Cenomanian-Turonian benthic foraminifera of the Kerguelen Plateau
Recent drilling on the Kerguelen Plateau (Ocean Drilling Program Leg 183) has provided a unique and exciting high latitude record of palaeoceanographic change during the Cenomanian–Turonian in the Southern Ocean. The benthic foraminiferal succession at Site 1138 records the evolution of the Kerguele...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.751495 2024-09-15T18:25:04+00:00 Cenomanian-Turonian benthic foraminifera of the Kerguelen Plateau Holbourn, Ann E Kuhnt, Wolfgang LATITUDE: -53.551750 * LONGITUDE: 75.974880 * DATE/TIME START: 1999-01-07T23:30:00 * DATE/TIME END: 1999-01-31T06:15:00 2002 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.751495 https://doi.org/10.1594/PANGAEA.751495 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.751495 https://doi.org/10.1594/PANGAEA.751495 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Holbourn, Ann E; Kuhnt, Wolfgang (2002): Cenomanian–Turonian palaeoceanographic change on the Kerguelen Plateau: a comparison with Northern Hemisphere records. Cretaceous Research, 23(3), 333-349, https://doi.org/10.1006/cres.2002.1008 183-1138A DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg183 Ocean Drilling Program ODP dataset publication series 2002 ftpangaea https://doi.org/10.1594/PANGAEA.75149510.1006/cres.2002.1008 2024-07-24T02:31:20Z Recent drilling on the Kerguelen Plateau (Ocean Drilling Program Leg 183) has provided a unique and exciting high latitude record of palaeoceanographic change during the Cenomanian–Turonian in the Southern Ocean. The benthic foraminiferal succession at Site 1138 records the evolution of the Kerguelen Plateau from a subaerially exposed platform in the Cenomanian to a bathyal, pelagic environment in the early Turonian, following a major transgressive pulse and increased thermal subsidence of the Kerguelen Plateau, which led to a sea-level rise of possibly several hundred metres. Diversified benthic foraminiferal assemblages indicate an upper bathyal, mesotrophic setting after the peak of the transgression. The assemblages exhibit strong similarities to temperate, shelf and slope assemblages in the Northern Hemisphere. This bimodal distribution reflects the existence of open oceanic gateways and a dynamic trans-hemispheric global circulation. Equatorial assemblages are characterized by a low-diversity, high carbon flux biofacies. Assemblages from Alaska demonstrate high organic productivity and low oxygen conditions and the prevalence of elevated temperatures on the flooded shelf of the North Slope. Our results show that the distribution of upper bathyal benthic foraminifera was strongly modulated by carbon flux and oxygenation fluctuations, and not by physical migration barriers. Other/Unknown Material north slope Southern Ocean Alaska PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(75.974880,75.974880,-53.551750,-53.551750) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
183-1138A DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg183 Ocean Drilling Program ODP |
spellingShingle |
183-1138A DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg183 Ocean Drilling Program ODP Holbourn, Ann E Kuhnt, Wolfgang Cenomanian-Turonian benthic foraminifera of the Kerguelen Plateau |
topic_facet |
183-1138A DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg183 Ocean Drilling Program ODP |
description |
Recent drilling on the Kerguelen Plateau (Ocean Drilling Program Leg 183) has provided a unique and exciting high latitude record of palaeoceanographic change during the Cenomanian–Turonian in the Southern Ocean. The benthic foraminiferal succession at Site 1138 records the evolution of the Kerguelen Plateau from a subaerially exposed platform in the Cenomanian to a bathyal, pelagic environment in the early Turonian, following a major transgressive pulse and increased thermal subsidence of the Kerguelen Plateau, which led to a sea-level rise of possibly several hundred metres. Diversified benthic foraminiferal assemblages indicate an upper bathyal, mesotrophic setting after the peak of the transgression. The assemblages exhibit strong similarities to temperate, shelf and slope assemblages in the Northern Hemisphere. This bimodal distribution reflects the existence of open oceanic gateways and a dynamic trans-hemispheric global circulation. Equatorial assemblages are characterized by a low-diversity, high carbon flux biofacies. Assemblages from Alaska demonstrate high organic productivity and low oxygen conditions and the prevalence of elevated temperatures on the flooded shelf of the North Slope. Our results show that the distribution of upper bathyal benthic foraminifera was strongly modulated by carbon flux and oxygenation fluctuations, and not by physical migration barriers. |
format |
Other/Unknown Material |
author |
Holbourn, Ann E Kuhnt, Wolfgang |
author_facet |
Holbourn, Ann E Kuhnt, Wolfgang |
author_sort |
Holbourn, Ann E |
title |
Cenomanian-Turonian benthic foraminifera of the Kerguelen Plateau |
title_short |
Cenomanian-Turonian benthic foraminifera of the Kerguelen Plateau |
title_full |
Cenomanian-Turonian benthic foraminifera of the Kerguelen Plateau |
title_fullStr |
Cenomanian-Turonian benthic foraminifera of the Kerguelen Plateau |
title_full_unstemmed |
Cenomanian-Turonian benthic foraminifera of the Kerguelen Plateau |
title_sort |
cenomanian-turonian benthic foraminifera of the kerguelen plateau |
publisher |
PANGAEA |
publishDate |
2002 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.751495 https://doi.org/10.1594/PANGAEA.751495 |
op_coverage |
LATITUDE: -53.551750 * LONGITUDE: 75.974880 * DATE/TIME START: 1999-01-07T23:30:00 * DATE/TIME END: 1999-01-31T06:15:00 |
long_lat |
ENVELOPE(75.974880,75.974880,-53.551750,-53.551750) |
genre |
north slope Southern Ocean Alaska |
genre_facet |
north slope Southern Ocean Alaska |
op_source |
Supplement to: Holbourn, Ann E; Kuhnt, Wolfgang (2002): Cenomanian–Turonian palaeoceanographic change on the Kerguelen Plateau: a comparison with Northern Hemisphere records. Cretaceous Research, 23(3), 333-349, https://doi.org/10.1006/cres.2002.1008 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.751495 https://doi.org/10.1594/PANGAEA.751495 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.75149510.1006/cres.2002.1008 |
_version_ |
1810465477464424448 |