Dating late Quaternary planktonic foraminifer Neogloboquadrina pachyderma from the Arctic Ocean by using amino acid racemization
Abstract. The long-term rate of racemization for amino acids preserved in planktonic foraminifera was determined by using independently dated sediment cores from the Arctic Ocean. The racemization rates for aspartic acid (Asp) and glutamic acid (Glu) in the common taxon, Neogloboquadrina pachyderma,...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.561.2200 2023-05-15T14:34:50+02:00 Dating late Quaternary planktonic foraminifer Neogloboquadrina pachyderma from the Arctic Ocean by using amino acid racemization The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.561.2200 http://bprc.osu.edu/geo/publications/kaufman_etal_paleoc08.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.561.2200 http://bprc.osu.edu/geo/publications/kaufman_etal_paleoc08.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://bprc.osu.edu/geo/publications/kaufman_etal_paleoc08.pdf amino acid racemization Quaternary geochronology Arctic Ocean planktonic text ftciteseerx 2016-01-08T12:03:10Z Abstract. The long-term rate of racemization for amino acids preserved in planktonic foraminifera was determined by using independently dated sediment cores from the Arctic Ocean. The racemization rates for aspartic acid (Asp) and glutamic acid (Glu) in the common taxon, Neogloboquadrina pachyderma, were calibrated for the last 150 ka using 14C ages and the emerging Quaternary chronostratigraphy of Arctic Ocean sediments. An analysis of errors indicates realistic age uncertainties of about ± 12 % for Asp and ± 17 % for Glu. Fifty individual tests are sufficient to analyze multiple subsamples, identify outliers, and derive robust sample mean values. The new age equation can be applied to verify and refine age models for sediment cores elsewhere in the Arctic Ocean, a critical region for understanding the dynamics of global climate change. Text Arctic Arctic Ocean Climate change Foraminifera* Neogloboquadrina pachyderma Planktonic foraminifera Unknown Arctic Arctic Ocean |
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Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
amino acid racemization Quaternary geochronology Arctic Ocean planktonic |
spellingShingle |
amino acid racemization Quaternary geochronology Arctic Ocean planktonic Dating late Quaternary planktonic foraminifer Neogloboquadrina pachyderma from the Arctic Ocean by using amino acid racemization |
topic_facet |
amino acid racemization Quaternary geochronology Arctic Ocean planktonic |
description |
Abstract. The long-term rate of racemization for amino acids preserved in planktonic foraminifera was determined by using independently dated sediment cores from the Arctic Ocean. The racemization rates for aspartic acid (Asp) and glutamic acid (Glu) in the common taxon, Neogloboquadrina pachyderma, were calibrated for the last 150 ka using 14C ages and the emerging Quaternary chronostratigraphy of Arctic Ocean sediments. An analysis of errors indicates realistic age uncertainties of about ± 12 % for Asp and ± 17 % for Glu. Fifty individual tests are sufficient to analyze multiple subsamples, identify outliers, and derive robust sample mean values. The new age equation can be applied to verify and refine age models for sediment cores elsewhere in the Arctic Ocean, a critical region for understanding the dynamics of global climate change. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
title |
Dating late Quaternary planktonic foraminifer Neogloboquadrina pachyderma from the Arctic Ocean by using amino acid racemization |
title_short |
Dating late Quaternary planktonic foraminifer Neogloboquadrina pachyderma from the Arctic Ocean by using amino acid racemization |
title_full |
Dating late Quaternary planktonic foraminifer Neogloboquadrina pachyderma from the Arctic Ocean by using amino acid racemization |
title_fullStr |
Dating late Quaternary planktonic foraminifer Neogloboquadrina pachyderma from the Arctic Ocean by using amino acid racemization |
title_full_unstemmed |
Dating late Quaternary planktonic foraminifer Neogloboquadrina pachyderma from the Arctic Ocean by using amino acid racemization |
title_sort |
dating late quaternary planktonic foraminifer neogloboquadrina pachyderma from the arctic ocean by using amino acid racemization |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.561.2200 http://bprc.osu.edu/geo/publications/kaufman_etal_paleoc08.pdf |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Climate change Foraminifera* Neogloboquadrina pachyderma Planktonic foraminifera |
genre_facet |
Arctic Arctic Ocean Climate change Foraminifera* Neogloboquadrina pachyderma Planktonic foraminifera |
op_source |
http://bprc.osu.edu/geo/publications/kaufman_etal_paleoc08.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.561.2200 http://bprc.osu.edu/geo/publications/kaufman_etal_paleoc08.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766307786917937152 |