Stable carbon and oxygen isotope ratios of benthic and planktic foraminifera from the Atlantic Ocean
Benthonic foraminifera in late Pleistocene deep-sea cores show significant variation in delta 13C with depth in sediment. This, and the report by Sommer et al., (in prep) of delta 13C variations in planktonic foraminifera, indicate that the delta13C in dissolved oceanic CO2 undergoes a significant c...
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1977
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.692091 2023-05-15T18:01:00+02:00 Stable carbon and oxygen isotope ratios of benthic and planktic foraminifera from the Atlantic Ocean Shackleton, Nicholas J MEDIAN LATITUDE: -0.447111 * MEDIAN LONGITUDE: -35.742667 * SOUTH-BOUND LATITUDE: -16.443000 * WEST-BOUND LONGITUDE: -77.563000 * NORTH-BOUND LATITUDE: 25.171667 * EAST-BOUND LONGITUDE: -12.820000 * DATE/TIME START: 1966-05-13T00:00:00 * DATE/TIME END: 1972-01-10T00:00:00 1977-05-06 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.692091 https://doi.org/10.1594/PANGAEA.692091 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.692091 https://doi.org/10.1594/PANGAEA.692091 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Shackleton, Nicholas J (1977): Carbon-13 in Uvigerina: Tropical rain forest history and the equatorial Pacific carbonate dissolution cycle. In: Andersen, N R & Malahoff, A (eds.), The Fate of Fossil Fuel in the Oceans. New York (Plenum), 401-427 East Atlantic GIK12392-1 KAL Kasten corer M12392-1 M25 Meteor (1964) PC Piston corer V22 V22-174 Vema Y71-06 Y71-06-12 Yaquina Dataset 1977 ftpangaea https://doi.org/10.1594/PANGAEA.692091 2023-01-20T07:31:11Z Benthonic foraminifera in late Pleistocene deep-sea cores show significant variation in delta 13C with depth in sediment. This, and the report by Sommer et al., (in prep) of delta 13C variations in planktonic foraminifera, indicate that the delta13C in dissolved oceanic CO2 undergoes a significant change in a few thousand years. This is in apparent contradiction to the estimated 300 ka residence time for carbon in the ocean. It is suggested that this is a consequence of changes in the terrestrial plant biomass, which has a delta13C of about -25‰. Postulated changes in world vegetation, particularly in tropical rainforests during the Late Pleistocene, were sufficient to produce change of the magnitude observed. Rapid expansions of forests between 13 ka and 8 ka ago may have resulted in the striking accumulation of aragonite pteropods in Atlantic Ocean sediments of the age. Rapid deforestation during an interglacial-glacial transition probably caused the intense carbonate dissolution which is observed in Equatorial Pacific Ocean sediments deposited over this interbal. The current rate of injection of fossil fuel CO2 into the atmosphere is substantially greater than the rate at which it was added during post-interglacial aridification in the tropics. Dataset Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science Pacific ENVELOPE(-77.563000,-12.820000,25.171667,-16.443000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
East Atlantic GIK12392-1 KAL Kasten corer M12392-1 M25 Meteor (1964) PC Piston corer V22 V22-174 Vema Y71-06 Y71-06-12 Yaquina |
spellingShingle |
East Atlantic GIK12392-1 KAL Kasten corer M12392-1 M25 Meteor (1964) PC Piston corer V22 V22-174 Vema Y71-06 Y71-06-12 Yaquina Shackleton, Nicholas J Stable carbon and oxygen isotope ratios of benthic and planktic foraminifera from the Atlantic Ocean |
topic_facet |
East Atlantic GIK12392-1 KAL Kasten corer M12392-1 M25 Meteor (1964) PC Piston corer V22 V22-174 Vema Y71-06 Y71-06-12 Yaquina |
description |
Benthonic foraminifera in late Pleistocene deep-sea cores show significant variation in delta 13C with depth in sediment. This, and the report by Sommer et al., (in prep) of delta 13C variations in planktonic foraminifera, indicate that the delta13C in dissolved oceanic CO2 undergoes a significant change in a few thousand years. This is in apparent contradiction to the estimated 300 ka residence time for carbon in the ocean. It is suggested that this is a consequence of changes in the terrestrial plant biomass, which has a delta13C of about -25‰. Postulated changes in world vegetation, particularly in tropical rainforests during the Late Pleistocene, were sufficient to produce change of the magnitude observed. Rapid expansions of forests between 13 ka and 8 ka ago may have resulted in the striking accumulation of aragonite pteropods in Atlantic Ocean sediments of the age. Rapid deforestation during an interglacial-glacial transition probably caused the intense carbonate dissolution which is observed in Equatorial Pacific Ocean sediments deposited over this interbal. The current rate of injection of fossil fuel CO2 into the atmosphere is substantially greater than the rate at which it was added during post-interglacial aridification in the tropics. |
format |
Dataset |
author |
Shackleton, Nicholas J |
author_facet |
Shackleton, Nicholas J |
author_sort |
Shackleton, Nicholas J |
title |
Stable carbon and oxygen isotope ratios of benthic and planktic foraminifera from the Atlantic Ocean |
title_short |
Stable carbon and oxygen isotope ratios of benthic and planktic foraminifera from the Atlantic Ocean |
title_full |
Stable carbon and oxygen isotope ratios of benthic and planktic foraminifera from the Atlantic Ocean |
title_fullStr |
Stable carbon and oxygen isotope ratios of benthic and planktic foraminifera from the Atlantic Ocean |
title_full_unstemmed |
Stable carbon and oxygen isotope ratios of benthic and planktic foraminifera from the Atlantic Ocean |
title_sort |
stable carbon and oxygen isotope ratios of benthic and planktic foraminifera from the atlantic ocean |
publisher |
PANGAEA |
publishDate |
1977 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.692091 https://doi.org/10.1594/PANGAEA.692091 |
op_coverage |
MEDIAN LATITUDE: -0.447111 * MEDIAN LONGITUDE: -35.742667 * SOUTH-BOUND LATITUDE: -16.443000 * WEST-BOUND LONGITUDE: -77.563000 * NORTH-BOUND LATITUDE: 25.171667 * EAST-BOUND LONGITUDE: -12.820000 * DATE/TIME START: 1966-05-13T00:00:00 * DATE/TIME END: 1972-01-10T00:00:00 |
long_lat |
ENVELOPE(-77.563000,-12.820000,25.171667,-16.443000) |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Supplement to: Shackleton, Nicholas J (1977): Carbon-13 in Uvigerina: Tropical rain forest history and the equatorial Pacific carbonate dissolution cycle. In: Andersen, N R & Malahoff, A (eds.), The Fate of Fossil Fuel in the Oceans. New York (Plenum), 401-427 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.692091 https://doi.org/10.1594/PANGAEA.692091 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.692091 |
_version_ |
1766170309671518208 |