Evidence for Eocene–Oligocene glaciation in the landscape of the East Greenland margin
International audience Assessing the onset and extent of Northern Hemisphere glaciation is required to understandCenozoic climate change and its impact on topography. While the onset of accelerated Cenozoicerosion is generally associated with the Quaternary at mid-latitudes, some high-latitudepassiv...
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Online Access: | https://insu.hal.science/insu-01365320 https://doi.org/10.1130/G38248.1 |
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ftunivrennes1hal:oai:HAL:insu-01365320v1 2024-02-11T10:03:25+01:00 Evidence for Eocene–Oligocene glaciation in the landscape of the East Greenland margin Bernard, Thomas Steer, Philippe Gallagher, Kerry Szulc, Adam Whitham, Andrew Johnson, Christopher, M Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Cambridge Arctic Shelf Programme (CASP) University of Cambridge UK (CAM) 2016 https://insu.hal.science/insu-01365320 https://doi.org/10.1130/G38248.1 en eng HAL CCSD Geological Society of America info:eu-repo/semantics/altIdentifier/doi/10.1130/G38248.1 insu-01365320 https://insu.hal.science/insu-01365320 doi:10.1130/G38248.1 ISSN: 0091-7613 EISSN: 1943-2682 Geology https://insu.hal.science/insu-01365320 Geology, 2016, 44 (11), pp.895-898 ⟨10.1130/G38248.1⟩ [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry info:eu-repo/semantics/article Journal articles 2016 ftunivrennes1hal https://doi.org/10.1130/G38248.1 2024-01-23T23:54:59Z International audience Assessing the onset and extent of Northern Hemisphere glaciation is required to understandCenozoic climate change and its impact on topography. While the onset of accelerated Cenozoicerosion is generally associated with the Quaternary at mid-latitudes, some high-latitudepassive margins may have undergone earlier glaciation starting at 38–30 Ma or even 45 Ma.Here we document a rapid phase of exhumation in the East Greenland margin between 68°Nand 76°N starting at 30 ± 5 Ma. The timing is coincident with the dramatic worldwide fall ofsurface temperature at the Eocene-Oligocene transition. Our inference is based on apatitefission track and apatite helium data. We suggest that a transition from an Eocene fluvial toan Oligocene glacial-dominated landscape triggered a period of enhanced erosion. This studyprovides the first onshore potential evidence of the onset of continental ice in East Greenlandmargin at the Eocene-Oligocene transition (ca. 34 Ma), contemporaneously with the onset ofAntarctica glaciation and erosion. Our interpretation is consistent with that based on the oldestice-rafted debris found in the sedimentary records offshore East Greenland and impliesthat East Greenland exhibits the oldest onshore record of Cenozoic glacial erosion on Earth. Article in Journal/Newspaper East Greenland Greenland Université de Rennes 1: Publications scientifiques (HAL) Greenland Geology 44 11 895 898 |
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Open Polar |
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Université de Rennes 1: Publications scientifiques (HAL) |
op_collection_id |
ftunivrennes1hal |
language |
English |
topic |
[SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
spellingShingle |
[SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry Bernard, Thomas Steer, Philippe Gallagher, Kerry Szulc, Adam Whitham, Andrew Johnson, Christopher, M Evidence for Eocene–Oligocene glaciation in the landscape of the East Greenland margin |
topic_facet |
[SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
description |
International audience Assessing the onset and extent of Northern Hemisphere glaciation is required to understandCenozoic climate change and its impact on topography. While the onset of accelerated Cenozoicerosion is generally associated with the Quaternary at mid-latitudes, some high-latitudepassive margins may have undergone earlier glaciation starting at 38–30 Ma or even 45 Ma.Here we document a rapid phase of exhumation in the East Greenland margin between 68°Nand 76°N starting at 30 ± 5 Ma. The timing is coincident with the dramatic worldwide fall ofsurface temperature at the Eocene-Oligocene transition. Our inference is based on apatitefission track and apatite helium data. We suggest that a transition from an Eocene fluvial toan Oligocene glacial-dominated landscape triggered a period of enhanced erosion. This studyprovides the first onshore potential evidence of the onset of continental ice in East Greenlandmargin at the Eocene-Oligocene transition (ca. 34 Ma), contemporaneously with the onset ofAntarctica glaciation and erosion. Our interpretation is consistent with that based on the oldestice-rafted debris found in the sedimentary records offshore East Greenland and impliesthat East Greenland exhibits the oldest onshore record of Cenozoic glacial erosion on Earth. |
author2 |
Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Cambridge Arctic Shelf Programme (CASP) University of Cambridge UK (CAM) |
format |
Article in Journal/Newspaper |
author |
Bernard, Thomas Steer, Philippe Gallagher, Kerry Szulc, Adam Whitham, Andrew Johnson, Christopher, M |
author_facet |
Bernard, Thomas Steer, Philippe Gallagher, Kerry Szulc, Adam Whitham, Andrew Johnson, Christopher, M |
author_sort |
Bernard, Thomas |
title |
Evidence for Eocene–Oligocene glaciation in the landscape of the East Greenland margin |
title_short |
Evidence for Eocene–Oligocene glaciation in the landscape of the East Greenland margin |
title_full |
Evidence for Eocene–Oligocene glaciation in the landscape of the East Greenland margin |
title_fullStr |
Evidence for Eocene–Oligocene glaciation in the landscape of the East Greenland margin |
title_full_unstemmed |
Evidence for Eocene–Oligocene glaciation in the landscape of the East Greenland margin |
title_sort |
evidence for eocene–oligocene glaciation in the landscape of the east greenland margin |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://insu.hal.science/insu-01365320 https://doi.org/10.1130/G38248.1 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland |
genre_facet |
East Greenland Greenland |
op_source |
ISSN: 0091-7613 EISSN: 1943-2682 Geology https://insu.hal.science/insu-01365320 Geology, 2016, 44 (11), pp.895-898 ⟨10.1130/G38248.1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1130/G38248.1 insu-01365320 https://insu.hal.science/insu-01365320 doi:10.1130/G38248.1 |
op_doi |
https://doi.org/10.1130/G38248.1 |
container_title |
Geology |
container_volume |
44 |
container_issue |
11 |
container_start_page |
895 |
op_container_end_page |
898 |
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1790599661649657856 |