Mid-Jurassic age for the Botany Bay Group: implications for Weddell Sea Basin creation and southern hemisphere biostratigraphy
New U–Pb zircon ion-microprobe ages from the alluvial conglomerates and flood plain sediments of the Botany Bay Group demonstrate that sedimentation occurred at c. 167 Ma, coeval with rift-related silicic volcanism in the northern Antarctic Peninsula. In contrast, rift-related volcanism and sediment...
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Geological Society of London
2016
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ftdatacite:10.6084/m9.figshare.3454298 2023-05-15T13:34:28+02:00 Mid-Jurassic age for the Botany Bay Group: implications for Weddell Sea Basin creation and southern hemisphere biostratigraphy Hunter, Morag A. Cantrill, David J. Flowerdew, Michael J. Millar, Ian L. 2016 https://dx.doi.org/10.6084/m9.figshare.3454298 https://geolsoc.figshare.com/articles/dataset/Mid-Jurassic_age_for_the_Botany_Bay_Group_implications_for_Weddell_Sea_Basin_creation_and_southern_hemisphere_biostratigraphy/3454298 unknown Geological Society of London https://dx.doi.org/10.1144/0016-764905-051 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Geology FOS Earth and related environmental sciences dataset Dataset 2016 ftdatacite https://doi.org/10.6084/m9.figshare.3454298 https://doi.org/10.1144/0016-764905-051 2021-11-05T12:55:41Z New U–Pb zircon ion-microprobe ages from the alluvial conglomerates and flood plain sediments of the Botany Bay Group demonstrate that sedimentation occurred at c. 167 Ma, coeval with rift-related silicic volcanism in the northern Antarctic Peninsula. In contrast, rift-related volcanism and sedimentation in the southern Antarctic Peninsula (Latady Basin) occurred at c. 183 Ma. The new data indicate that syn-rift sedimentation and volcanism was diachronous from south to north, consistent with early opening of the Weddell Sea embayment by anti-clockwise rotation of the Antarctic Peninsula in the Mid-Jurassic. A definitive date for the Botany Bay Group floras has important implications for Southern Hemisphere biostratigraphic correlations. Dataset Antarc* Antarctic Antarctic Peninsula Weddell Sea DataCite Metadata Store (German National Library of Science and Technology) Antarctic Antarctic Peninsula Botany Bay ENVELOPE(-57.892,-57.892,-63.678,-63.678) Latady ENVELOPE(-65.833,-65.833,-75.500,-75.500) The Antarctic Weddell Weddell Sea |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Geology FOS Earth and related environmental sciences |
spellingShingle |
Geology FOS Earth and related environmental sciences Hunter, Morag A. Cantrill, David J. Flowerdew, Michael J. Millar, Ian L. Mid-Jurassic age for the Botany Bay Group: implications for Weddell Sea Basin creation and southern hemisphere biostratigraphy |
topic_facet |
Geology FOS Earth and related environmental sciences |
description |
New U–Pb zircon ion-microprobe ages from the alluvial conglomerates and flood plain sediments of the Botany Bay Group demonstrate that sedimentation occurred at c. 167 Ma, coeval with rift-related silicic volcanism in the northern Antarctic Peninsula. In contrast, rift-related volcanism and sedimentation in the southern Antarctic Peninsula (Latady Basin) occurred at c. 183 Ma. The new data indicate that syn-rift sedimentation and volcanism was diachronous from south to north, consistent with early opening of the Weddell Sea embayment by anti-clockwise rotation of the Antarctic Peninsula in the Mid-Jurassic. A definitive date for the Botany Bay Group floras has important implications for Southern Hemisphere biostratigraphic correlations. |
format |
Dataset |
author |
Hunter, Morag A. Cantrill, David J. Flowerdew, Michael J. Millar, Ian L. |
author_facet |
Hunter, Morag A. Cantrill, David J. Flowerdew, Michael J. Millar, Ian L. |
author_sort |
Hunter, Morag A. |
title |
Mid-Jurassic age for the Botany Bay Group: implications for Weddell Sea Basin creation and southern hemisphere biostratigraphy |
title_short |
Mid-Jurassic age for the Botany Bay Group: implications for Weddell Sea Basin creation and southern hemisphere biostratigraphy |
title_full |
Mid-Jurassic age for the Botany Bay Group: implications for Weddell Sea Basin creation and southern hemisphere biostratigraphy |
title_fullStr |
Mid-Jurassic age for the Botany Bay Group: implications for Weddell Sea Basin creation and southern hemisphere biostratigraphy |
title_full_unstemmed |
Mid-Jurassic age for the Botany Bay Group: implications for Weddell Sea Basin creation and southern hemisphere biostratigraphy |
title_sort |
mid-jurassic age for the botany bay group: implications for weddell sea basin creation and southern hemisphere biostratigraphy |
publisher |
Geological Society of London |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.3454298 https://geolsoc.figshare.com/articles/dataset/Mid-Jurassic_age_for_the_Botany_Bay_Group_implications_for_Weddell_Sea_Basin_creation_and_southern_hemisphere_biostratigraphy/3454298 |
long_lat |
ENVELOPE(-57.892,-57.892,-63.678,-63.678) ENVELOPE(-65.833,-65.833,-75.500,-75.500) |
geographic |
Antarctic Antarctic Peninsula Botany Bay Latady The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Peninsula Botany Bay Latady The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Weddell Sea |
op_relation |
https://dx.doi.org/10.1144/0016-764905-051 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.3454298 https://doi.org/10.1144/0016-764905-051 |
_version_ |
1766053185767604224 |