Mg isotopes and Mg/Ca values of coccoliths from cultured specimens of the species Emiliania huxleyi and Gephyrocapsa oceanica SCIE SCOPUS

DC Field Value Language Ra, Kongtae - Kitagawa, Hiroyuki - Shiraiwa, Yoshihiro - 2020-04-20T08:25:19Z - 2020-04-20T08:25:19Z - 2020-01-28 - 2010-12 -
dc.identifier.issn 0377-8398 -
dc.identifier.uri -
dc.description.abstract Coccoliths from cultured specimens of two species of coccolithophores (Emiliania huxleyi and Gephyrocapsa oceanica) were sampled during two growth phases (late exponential and stationary), and their Mg isotope values (delta Mg-26) as well as Mg/Ca values were measured in order to investigate whether delta Mg-26 can be used as a temperature proxy. Mg/Ca values were positively related with temperature (similar to 0.002 mmol/mol/degrees C), without statistically significant differences between the two growth phases and the two species. Both species were depleted in heavier Mg isotopes relative to the culture medium, and delta Mg-26 values were temperature dependent in both growth phases of E. huxleyi, although the delta Mg-26 values differed in the two growth phases. In G. oceanica, a weak correlation between delta Mg-26 values and temperature was seen in the late exponential growth phase only, and the delta Mg-26 values differed between growth phases. The large differences between delta(26)mg values as measured in calcite formed during different growth phases indicate that Mg isotopes of coccoliths cannot be simply used as a temperature proxy. Our conclusions are preliminary and more data must be collected in order to fully evaluate the use of Mg isotopes of coccoliths as a temperature proxy. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved. -
dc.description.uri 1 -
dc.language English -
dc.publisher ELSEVIER SCIENCE BV -
dc.subject COLLECTOR ICP-MS -
dc.subject CALCIUM CYCLE -
dc.subject MAGNESIUM -
dc.subject FRACTIONATION -
dc.subject TEMPERATURE -
dc.subject RATIOS -
dc.subject ALKENONES -
dc.subject SEAWATER -
dc.title Mg isotopes and Mg/Ca values of coccoliths from cultured specimens of the species Emiliania huxleyi and Gephyrocapsa oceanica -
dc.type Article -
dc.citation.endPage 124 -
dc.citation.startPage 119 -
dc.citation.volume 77 -
dc.citation.number 3-4 -
dc.identifier.bibliographicCitation MARINE MICROPALEONTOLOGY, v.77, no.3-4, pp.119 - 124 -
dc.identifier.doi 10.1016/j.marmicro.2010.08.003 -
dc.identifier.scopusid 2-s2.0-78649320097 -
dc.identifier.wosid 000285233100003 -
dc.type.docType Article -
dc.description.journalClass 1 -
dc.subject.keywordPlus COLLECTOR ICP-MS -
dc.subject.keywordPlus BIOGENIC CARBONATES -
dc.subject.keywordPlus FORAMINIFERAL MG/CA -
dc.subject.keywordPlus CALCIUM CYCLE -
dc.subject.keywordPlus MAGNESIUM -
dc.subject.keywordPlus FRACTIONATION -
dc.subject.keywordPlus TEMPERATURE -
dc.subject.keywordPlus RATIOS -
dc.subject.keywordPlus ALKENONES -
dc.subject.keywordPlus SEAWATER -
dc.subject.keywordAuthor Mg isotopes -
dc.subject.keywordAuthor Mg/Ca -
dc.subject.keywordAuthor Coccoliths -
dc.subject.keywordAuthor Coccolithophores -
dc.subject.keywordAuthor Temperature proxy -
dc.relation.journalWebOfScienceCategory Paleontology -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Paleontology -
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