Please use this identifier to cite or link to this item: http://dlib.scu.ac.ir/handle/1956/4489
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DC FieldValueLanguage
dc.creatorSælen, Gunnar-
dc.creatorKristensen, Dorthe Klitgaard-
dc.creatorWesterlund, Stig-
dc.creatorJansen, Eystein-
dc.date2011-02-09T14:14:49Z-
dc.date2011-02-09T14:14:49Z-
dc.date2009-
dc.date.accessioned2019-07-20T06:45:59Z-
dc.date.available2019-07-20T06:45:59Z-
dc.identifierThe Open Geology Journal 3: 90-97-
dc.identifierhttp://hdl.handle.net/1956/4489-
dc.identifier10.2174/1874262900903010090-
dc.identifier.urihttps://bora.uib.no/handle/1956/4489-
dc.descriptionWell-preserved low-Mg calcite tests of modern benthic foraminifera from a depth transect off SW Norway show decreasing Sr/Ca with increasing water depth (r = –0.84). The Mg/Ca ratios also decrease with increasing water depth, although in a curvilinear fashion. Moreover, the inter- and intra-species scatter is apparently larger than for Sr/Ca. A majority of the analysed specimens have Mn/Ca < 200 μmol/mol, and show Sr/Ca, Mg/Ca that fall within published ranges for benthic foraminiferal calcite, indicating that pristine biogenic calcite has been analysed. The uniform temperature and salinity of bottom waters below ~800 m moreover indicate that neither temperature nor salinity can explain the observed Me/Ca trends. The Sr/Ca and Mg/Ca depth trends cannot be explained by dissolution since bottom waters are generally supersaturated with respect to calcite, and dissolution is only observed in a few specimens. Moreover, a regular increase in sedimentary organic content with depth needed to invoke a decrease in porewater pH and concomittant calcite dissolution is not observed. We tentatively ascribe the decreasing Sr/Ca and Mg/Ca trends to depthrelated physiological phenomena. The relatively small intra- and interspecies scatter at a given water depth, as well as the linear decrease in Sr/Ca ratios with increasing water depth observed in modern oceans, may render the Sr/Ca in calcitic benthic foraminifera a potential water-depth proxy for fossil deposits.-
dc.descriptionJournal Article-
dc.descriptionpublishedVersion-
dc.languageeng-
dc.publisherBentham Open-
dc.rightsAttribution-NonCommercial CC BY-NC-
dc.rightshttp://creativecommons.org/licenses/by-nc/3.0/-
dc.rightsCopyright Sælen et al.; Licensee Bentham Open.-
dc.rightsSælen et al.-
dc.subjectBenthic foraminifera-
dc.subjectSr/Ca-
dc.subjectPaleowater-depth proxy-
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450-
dc.titleSr/Ca in Calcitic Tests of Benthic Foraminifera - A Potential Water-Depth Proxy?-
dc.typePeer reviewed-
Appears in Collections:Department of Earth Science

Files in This Item:
Click on the URI links for accessing contents.
Full metadata record
DC FieldValueLanguage
dc.creatorSælen, Gunnar-
dc.creatorKristensen, Dorthe Klitgaard-
dc.creatorWesterlund, Stig-
dc.creatorJansen, Eystein-
dc.date2011-02-09T14:14:49Z-
dc.date2011-02-09T14:14:49Z-
dc.date2009-
dc.date.accessioned2019-07-20T06:45:59Z-
dc.date.available2019-07-20T06:45:59Z-
dc.identifierThe Open Geology Journal 3: 90-97-
dc.identifierhttp://hdl.handle.net/1956/4489-
dc.identifier10.2174/1874262900903010090-
dc.identifier.urihttps://bora.uib.no/handle/1956/4489-
dc.descriptionWell-preserved low-Mg calcite tests of modern benthic foraminifera from a depth transect off SW Norway show decreasing Sr/Ca with increasing water depth (r = –0.84). The Mg/Ca ratios also decrease with increasing water depth, although in a curvilinear fashion. Moreover, the inter- and intra-species scatter is apparently larger than for Sr/Ca. A majority of the analysed specimens have Mn/Ca < 200 μmol/mol, and show Sr/Ca, Mg/Ca that fall within published ranges for benthic foraminiferal calcite, indicating that pristine biogenic calcite has been analysed. The uniform temperature and salinity of bottom waters below ~800 m moreover indicate that neither temperature nor salinity can explain the observed Me/Ca trends. The Sr/Ca and Mg/Ca depth trends cannot be explained by dissolution since bottom waters are generally supersaturated with respect to calcite, and dissolution is only observed in a few specimens. Moreover, a regular increase in sedimentary organic content with depth needed to invoke a decrease in porewater pH and concomittant calcite dissolution is not observed. We tentatively ascribe the decreasing Sr/Ca and Mg/Ca trends to depthrelated physiological phenomena. The relatively small intra- and interspecies scatter at a given water depth, as well as the linear decrease in Sr/Ca ratios with increasing water depth observed in modern oceans, may render the Sr/Ca in calcitic benthic foraminifera a potential water-depth proxy for fossil deposits.-
dc.descriptionJournal Article-
dc.descriptionpublishedVersion-
dc.languageeng-
dc.publisherBentham Open-
dc.rightsAttribution-NonCommercial CC BY-NC-
dc.rightshttp://creativecommons.org/licenses/by-nc/3.0/-
dc.rightsCopyright Sælen et al.; Licensee Bentham Open.-
dc.rightsSælen et al.-
dc.subjectBenthic foraminifera-
dc.subjectSr/Ca-
dc.subjectPaleowater-depth proxy-
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450-
dc.titleSr/Ca in Calcitic Tests of Benthic Foraminifera - A Potential Water-Depth Proxy?-
dc.typePeer reviewed-
Appears in Collections:Department of Earth Science

