Late Cretaceous to Paleogene vegetation and terrestrial climate change of the Amundsen Sea Embayment, West Antarctica
The past vegetation and climate of West Antarctica and the evolution of its highly sensitive and dynamic ice sheet are poorly constrained by geological data. The few existing far-field data, and even fewer proximal records, indicate a major ice-sheet build-up in West Antarctica from the Oligocene to...
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ftawi:oai:epic.awi.de:46580 2023-05-15T13:23:37+02:00 Late Cretaceous to Paleogene vegetation and terrestrial climate change of the Amundsen Sea Embayment, West Antarctica Salzmann, Ulrich Bohaty, Steve Bowman, Vanessa Bickert, Thorsten Francis, Jane Frederichs, Thomas Gohl, Karsten Hillenbrand, Claus-Dieter Klages, Johann Philipp Kuhn, Gerhard Titschnack, Jürgen 2018 https://epic.awi.de/id/eprint/46580/ https://hdl.handle.net/10013/epic.6138fc21-6fb3-42c5-bdaa-1a6ae629912d unknown Salzmann, U. , Bohaty, S. , Bowman, V. , Bickert, T. , Francis, J. , Frederichs, T. , Gohl, K. orcid:0000-0002-9558-2116 , Hillenbrand, C. D. , Klages, J. P. orcid:0000-0003-0968-1183 , Kuhn, G. orcid:0000-0001-6069-7485 and Titschnack, J. (2018) Late Cretaceous to Paleogene vegetation and terrestrial climate change of the Amundsen Sea Embayment, West Antarctica , 10th European Palaeobotany and Palynology Conference, Dublin, 12 August 2018 - 17 August 2018 . hdl:10013/epic.6138fc21-6fb3-42c5-bdaa-1a6ae629912d EPIC310th European Palaeobotany and Palynology Conference, Dublin, 2018-08-12-2018-08-17 Conference notRev 2018 ftawi 2021-12-24T15:43:38Z The past vegetation and climate of West Antarctica and the evolution of its highly sensitive and dynamic ice sheet are poorly constrained by geological data. The few existing far-field data, and even fewer proximal records, indicate a major ice-sheet build-up in West Antarctica from the Oligocene to the Miocene, with partial or even complete ice-sheet collapses during warm Late Cenozoic intervals with near-modern atmospheric CO2-concentrations. Here we present first palynological results from the MeBo70 seabed drill cores collected in early 2017 from the Amundsen Sea shelf. The cores contain unconsolidated to highly consolidated sediments of Cretaceous to Holocene age. Preliminary analyses of pollen, spores and dinoflagellate cysts indicate that during the Cretaceous and early Paleogene the Amundsen Sea Embayment was covered by warm-temperate and temperate forests. The paper will focus on Turonian to Santonian (ca. 93-85 Ma) peat layers in the oldest sections of the cores, which contain micro- and macrofossils documenting the evolution of a highly diverse, conifer-rich swamp forest during the Late Cretaceous. Conference Object Amundsen Sea Antarc* Antarctica Ice Sheet West Antarctica Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Amundsen Sea West Antarctica |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The past vegetation and climate of West Antarctica and the evolution of its highly sensitive and dynamic ice sheet are poorly constrained by geological data. The few existing far-field data, and even fewer proximal records, indicate a major ice-sheet build-up in West Antarctica from the Oligocene to the Miocene, with partial or even complete ice-sheet collapses during warm Late Cenozoic intervals with near-modern atmospheric CO2-concentrations. Here we present first palynological results from the MeBo70 seabed drill cores collected in early 2017 from the Amundsen Sea shelf. The cores contain unconsolidated to highly consolidated sediments of Cretaceous to Holocene age. Preliminary analyses of pollen, spores and dinoflagellate cysts indicate that during the Cretaceous and early Paleogene the Amundsen Sea Embayment was covered by warm-temperate and temperate forests. The paper will focus on Turonian to Santonian (ca. 93-85 Ma) peat layers in the oldest sections of the cores, which contain micro- and macrofossils documenting the evolution of a highly diverse, conifer-rich swamp forest during the Late Cretaceous. |
format |
Conference Object |
author |
Salzmann, Ulrich Bohaty, Steve Bowman, Vanessa Bickert, Thorsten Francis, Jane Frederichs, Thomas Gohl, Karsten Hillenbrand, Claus-Dieter Klages, Johann Philipp Kuhn, Gerhard Titschnack, Jürgen |
spellingShingle |
Salzmann, Ulrich Bohaty, Steve Bowman, Vanessa Bickert, Thorsten Francis, Jane Frederichs, Thomas Gohl, Karsten Hillenbrand, Claus-Dieter Klages, Johann Philipp Kuhn, Gerhard Titschnack, Jürgen Late Cretaceous to Paleogene vegetation and terrestrial climate change of the Amundsen Sea Embayment, West Antarctica |
author_facet |
Salzmann, Ulrich Bohaty, Steve Bowman, Vanessa Bickert, Thorsten Francis, Jane Frederichs, Thomas Gohl, Karsten Hillenbrand, Claus-Dieter Klages, Johann Philipp Kuhn, Gerhard Titschnack, Jürgen |
author_sort |
Salzmann, Ulrich |
title |
Late Cretaceous to Paleogene vegetation and terrestrial climate change of the Amundsen Sea Embayment, West Antarctica |
title_short |
Late Cretaceous to Paleogene vegetation and terrestrial climate change of the Amundsen Sea Embayment, West Antarctica |
title_full |
Late Cretaceous to Paleogene vegetation and terrestrial climate change of the Amundsen Sea Embayment, West Antarctica |
title_fullStr |
Late Cretaceous to Paleogene vegetation and terrestrial climate change of the Amundsen Sea Embayment, West Antarctica |
title_full_unstemmed |
Late Cretaceous to Paleogene vegetation and terrestrial climate change of the Amundsen Sea Embayment, West Antarctica |
title_sort |
late cretaceous to paleogene vegetation and terrestrial climate change of the amundsen sea embayment, west antarctica |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/46580/ https://hdl.handle.net/10013/epic.6138fc21-6fb3-42c5-bdaa-1a6ae629912d |
geographic |
Amundsen Sea West Antarctica |
geographic_facet |
Amundsen Sea West Antarctica |
genre |
Amundsen Sea Antarc* Antarctica Ice Sheet West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctica Ice Sheet West Antarctica |
op_source |
EPIC310th European Palaeobotany and Palynology Conference, Dublin, 2018-08-12-2018-08-17 |
op_relation |
Salzmann, U. , Bohaty, S. , Bowman, V. , Bickert, T. , Francis, J. , Frederichs, T. , Gohl, K. orcid:0000-0002-9558-2116 , Hillenbrand, C. D. , Klages, J. P. orcid:0000-0003-0968-1183 , Kuhn, G. orcid:0000-0001-6069-7485 and Titschnack, J. (2018) Late Cretaceous to Paleogene vegetation and terrestrial climate change of the Amundsen Sea Embayment, West Antarctica , 10th European Palaeobotany and Palynology Conference, Dublin, 12 August 2018 - 17 August 2018 . hdl:10013/epic.6138fc21-6fb3-42c5-bdaa-1a6ae629912d |
_version_ |
1766373631339790336 |