Early Cenozoic Atlantic and Pacific benthic foraminiferal isotopes from 12 sites
Oxygen and carbon isotope records are important tools used to reconstruct past ocean and climate conditions, with those of benthic foraminifera providing information on the deep oceans. Reconstructions are complicated by interspecies isotopic offsets that result from microhabitat preferences (carbon...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.738565 2024-09-15T18:23:14+00:00 Early Cenozoic Atlantic and Pacific benthic foraminiferal isotopes from 12 sites Katz, Miriam E Katz, David R Wright, James D Miller, Kenneth G Pak, Dorothy K Shackleton, Nicholas J Thomas, Ellen MEDIAN LATITUDE: 6.423365 * MEDIAN LONGITUDE: -80.295011 * SOUTH-BOUND LATITUDE: -51.542000 * WEST-BOUND LONGITUDE: 167.768567 * NORTH-BOUND LATITUDE: 51.450517 * EAST-BOUND LONGITUDE: -26.368700 * DATE/TIME START: 1987-03-16T00:00:00 * DATE/TIME END: 1997-02-06T04:30:00 2003 application/zip, 12 datasets https://doi.pangaea.de/10.1594/PANGAEA.738565 https://doi.org/10.1594/PANGAEA.738565 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.738565 https://doi.org/10.1594/PANGAEA.738565 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Katz, Miriam E; Katz, David R; Wright, James D; Miller, Kenneth G; Pak, Dorothy K; Shackleton, Nicholas J; Thomas, Ellen (2003): Early Cenozoic benthic foraminiferal isotopes: Species reliability and interspecies correction factors. Paleoceanography, 18(2), 1024, https://doi.org/10.1029/2002PA000798 114-698 114-699 114-700 114-702 145-883 145-884 171-1051A 171-1051B 171-1052A 171-1052B 171-1052C 171-1052F Blake Nose North Atlantic Ocean COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg114 Leg145 Leg171B North Pacific Ocean Ocean Drilling Program ODP South Atlantic Ocean dataset publication series 2003 ftpangaea https://doi.org/10.1594/PANGAEA.73856510.1029/2002PA000798 2024-07-24T02:31:20Z Oxygen and carbon isotope records are important tools used to reconstruct past ocean and climate conditions, with those of benthic foraminifera providing information on the deep oceans. Reconstructions are complicated by interspecies isotopic offsets that result from microhabitat preferences (carbonate precipitation in isotopically distinct environments) and vital effects (species-specific metabolic variation in isotopic fractionation). We provide correction factors for early Cenozoic benthic foraminifera commonly used for isotopic measurements (Cibicidoides spp., Nuttallides truempyi, Oridorsalis spp., Stensioina beccariiformis, Hanzawaia ammophila, and Bulimina spp.), showing that most yield reliable isotopic proxies of environmental change. The statistical methods and larger data sets used in this study provide more robust correction factors than do previous studies. Interspecies isotopic offsets appear to have changed through the Cenozoic, either (1) as a result of evolutionary changes or (2) as an artifact of different statistical methods and data set sizes used to determine the offsets in different studies. Regardless of the reason, the assumption that isotopic offsets have remained constant through the Cenozoic has introduced an 1-2°C uncertainty into deep sea paleotemperature calculations. In addition, we compare multiple species isotopic data from a western North Atlantic section that includes the Paleocene-Eocene thermal maximum to determine the most reliable isotopic indicator for this event. We propose that Oridorsalis spp. was the most reliable deepwater isotopic recorder at this location because it was best able to withstand the harsh water conditions that existed at this time; it may be the best recorder at other locations and for other extreme events also. Other/Unknown Material North Atlantic South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(167.768567,-26.368700,51.450517,-51.542000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
114-698 114-699 114-700 114-702 145-883 145-884 171-1051A 171-1051B 171-1052A 171-1052B 171-1052C 171-1052F Blake Nose North Atlantic Ocean COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg114 Leg145 Leg171B North Pacific Ocean Ocean Drilling Program ODP South Atlantic Ocean |
spellingShingle |
