Vanadium in foraminiferal calcite: Evaluation of a method to determine paleo-seawater vanadium concentrations. Geochimica et Cosmochimica Acta
Abstract-We assess the potential of using foraminiferal calcite as a paleoceanographic indicator of seawater V concentrations. Laboratory culture experiments show that living benthic and planktonic foraminifera incorporate V into their test in direct proportion to seawater concentrations. Distributi...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.539.6240 2023-05-15T18:00:56+02:00 Vanadium in foraminiferal calcite: Evaluation of a method to determine paleo-seawater vanadium concentrations. Geochimica et Cosmochimica Acta David W. Hastings Steven R. Emerson Jonathan Erez Bruce K. Nelson The Pennsylvania State University CiteSeerX Archives 1996 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.6240 http://www.eckerd.edu/academics/marinescience/files/hastings/Hastings_GCA_96.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.6240 http://www.eckerd.edu/academics/marinescience/files/hastings/Hastings_GCA_96.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.eckerd.edu/academics/marinescience/files/hastings/Hastings_GCA_96.pdf text 1996 ftciteseerx 2016-01-08T10:58:19Z Abstract-We assess the potential of using foraminiferal calcite as a paleoceanographic indicator of seawater V concentrations. Laboratory culture experiments show that living benthic and planktonic foraminifera incorporate V into their test in direct proportion to seawater concentrations. Distribution coefficients relative to the culture solution are D = 2.1 X 10m3 and 2.8 X 10m3 for G. calida and A. lobifera, respectively. We use a cleaning procedure that effectively removes most V-rich contaminant phases from foraminiferal calcite preserved in the fossil record including organic matter and Mn-Fe oxyhydroxides. MnC03 overgrowths cannot be eliminated. Since V is conservative in the ocean, forami-niferal calcite recently accreted and found in surface sediment samples should have the same V content if this tracer accurately reflects seawater concentrations. V/Ca values for the same species of foraminifera are constant for core-top samples collected above the foraminiferal lysocline in different ocean basins. The mean distribution coefficients relative to seawater are D = 5.8 (21.0) X 10m3, 10.3 (50.7) x 10m3 and 32 (22.5) X low3 for G. sacculifer, G. tumida, and C. wuellerstorji, respectively. These differences suggest that V incorporation is species dependent. Core-top analyses along two submarine rises in the Equatorial Atlantic and Pacific oceans indicate significant dissolution effects. With increasing depth of deposition, and thus more extensive partial dissolution of the test, V/Ca decreases by a factor of three Text Planktonic foraminifera Unknown Pacific |
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ftciteseerx |
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English |
description |
Abstract-We assess the potential of using foraminiferal calcite as a paleoceanographic indicator of seawater V concentrations. Laboratory culture experiments show that living benthic and planktonic foraminifera incorporate V into their test in direct proportion to seawater concentrations. Distribution coefficients relative to the culture solution are D = 2.1 X 10m3 and 2.8 X 10m3 for G. calida and A. lobifera, respectively. We use a cleaning procedure that effectively removes most V-rich contaminant phases from foraminiferal calcite preserved in the fossil record including organic matter and Mn-Fe oxyhydroxides. MnC03 overgrowths cannot be eliminated. Since V is conservative in the ocean, forami-niferal calcite recently accreted and found in surface sediment samples should have the same V content if this tracer accurately reflects seawater concentrations. V/Ca values for the same species of foraminifera are constant for core-top samples collected above the foraminiferal lysocline in different ocean basins. The mean distribution coefficients relative to seawater are D = 5.8 (21.0) X 10m3, 10.3 (50.7) x 10m3 and 32 (22.5) X low3 for G. sacculifer, G. tumida, and C. wuellerstorji, respectively. These differences suggest that V incorporation is species dependent. Core-top analyses along two submarine rises in the Equatorial Atlantic and Pacific oceans indicate significant dissolution effects. With increasing depth of deposition, and thus more extensive partial dissolution of the test, V/Ca decreases by a factor of three |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
David W. Hastings Steven R. Emerson Jonathan Erez Bruce K. Nelson |
spellingShingle |
David W. Hastings Steven R. Emerson Jonathan Erez Bruce K. Nelson Vanadium in foraminiferal calcite: Evaluation of a method to determine paleo-seawater vanadium concentrations. Geochimica et Cosmochimica Acta |
author_facet |
David W. Hastings Steven R. Emerson Jonathan Erez Bruce K. Nelson |
author_sort |
David W. Hastings |
title |
Vanadium in foraminiferal calcite: Evaluation of a method to determine paleo-seawater vanadium concentrations. Geochimica et Cosmochimica Acta |
title_short |
Vanadium in foraminiferal calcite: Evaluation of a method to determine paleo-seawater vanadium concentrations. Geochimica et Cosmochimica Acta |
title_full |
Vanadium in foraminiferal calcite: Evaluation of a method to determine paleo-seawater vanadium concentrations. Geochimica et Cosmochimica Acta |
title_fullStr |
Vanadium in foraminiferal calcite: Evaluation of a method to determine paleo-seawater vanadium concentrations. Geochimica et Cosmochimica Acta |
title_full_unstemmed |
Vanadium in foraminiferal calcite: Evaluation of a method to determine paleo-seawater vanadium concentrations. Geochimica et Cosmochimica Acta |
title_sort |
vanadium in foraminiferal calcite: evaluation of a method to determine paleo-seawater vanadium concentrations. geochimica et cosmochimica acta |
publishDate |
1996 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.6240 http://www.eckerd.edu/academics/marinescience/files/hastings/Hastings_GCA_96.pdf |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
http://www.eckerd.edu/academics/marinescience/files/hastings/Hastings_GCA_96.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.6240 http://www.eckerd.edu/academics/marinescience/files/hastings/Hastings_GCA_96.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766170213728911360 |