Organic-rich sedimentation in the South Pacific Ocean associated with Late Paleocene climatic cooling
A distinctive organic-rich marine mudstone of Late Paleocene age occurs in most of New Zealand's sedimentary basins and has been identified as a potential source rock for oil and gas. Identified as the Waipawa Formation in the East Coast Basin and the Tartan Formation in the Great South and Can...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/309679 2023-07-23T04:15:32+02:00 Organic-rich sedimentation in the South Pacific Ocean associated with Late Paleocene climatic cooling Hollis, C.J. Tayler, M.J.S. Andrew, B. Taylor, K.W. Lurcock, P. Bijl, P.K. Kulhanek, D.K. Crouch, E.M. Nelson, C.S. Pancost, R.D. Huber, M. Wilson, G.S. Ventura, G.T. Crampton, J.S. Schiøler, P. Phillips, A. NWO-VENI: The Dawn of Greenhouse Earth: climate and carbon cycle dynamics of the Palaeocene Marine palynology and palaeoceanography Dep Biologie 2014 application/pdf https://dspace.library.uu.nl/handle/1874/309679 en eng 0012-8252 https://dspace.library.uu.nl/handle/1874/309679 info:eu-repo/semantics/EmbargoedAccess Paleogene Paleoclimate Regional cooling Sea level fall Organic facies Geochemistry Article 2014 ftunivutrecht 2023-07-02T01:16:29Z A distinctive organic-rich marine mudstone of Late Paleocene age occurs in most of New Zealand's sedimentary basins and has been identified as a potential source rock for oil and gas. Identified as the Waipawa Formation in the East Coast Basin and the Tartan Formation in the Great South and Canterbury Basins, the unit is a relatively uniform massive mudstone that varies greatly in thickness (2–70 m) and grades laterally into distinctive facies equivalents, notably greensand and a thin-bedded siliceous mudstone. All these facies are characterised by relatively high TOC (0.5–10 wt.%) and 13C enrichment (δ13CTOC N −24‰), and we refer to them collectively as “Waipawa organofacies”. Our detailed stratigraphic and geochemical studies refine the age (58.7 to 59.4 Ma), distribution and nature of the Waipawa organofacies. We have determined that deposition occurred in continental margin settings throughout much of the southwest Pacific under cool, dysoxic conditions associated with a significant influx of terrestrial organic matter, high marine productivity, a global fall in sea level, and a regional unconformity across shallow and deep marine settings. The combination of cool temperatures, lowered sea level and bathyal erosion suggests that deposition was linked to short-lived growth of an Antarctic ice sheet in the earliest Late Paleocene (~59 Ma). Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Utrecht University Repository Antarctic Pacific |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Paleogene Paleoclimate Regional cooling Sea level fall Organic facies Geochemistry |
spellingShingle |
Paleogene Paleoclimate Regional cooling Sea level fall Organic facies Geochemistry Hollis, C.J. Tayler, M.J.S. Andrew, B. Taylor, K.W. Lurcock, P. Bijl, P.K. Kulhanek, D.K. Crouch, E.M. Nelson, C.S. Pancost, R.D. Huber, M. Wilson, G.S. Ventura, G.T. Crampton, J.S. Schiøler, P. Phillips, A. Organic-rich sedimentation in the South Pacific Ocean associated with Late Paleocene climatic cooling |
topic_facet |
Paleogene Paleoclimate Regional cooling Sea level fall Organic facies Geochemistry |
description |
A distinctive organic-rich marine mudstone of Late Paleocene age occurs in most of New Zealand's sedimentary basins and has been identified as a potential source rock for oil and gas. Identified as the Waipawa Formation in the East Coast Basin and the Tartan Formation in the Great South and Canterbury Basins, the unit is a relatively uniform massive mudstone that varies greatly in thickness (2–70 m) and grades laterally into distinctive facies equivalents, notably greensand and a thin-bedded siliceous mudstone. All these facies are characterised by relatively high TOC (0.5–10 wt.%) and 13C enrichment (δ13CTOC N −24‰), and we refer to them collectively as “Waipawa organofacies”. Our detailed stratigraphic and geochemical studies refine the age (58.7 to 59.4 Ma), distribution and nature of the Waipawa organofacies. We have determined that deposition occurred in continental margin settings throughout much of the southwest Pacific under cool, dysoxic conditions associated with a significant influx of terrestrial organic matter, high marine productivity, a global fall in sea level, and a regional unconformity across shallow and deep marine settings. The combination of cool temperatures, lowered sea level and bathyal erosion suggests that deposition was linked to short-lived growth of an Antarctic ice sheet in the earliest Late Paleocene (~59 Ma). |
author2 |
NWO-VENI: The Dawn of Greenhouse Earth: climate and carbon cycle dynamics of the Palaeocene Marine palynology and palaeoceanography Dep Biologie |
format |
Article in Journal/Newspaper |
author |
Hollis, C.J. Tayler, M.J.S. Andrew, B. Taylor, K.W. Lurcock, P. Bijl, P.K. Kulhanek, D.K. Crouch, E.M. Nelson, C.S. Pancost, R.D. Huber, M. Wilson, G.S. Ventura, G.T. Crampton, J.S. Schiøler, P. Phillips, A. |
author_facet |
Hollis, C.J. Tayler, M.J.S. Andrew, B. Taylor, K.W. Lurcock, P. Bijl, P.K. Kulhanek, D.K. Crouch, E.M. Nelson, C.S. Pancost, R.D. Huber, M. Wilson, G.S. Ventura, G.T. Crampton, J.S. Schiøler, P. Phillips, A. |
author_sort |
Hollis, C.J. |
title |
Organic-rich sedimentation in the South Pacific Ocean associated with Late Paleocene climatic cooling |
title_short |
Organic-rich sedimentation in the South Pacific Ocean associated with Late Paleocene climatic cooling |
title_full |
Organic-rich sedimentation in the South Pacific Ocean associated with Late Paleocene climatic cooling |
title_fullStr |
Organic-rich sedimentation in the South Pacific Ocean associated with Late Paleocene climatic cooling |
title_full_unstemmed |
Organic-rich sedimentation in the South Pacific Ocean associated with Late Paleocene climatic cooling |
title_sort |
organic-rich sedimentation in the south pacific ocean associated with late paleocene climatic cooling |
publishDate |
2014 |
url |
https://dspace.library.uu.nl/handle/1874/309679 |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_relation |
0012-8252 https://dspace.library.uu.nl/handle/1874/309679 |
op_rights |
info:eu-repo/semantics/EmbargoedAccess |
_version_ |
1772176386562195456 |