114-698 114-699 114-700 114-702 145-883 145-884 171-1051A 171-1051B 171-1052A 171-1052B 171-1052C 171-1052F Blake Nose North Atlantic Ocean COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg114 Leg145 Leg171B North Pacific Ocean Ocean Drilling Program ODP South Atlantic Ocean Katz, Miriam E Katz, David R Wright, James D Miller, Kenneth G Pak, Dorothy K Shackleton, Nicholas J Thomas, Ellen Early Cenozoic Atlantic and Pacific benthic foraminiferal isotopes from 12 sites |
topic_facet |
114-698 114-699 114-700 114-702 145-883 145-884 171-1051A 171-1051B 171-1052A 171-1052B 171-1052C 171-1052F Blake Nose North Atlantic Ocean COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg114 Leg145 Leg171B North Pacific Ocean Ocean Drilling Program ODP South Atlantic Ocean |
description |
Oxygen and carbon isotope records are important tools used to reconstruct past ocean and climate conditions, with those of benthic foraminifera providing information on the deep oceans. Reconstructions are complicated by interspecies isotopic offsets that result from microhabitat preferences (carbonate precipitation in isotopically distinct environments) and vital effects (species-specific metabolic variation in isotopic fractionation). We provide correction factors for early Cenozoic benthic foraminifera commonly used for isotopic measurements (Cibicidoides spp., Nuttallides truempyi, Oridorsalis spp., Stensioina beccariiformis, Hanzawaia ammophila, and Bulimina spp.), showing that most yield reliable isotopic proxies of environmental change. The statistical methods and larger data sets used in this study provide more robust correction factors than do previous studies. Interspecies isotopic offsets appear to have changed through the Cenozoic, either (1) as a result of evolutionary changes or (2) as an artifact of different statistical methods and data set sizes used to determine the offsets in different studies. Regardless of the reason, the assumption that isotopic offsets have remained constant through the Cenozoic has introduced an 1-2°C uncertainty into deep sea paleotemperature calculations. In addition, we compare multiple species isotopic data from a western North Atlantic section that includes the Paleocene-Eocene thermal maximum to determine the most reliable isotopic indicator for this event. We propose that Oridorsalis spp. was the most reliable deepwater isotopic recorder at this location because it was best able to withstand the harsh water conditions that existed at this time; it may be the best recorder at other locations and for other extreme events also. |
format |
Other/Unknown Material |
author |
Katz, Miriam E Katz, David R Wright, James D Miller, Kenneth G Pak, Dorothy K Shackleton, Nicholas J Thomas, Ellen |
author_facet |
Katz, Miriam E Katz, David R Wright, James D Miller, Kenneth G Pak, Dorothy K Shackleton, Nicholas J Thomas, Ellen |
author_sort |
Katz, Miriam E |
title |
Early Cenozoic Atlantic and Pacific benthic foraminiferal isotopes from 12 sites |
title_short |
Early Cenozoic Atlantic and Pacific benthic foraminiferal isotopes from 12 sites |
title_full |
Early Cenozoic Atlantic and Pacific benthic foraminiferal isotopes from 12 sites |
title_fullStr |
Early Cenozoic Atlantic and Pacific benthic foraminiferal isotopes from 12 sites |
title_full_unstemmed |
Early Cenozoic Atlantic and Pacific benthic foraminiferal isotopes from 12 sites |
title_sort |
early cenozoic atlantic and pacific benthic foraminiferal isotopes from 12 sites |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.738565 https://doi.org/10.1594/PANGAEA.738565 |
op_coverage |
MEDIAN LATITUDE: 6.423365 * MEDIAN LONGITUDE: -80.295011 * SOUTH-BOUND LATITUDE: -51.542000 * WEST-BOUND LONGITUDE: 167.768567 * NORTH-BOUND LATITUDE: 51.450517 * EAST-BOUND LONGITUDE: -26.368700 * DATE/TIME START: 1987-03-16T00:00:00 * DATE/TIME END: 1997-02-06T04:30:00 |
long_lat |
ENVELOPE(167.768567,-26.368700,51.450517,-51.542000) |
genre |
North Atlantic South Atlantic Ocean |
genre_facet |
North Atlantic South Atlantic Ocean |
op_source |
Supplement to: Katz, Miriam E; Katz, David R; Wright, James D; Miller, Kenneth G; Pak, Dorothy K; Shackleton, Nicholas J; Thomas, Ellen (2003): Early Cenozoic benthic foraminiferal isotopes: Species reliability and interspecies correction factors. Paleoceanography, 18(2), 1024, https://doi.org/10.1029/2002PA000798 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.738565 https://doi.org/10.1594/PANGAEA.738565 |
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.73856510.1029/2002PA000798 |
_version_ |
1810463412766900224 |