Stratigraphic calibration of Oligocene-Miocene organic-walled dinoflagellate cysts from offshore Wilkes Land, East Antarctica, and a zonation proposal:
There is growing interest in the scientific community in reconstructing the paleoceanography of the Southern Ocean during the Oligocene-Miocene because these time intervals experienced atmospheric CO2 concentrations with relevance to our future. However, it has remained notoriously difficult to put...
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fttno:oai:tudelft.nl:uuid:ea8605c1-3687-47ee-b983-8bbb3d80e529 2023-05-15T13:35:22+02:00 Stratigraphic calibration of Oligocene-Miocene organic-walled dinoflagellate cysts from offshore Wilkes Land, East Antarctica, and a zonation proposal: Bijl, P.K. Houben, A.J.P. Bruls, A. Pross, J. Sangiorgi, F. 2018-01-01 http://resolver.tudelft.nl/uuid:ea8605c1-3687-47ee-b983-8bbb3d80e529 en eng uuid:ea8605c1-3687-47ee-b983-8bbb3d80e529 784894 http://resolver.tudelft.nl/uuid:ea8605c1-3687-47ee-b983-8bbb3d80e529 Journal of Micropalaeontology, 1, 37, 105-138 Geosciences Biostratigraphy Calibration Deposition Dinoflagellate cyst Marine isotope stage Ocean Drilling Program Oligocene East Antarctica Geological Survey Netherlands 2015 Energy 2015 Geo PG - Petroleum Geosciences ELSS - Earth Life and Social Sciences article 2018 fttno 2022-04-10T16:53:24Z There is growing interest in the scientific community in reconstructing the paleoceanography of the Southern Ocean during the Oligocene-Miocene because these time intervals experienced atmospheric CO2 concentrations with relevance to our future. However, it has remained notoriously difficult to put the sedimentary archives used in these efforts into a temporal framework. This is at least partially due to the fact that the bioevents recorded in organic-walled dinoflagellate cysts (dinocysts), which often represent the only microfossil group preserved, have not yet been calibrated to the international timescale. Here we present dinocyst ranges from Oligocene-Miocene sediments drilled offshore the Wilkes Land continental margin, East Antarctica (Integrated Ocean Drilling Program (IODP) Hole U1356A). In addition, we apply statistical means to test a priori assumptions about whether the recorded taxa were deposited in situ or were reworked from older strata. Moreover, we describe two new dinocyst species, Selenopemphix brinkhuisii sp. nov. and Lejeunecysta adeliensis sp. nov., which are identified as important markers for regional stratigraphic analysis. Finally, we calibrate all identified dinocyst events to the international timescale using independent age control from calcareous nanoplankton and magnetostratigraphy from IODP Hole U1356A, and we propose a provisional dinoflagellate cyst zonation scheme for the Oligocene-Miocene of the Southern Ocean. © Author(s) 2018. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Southern Ocean Wilkes Land TU Delft: Institutional Repository (Delft University of Technology) Southern Ocean East Antarctica Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) |
institution |
Open Polar |
collection |
TU Delft: Institutional Repository (Delft University of Technology) |
op_collection_id |
fttno |
language |
English |
topic |
Geosciences Biostratigraphy Calibration Deposition Dinoflagellate cyst Marine isotope stage Ocean Drilling Program Oligocene East Antarctica Geological Survey Netherlands 2015 Energy 2015 Geo PG - Petroleum Geosciences ELSS - Earth Life and Social Sciences |
spellingShingle |
Geosciences Biostratigraphy Calibration Deposition Dinoflagellate cyst Marine isotope stage Ocean Drilling Program Oligocene East Antarctica Geological Survey Netherlands 2015 Energy 2015 Geo PG - Petroleum Geosciences ELSS - Earth Life and Social Sciences Bijl, P.K. Houben, A.J.P. Bruls, A. Pross, J. Sangiorgi, F. Stratigraphic calibration of Oligocene-Miocene organic-walled dinoflagellate cysts from offshore Wilkes Land, East Antarctica, and a zonation proposal: |
