Nannofossil and stable isotope record across the Paleocene/Eocene Thermal Maximum in ODP Hole 183-1135A
The Paleocene/Eocene Thermal Maximum (PETM, ca. 55 Ma) is an abrupt, profound perturbation of climate and the carbon cycle associated with a massive injection of isotopically light carbon into the ocean–atmosphere system. As such, it provides an analogue for understanding the interplay between phyto...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.774119 2024-09-15T17:40:20+00:00 Nannofossil and stable isotope record across the Paleocene/Eocene Thermal Maximum in ODP Hole 183-1135A Jiang, Shijun Wise, Sherwood W LATITUDE: -59.699910 * LONGITUDE: 84.273530 * DATE/TIME START: 1998-12-23T11:45:00 * DATE/TIME END: 1998-12-26T21:45:00 2009 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.774119 https://doi.org/10.1594/PANGAEA.774119 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.774119 https://doi.org/10.1594/PANGAEA.774119 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Jiang, Shijun; Wise, Sherwood W (2009): Distinguishing the influence of diagenesis on the paleoecological reconstruction of nannoplankton across the Paleocene/Eocene Thermal Maximum: An example from the Kerguelen Plateau, southern Indian Ocean. Marine Micropaleontology, 72(1-2), 49-59, https://doi.org/10.1016/j.marmicro.2009.03.003 183-1135A DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg183 Ocean Drilling Program ODP dataset publication series 2009 ftpangaea https://doi.org/10.1594/PANGAEA.77411910.1016/j.marmicro.2009.03.003 2024-07-24T02:31:21Z The Paleocene/Eocene Thermal Maximum (PETM, ca. 55 Ma) is an abrupt, profound perturbation of climate and the carbon cycle associated with a massive injection of isotopically light carbon into the ocean–atmosphere system. As such, it provides an analogue for understanding the interplay between phytoplankton and climate under modern anthropogenic global-warming conditions. However, the accompanying enhanced dissolution poses uncertainty on the reconstruction of the affected ecology and productivity. We present a high-resolution record of bulk isotopes and nannofossil absolute abundance from Ocean Drilling Program (ODP) Site 1135 on the Kerguelen Plateau, Southern Indian Ocean to quantitatively constrain for the first time the influence of dissolution on paleoecological reconstruction. Our bulk-carbonate isotope record closely resembles that of the classic PETM site at ODP Site 690 on the opposite side of the Antarctic continent, and its correlation with those from ODP Sites 690, 1262 and 1263 records allows recognition of 14 precessional cycles upsection from the onset of the carbon isotopic excursion (CIE). This, together with a full range of common Discoasteraraneus and an abundance crossover between Fasciculithus and Zygrhablithusbijugatus, indicates the presence of the PETM at Site 1135, a poorly known record with calcareous fossils throughout the interval. The strong correlation between the absolute abundances of Chiasmolithus and coccolith assemblages reveals a dominant paleoecological signal in the poorly preserved fossil assemblages, while the influence of dissolution is only strong during the CIE. This suggests that r-selected taxa can preserve faithful ecological information even in the severely-altered assemblages studied here, and therefore provide a strong case for the application of nannofossils to paleoecological studies in better-preserved PETM sections. The inferred nannoplankton productivity drops abruptly at the CIE onset, but rapidly increases after the CIE peak, both of which may be driven by ... Other/Unknown Material Antarc* Antarctic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(84.273530,84.273530,-59.699910,-59.699910) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
183-1135A DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg183 Ocean Drilling Program ODP |
spellingShingle |
183-1135A DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg183 Ocean Drilling Program ODP Jiang, Shijun Wise, Sherwood W Nannofossil and stable isotope record across the Paleocene/Eocene Thermal Maximum in ODP Hole 183-1135A |
topic_facet |
183-1135A DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg183 Ocean Drilling Program ODP |
description |
The Paleocene/Eocene Thermal Maximum (PETM, ca. 55 Ma) is an abrupt, profound perturbation of climate and the carbon cycle associated with a massive injection of isotopically light carbon into the ocean–atmosphere system. As such, it provides an analogue for understanding the interplay between phytoplankton and climate under modern anthropogenic global-warming conditions. However, the accompanying enhanced dissolution poses uncertainty on the reconstruction of the affected ecology and productivity. We present a high-resolution record of bulk isotopes and nannofossil absolute abundance from Ocean Drilling Program (ODP) Site 1135 on the Kerguelen Plateau, Southern Indian Ocean to quantitatively constrain for the first time the influence of dissolution on paleoecological reconstruction. Our bulk-carbonate isotope record closely resembles that of the classic PETM site at ODP Site 690 on the opposite side of the Antarctic continent, and its correlation with those from ODP Sites 690, 1262 and 1263 records allows recognition of 14 precessional cycles upsection from the onset of the carbon isotopic excursion (CIE). This, together with a full range of common Discoasteraraneus and an abundance crossover between Fasciculithus and Zygrhablithusbijugatus, indicates the presence of the PETM at Site 1135, a poorly known record with calcareous fossils throughout the interval. The strong correlation between the absolute abundances of Chiasmolithus and coccolith assemblages reveals a dominant paleoecological signal in the poorly preserved fossil assemblages, while the influence of dissolution is only strong during the CIE. This suggests that r-selected taxa can preserve faithful ecological information even in the severely-altered assemblages studied here, and therefore provide a strong case for the application of nannofossils to paleoecological studies in better-preserved PETM sections. The inferred nannoplankton productivity drops abruptly at the CIE onset, but rapidly increases after the CIE peak, both of which may be driven by ... |
format |
Other/Unknown Material |
author |
Jiang, Shijun Wise, Sherwood W |
author_facet |
Jiang, Shijun Wise, Sherwood W |
author_sort |
Jiang, Shijun |
title |
Nannofossil and stable isotope record across the Paleocene/Eocene Thermal Maximum in ODP Hole 183-1135A |
title_short |
Nannofossil and stable isotope record across the Paleocene/Eocene Thermal Maximum in ODP Hole 183-1135A |
title_full |
Nannofossil and stable isotope record across the Paleocene/Eocene Thermal Maximum in ODP Hole 183-1135A |
title_fullStr |
Nannofossil and stable isotope record across the Paleocene/Eocene Thermal Maximum in ODP Hole 183-1135A |
title_full_unstemmed |
Nannofossil and stable isotope record across the Paleocene/Eocene Thermal Maximum in ODP Hole 183-1135A |
title_sort |
nannofossil and stable isotope record across the paleocene/eocene thermal maximum in odp hole 183-1135a |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.774119 https://doi.org/10.1594/PANGAEA.774119 |
op_coverage |
LATITUDE: -59.699910 * LONGITUDE: 84.273530 * DATE/TIME START: 1998-12-23T11:45:00 * DATE/TIME END: 1998-12-26T21:45:00 |
long_lat |
ENVELOPE(84.273530,84.273530,-59.699910,-59.699910) |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Supplement to: Jiang, Shijun; Wise, Sherwood W (2009): Distinguishing the influence of diagenesis on the paleoecological reconstruction of nannoplankton across the Paleocene/Eocene Thermal Maximum: An example from the Kerguelen Plateau, southern Indian Ocean. Marine Micropaleontology, 72(1-2), 49-59, https://doi.org/10.1016/j.marmicro.2009.03.003 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.774119 https://doi.org/10.1594/PANGAEA.774119 |
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.77411910.1016/j.marmicro.2009.03.003 |
_version_ |
1810486350864973824 |