during the middle Pleistocene |
title_fullStr |
Elevated marine terraces from Eleuthera (Bahamas) and Bermuda: sedimentological, petrographic and geochronological evidence for important deglaciation events during the middle Pleistocene |
title_full_unstemmed |
Elevated marine terraces from Eleuthera (Bahamas) and Bermuda: sedimentological, petrographic and geochronological evidence for important deglaciation events during the middle Pleistocene |
title_sort |
elevated marine terraces from eleuthera (bahamas) and bermuda: sedimentological, petrographic and geochronological evidence for important deglaciation events during the middle pleistocene |
publishDate |
2000 |
url |
https://archive-ouverte.unige.ch/unige:165052 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
ISSN: 0921-8181 Global and planetary change, Vol. 24, No 1 (2000) pp. 41-58 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0921-8181(99)00068-5 unige:165052 https://archive-ouverte.unige.ch/unige:165052 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/S0921-8181(99)00068-5 |
container_title |
Global and Planetary Change |
container_volume |
24 |
container_issue |
1 |
container_start_page |
41 |
op_container_end_page |
58 |
_version_ |
1766031414989422592 |