Files in This Item:
Click on the URI links for accessing contents.
Full metadata record
DC FieldValueLanguage
dc.creatorSælen, Gunnar-
dc.creatorKristensen, Dorthe Klitgaard-
dc.creatorWesterlund, Stig-
dc.creatorJansen, Eystein-
dc.date2011-02-09T14:14:49Z-
dc.date2011-02-09T14:14:49Z-
dc.date2009-
dc.date.accessioned2019-07-20T06:45:59Z-
dc.date.available2019-07-20T06:45:59Z-
dc.identifierThe Open Geology Journal 3: 90-97-
dc.identifierhttp://hdl.handle.net/1956/4489-
dc.identifier10.2174/1874262900903010090-
dc.identifier.urihttps://bora.uib.no/handle/1956/4489-
dc.descriptionWell-preserved low-Mg calcite tests of modern benthic foraminifera from a depth transect off SW Norway show decreasing Sr/Ca with increasing water depth (r = –0.84). The Mg/Ca ratios also decrease with increasing water depth, although in a curvilinear fashion. Moreover, the inter- and intra-species scatter is apparently larger than for Sr/Ca. A majority of the analysed specimens have Mn/Ca < 200 μmol/mol, and show Sr/Ca, Mg/Ca that fall within published ranges for benthic foraminiferal calcite, indicating that pristine biogenic calcite has been analysed. The uniform temperature and salinity of bottom waters below ~800 m moreover indicate that neither temperature nor salinity can explain the observed Me/Ca trends. The Sr/Ca and Mg/Ca depth trends cannot be explained by dissolution since bottom waters are generally supersaturated with respect to calcite, and dissolution is only observed in a few specimens. Moreover, a regular increase in sedimentary organic content with depth needed to invoke a decrease in porewater pH and concomittant calcite dissolution is not observed. We tentatively ascribe the decreasing Sr/Ca and Mg/Ca trends to depthrelated physiological phenomena. The relatively small intra- and interspecies scatter at a given water depth, as well as the linear decrease in Sr/Ca ratios with increasing water depth observed in modern oceans, may render the Sr/Ca in calcitic benthic foraminifera a potential water-depth proxy for fossil deposits.-
dc.descriptionJournal Article-
dc.descriptionpublishedVersion-
dc.languageeng-
dc.publisherBentham Open-
dc.rightsAttribution-NonCommercial CC BY-NC-
dc.rightshttp://creativecommons.org/licenses/by-nc/3.0/-
dc.rightsCopyright Sælen et al.; Licensee Bentham Open.-
dc.rightsSælen et al.-
dc.subjectBenthic foraminifera-
dc.subjectSr/Ca-
dc.subjectPaleowater-depth proxy-
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450-
dc.titleSr/Ca in Calcitic Tests of Benthic Foraminifera - A Potential Water-Depth Proxy?-
dc.typePeer reviewed-
Appears in Collections:Department of Earth Science

Files in This Item:
Click on the URI links for accessing contents.