Integrated biomagnetochronology for the Palaeogene of ODP Hole 647A: implications for correlating palaeoceanographic events from high to low latitudes
Lower Eocene to Oligocene microfossil-rich hemipelagic sediments in ODP Hole 647A, southern Labrador Sea, provide a strategic section for resolving the early history of high North Atlantic climates and ocean circulation, and for correlating with carbonate-poor lower Cenozoic sediments in the Arctic...
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Geological Society of London
2016
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ftdatacite:10.6084/m9.figshare.3453119.v1 2023-05-15T15:07:55+02:00 Integrated biomagnetochronology for the Palaeogene of ODP Hole 647A: implications for correlating palaeoceanographic events from high to low latitudes J. V. Firth J. S. Eldrett I. C. Harding H. K. Coxall B. S. Wade 2016 https://dx.doi.org/10.6084/m9.figshare.3453119.v1 https://geolsoc.figshare.com/articles/dataset/Integrated_biomagnetochronology_for_the_Palaeogene_of_ODP_Hole_647A_implications_for_correlating_palaeoceanographic_events___from_high_to_low_latitudes/3453119/1 unknown Geological Society of London https://dx.doi.org/10.1144/sp373.9 https://dx.doi.org/10.6084/m9.figshare.3453119 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.3453119.v1 https://doi.org/10.1144/sp373.9 https://doi.org/10.6084/m9.figshare.3453119 2021-11-05T12:55:41Z Lower Eocene to Oligocene microfossil-rich hemipelagic sediments in ODP Hole 647A, southern Labrador Sea, provide a strategic section for resolving the early history of high North Atlantic climates and ocean circulation, and for correlating with carbonate-poor lower Cenozoic sediments in the Arctic and Nordic seas. Our new, integrated palaeomagneto- and multigroup biostratigraphy (63 dinoflagellate cyst, calcareous nannofossil, planktonic foraminifer and diatom datums) significantly improves Site 647 chronostratigraphy and provides a framework for future studies. This new age model, coupled with provisional δ 18 O analyses, provides greater confidence in the location of significant ocean-climate events at this site, including the Eocene–Oligocene transition and the Middle Eocene Climatic Optimum. Early Eocene hyperthermals may also be present near the base of the section. Palaeomagnetic age control is significantly improved in the Eocene, but not in the Oligocene. Revised estimates of sedimentation and biogenic flux indicate changes in supply and preservation that may be climatically controlled. A Lower to Middle Eocene hiatus is more precisely constrained, with a c. 4 million year duration. Age and depth errors quantify the age uncertainties throughout the section. Our revised age model will play an important role in stratigraphic correlation between very high latitude and lower latitude sites. Dataset Arctic Labrador Sea Nordic Seas North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Arctic |
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 J. V. Firth J. S. Eldrett I. C. Harding H. K. Coxall B. S. Wade Integrated biomagnetochronology for the Palaeogene of ODP Hole 647A: implications for correlating palaeoceanographic events from high to low latitudes |
topic_facet |
Geology FOS Earth and related environmental sciences |
description |
Lower Eocene to Oligocene microfossil-rich hemipelagic sediments in ODP Hole 647A, southern Labrador Sea, provide a strategic section for resolving the early history of high North Atlantic climates and ocean circulation, and for correlating with carbonate-poor lower Cenozoic sediments in the Arctic and Nordic seas. Our new, integrated palaeomagneto- and multigroup biostratigraphy (63 dinoflagellate cyst, calcareous nannofossil, planktonic foraminifer and diatom datums) significantly improves Site 647 chronostratigraphy and provides a framework for future studies. This new age model, coupled with provisional δ 18 O analyses, provides greater confidence in the location of significant ocean-climate events at this site, including the Eocene–Oligocene transition and the Middle Eocene Climatic Optimum. Early Eocene hyperthermals may also be present near the base of the section. Palaeomagnetic age control is significantly improved in the Eocene, but not in the Oligocene. Revised estimates of sedimentation and biogenic flux indicate changes in supply and preservation that may be climatically controlled. A Lower to Middle Eocene hiatus is more precisely constrained, with a c. 4 million year duration. Age and depth errors quantify the age uncertainties throughout the section. Our revised age model will play an important role in stratigraphic correlation between very high latitude and lower latitude sites. |
format |
Dataset |
author |
J. V. Firth J. S. Eldrett I. C. Harding H. K. Coxall B. S. Wade |
author_facet |
J. V. Firth J. S. Eldrett I. C. Harding H. K. Coxall B. S. Wade |
author_sort |
J. V. Firth |
title |
Integrated biomagnetochronology for the Palaeogene of ODP Hole 647A: implications for correlating palaeoceanographic events from high to low latitudes |
title_short |
Integrated biomagnetochronology for the Palaeogene of ODP Hole 647A: implications for correlating palaeoceanographic events from high to low latitudes |
title_full |
Integrated biomagnetochronology for the Palaeogene of ODP Hole 647A: implications for correlating palaeoceanographic events from high to low latitudes |
title_fullStr |
Integrated biomagnetochronology for the Palaeogene of ODP Hole 647A: implications for correlating palaeoceanographic events from high to low latitudes |
title_full_unstemmed |
Integrated biomagnetochronology for the Palaeogene of ODP Hole 647A: implications for correlating palaeoceanographic events from high to low latitudes |
title_sort |
integrated biomagnetochronology for the palaeogene of odp hole 647a: implications for correlating palaeoceanographic events from high to low latitudes |
publisher |
Geological Society of London |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.3453119.v1 https://geolsoc.figshare.com/articles/dataset/Integrated_biomagnetochronology_for_the_Palaeogene_of_ODP_Hole_647A_implications_for_correlating_palaeoceanographic_events___from_high_to_low_latitudes/3453119/1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Labrador Sea Nordic Seas North Atlantic |
genre_facet |
Arctic Labrador Sea Nordic Seas North Atlantic |
op_relation |
https://dx.doi.org/10.1144/sp373.9 https://dx.doi.org/10.6084/m9.figshare.3453119 |
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.3453119.v1 https://doi.org/10.1144/sp373.9 https://doi.org/10.6084/m9.figshare.3453119 |
_version_ |
1766339352161419264 |