topic_facet |
Geosciences Biostratigraphy Calibration Deposition Dinoflagellate cyst Marine isotope stage Ocean Drilling Program Oligocene East Antarctica Geological Survey Netherlands 2015 Energy 2015 Geo PG - Petroleum Geosciences ELSS - Earth Life and Social Sciences |
description |
There is growing interest in the scientific community in reconstructing the paleoceanography of the Southern Ocean during the Oligocene-Miocene because these time intervals experienced atmospheric CO2 concentrations with relevance to our future. However, it has remained notoriously difficult to put the sedimentary archives used in these efforts into a temporal framework. This is at least partially due to the fact that the bioevents recorded in organic-walled dinoflagellate cysts (dinocysts), which often represent the only microfossil group preserved, have not yet been calibrated to the international timescale. Here we present dinocyst ranges from Oligocene-Miocene sediments drilled offshore the Wilkes Land continental margin, East Antarctica (Integrated Ocean Drilling Program (IODP) Hole U1356A). In addition, we apply statistical means to test a priori assumptions about whether the recorded taxa were deposited in situ or were reworked from older strata. Moreover, we describe two new dinocyst species, Selenopemphix brinkhuisii sp. nov. and Lejeunecysta adeliensis sp. nov., which are identified as important markers for regional stratigraphic analysis. Finally, we calibrate all identified dinocyst events to the international timescale using independent age control from calcareous nanoplankton and magnetostratigraphy from IODP Hole U1356A, and we propose a provisional dinoflagellate cyst zonation scheme for the Oligocene-Miocene of the Southern Ocean. © Author(s) 2018. |
format |
Article in Journal/Newspaper |
author |
Bijl, P.K. Houben, A.J.P. Bruls, A. Pross, J. Sangiorgi, F. |
author_facet |
Bijl, P.K. Houben, A.J.P. Bruls, A. Pross, J. Sangiorgi, F. |
author_sort |
Bijl, P.K. |
title |
Stratigraphic calibration of Oligocene-Miocene organic-walled dinoflagellate cysts from offshore Wilkes Land, East Antarctica, and a zonation proposal: |
title_short |
Stratigraphic calibration of Oligocene-Miocene organic-walled dinoflagellate cysts from offshore Wilkes Land, East Antarctica, and a zonation proposal: |
title_full |
Stratigraphic calibration of Oligocene-Miocene organic-walled dinoflagellate cysts from offshore Wilkes Land, East Antarctica, and a zonation proposal: |
title_fullStr |
Stratigraphic calibration of Oligocene-Miocene organic-walled dinoflagellate cysts from offshore Wilkes Land, East Antarctica, and a zonation proposal: |
title_full_unstemmed |
Stratigraphic calibration of Oligocene-Miocene organic-walled dinoflagellate cysts from offshore Wilkes Land, East Antarctica, and a zonation proposal: |
title_sort |
stratigraphic calibration of oligocene-miocene organic-walled dinoflagellate cysts from offshore wilkes land, east antarctica, and a zonation proposal: |
publishDate |
2018 |
url |
http://resolver.tudelft.nl/uuid:ea8605c1-3687-47ee-b983-8bbb3d80e529 |
long_lat |
ENVELOPE(120.000,120.000,-69.000,-69.000) |
geographic |
Southern Ocean East Antarctica Wilkes Land |
geographic_facet |
Southern Ocean East Antarctica Wilkes Land |
genre |
Antarc* Antarctica East Antarctica Southern Ocean Wilkes Land |
genre_facet |
Antarc* Antarctica East Antarctica Southern Ocean Wilkes Land |
op_source |
Journal of Micropalaeontology, 1, 37, 105-138 |
op_relation |
uuid:ea8605c1-3687-47ee-b983-8bbb3d80e529 784894 http://resolver.tudelft.nl/uuid:ea8605c1-3687-47ee-b983-8bbb3d80e529 |
_version_ |
1766064904773566464 |