SEAWATER CHEMISTRY AND THE ADVENT OF BIOCALCIFICATION
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dc.contributor.author | Brennan S.T. | |
dc.contributor.author | Lowenstein T.K. | |
dc.contributor.author | Horita J. | |
dc.date.accessioned | 2022-07-09T04:44:19Z | |
dc.date.available | 2022-07-09T04:44:19Z | |
dc.date.issued | 2004 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=28042736 | |
dc.identifier.citation | Geology, 2004, 32, 6, 473-476 | |
dc.identifier.issn | 0091-7613 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/38000 | |
dc.description.abstract | Major ion compositions of primary fluid inclusions from terminal Proterozoic (ca. 544 Ma) and Early Cambrian (ca. 515 Ma) marine halites indicate that seawater Ca{sup 2+} concentrations increased approximately threefold during the Early Cambrian. The timing of this shift in seawater chemistry broadly coincides with the 'Cambrian explosion,' a brief drop in marine {sup 87}Sr/{sup 86}Sr values, and an increase in tectonic activity, suggesting a link between the advent of biocalcification, hydrothermal mid-ocean-ridge brine production, and the composition of seawater. The Early Cambrian surge in oceanic [Ca{sup 2+}] was likely the first such increase following the rise of metazoans and may have spurred evolutionary changes in marine biota. | |
dc.subject | seawater | |
dc.subject | evaporites | |
dc.subject | fluid inclusions | |
dc.subject | biomineralization | |
dc.subject | Cambrian explosion | |
dc.title | SEAWATER CHEMISTRY AND THE ADVENT OF BIOCALCIFICATION | |
dc.type | Статья | |
dc.subject.age | Paleozoic::Cambrian | |
dc.subject.age | Палеозой::Кембрийская | ru |
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