Isoleucine epimerization in Quarternary planktic foraminifera of sediment core GIK12519-2, Sierra Leone Rise ...
Panktonic foraminiferal tests of the spinose species Orbulina universa, of the non-spinose Globorotalia tumida-menardii complex, and of a mixed species assemblage (grain size fraction 200-400 µm) were isolated from Sierra Leone Rise core GIK13519-2 and analyzed for free, total, and bound (by differe...
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ftdatacite:10.1594/pangaea.548489 2024-09-15T18:31:03+00:00 Isoleucine epimerization in Quarternary planktic foraminifera of sediment core GIK12519-2, Sierra Leone Rise ... Müller, Peter J 1984 application/zip https://dx.doi.org/10.1594/pangaea.548489 https://doi.pangaea.de/10.1594/PANGAEA.548489 en eng PANGAEA Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Gravity corer Kiel type M51 Meteor 1964 Institute for Geosciences, Christian Albrechts University, Kiel GIK/IfG article Collection Supplementary Publication Series of Datasets 1984 ftdatacite https://doi.org/10.1594/pangaea.548489 2024-08-01T11:00:37Z Panktonic foraminiferal tests of the spinose species Orbulina universa, of the non-spinose Globorotalia tumida-menardii complex, and of a mixed species assemblage (grain size fraction 200-400 µm) were isolated from Sierra Leone Rise core GIK13519-2 and analyzed for free, total, and bound (by difference) amino acids to study the isoleucine epimerization mechanism in fossil foraminiferal tests and to define empirical calibration curves for dating deep-sea sediments over the past 900,000 years.Total isoleucine epimerization curves typically separate into three "linear" segments of decreasing apparents rates with increasing time and exhibit a pronounced „species effect“. The degree of epimerization attained at time is considerably lower in O. universa than in G. tumida-menardii while the mixed species results scatter between the limits delineated by the two monospecific curves. Total allo/iso ratios are closely related to the proportion of free to total isoleucine accumulating in the tests indicating that the ... : Supplement to: Müller, Peter J (1984): Isoleucine epimerization in Quaternary planktonic foraminifera: Effects of diagenetic hydrolysis and leaching, and Atlantic-Pacific intercore correlations. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe C Geologie und Geophysik, Gebrüder Bornträger, Berlin, Stuttgart, C38, 25-48 ... Article in Journal/Newspaper Planktonic foraminifera DataCite |
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ftdatacite |
language |
English |
topic |
Gravity corer Kiel type M51 Meteor 1964 Institute for Geosciences, Christian Albrechts University, Kiel GIK/IfG |
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Gravity corer Kiel type M51 Meteor 1964 Institute for Geosciences, Christian Albrechts University, Kiel GIK/IfG Müller, Peter J Isoleucine epimerization in Quarternary planktic foraminifera of sediment core GIK12519-2, Sierra Leone Rise ... |
topic_facet |
Gravity corer Kiel type M51 Meteor 1964 Institute for Geosciences, Christian Albrechts University, Kiel GIK/IfG |
description |
Panktonic foraminiferal tests of the spinose species Orbulina universa, of the non-spinose Globorotalia tumida-menardii complex, and of a mixed species assemblage (grain size fraction 200-400 µm) were isolated from Sierra Leone Rise core GIK13519-2 and analyzed for free, total, and bound (by difference) amino acids to study the isoleucine epimerization mechanism in fossil foraminiferal tests and to define empirical calibration curves for dating deep-sea sediments over the past 900,000 years.Total isoleucine epimerization curves typically separate into three "linear" segments of decreasing apparents rates with increasing time and exhibit a pronounced „species effect“. The degree of epimerization attained at time is considerably lower in O. universa than in G. tumida-menardii while the mixed species results scatter between the limits delineated by the two monospecific curves. Total allo/iso ratios are closely related to the proportion of free to total isoleucine accumulating in the tests indicating that the ... : Supplement to: Müller, Peter J (1984): Isoleucine epimerization in Quaternary planktonic foraminifera: Effects of diagenetic hydrolysis and leaching, and Atlantic-Pacific intercore correlations. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe C Geologie und Geophysik, Gebrüder Bornträger, Berlin, Stuttgart, C38, 25-48 ... |
format |
Article in Journal/Newspaper |
author |
Müller, Peter J |
author_facet |
Müller, Peter J |
author_sort |
Müller, Peter J |
title |
Isoleucine epimerization in Quarternary planktic foraminifera of sediment core GIK12519-2, Sierra Leone Rise ... |
title_short |
Isoleucine epimerization in Quarternary planktic foraminifera of sediment core GIK12519-2, Sierra Leone Rise ... |
title_full |
Isoleucine epimerization in Quarternary planktic foraminifera of sediment core GIK12519-2, Sierra Leone Rise ... |
title_fullStr |
Isoleucine epimerization in Quarternary planktic foraminifera of sediment core GIK12519-2, Sierra Leone Rise ... |
title_full_unstemmed |
Isoleucine epimerization in Quarternary planktic foraminifera of sediment core GIK12519-2, Sierra Leone Rise ... |
title_sort |
isoleucine epimerization in quarternary planktic foraminifera of sediment core gik12519-2, sierra leone rise ... |
publisher |
PANGAEA |
publishDate |
1984 |
url |
https://dx.doi.org/10.1594/pangaea.548489 https://doi.pangaea.de/10.1594/PANGAEA.548489 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_doi |
https://doi.org/10.1594/pangaea.548489 |
_version_ |
1810472653001064448 |