Large Carbonate Associated Sulfate isotopic variability between brachiopods, micrite, and other sedimentary components in Late Ordovician strata
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- 作者：Theodore M. Presenta ; ted@caltech.edu" class="auth_mail" title="E-mail the corresponding author ; Guillaume Parisa ; gparis@caltech.edu" class="auth_mail" title="E-mail the corresponding author ; Andrea Burkea ; 1 ; ab276@st-andrews.ac.uk" class="auth_mail" title="E-mail the corresponding author ; Woodward W. Fischerb ; wfischer@caltech.edu" class="auth_mail" title="E-mail the corresponding author ; Jess F. Adkinsa ; jess@gps.caltech.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：multi-collector inductively coupled plasma mass spectrometry ; MC-ICP-MS ; sulfur isotopes ; Hirnantian ; Silurian ; diagenesis
- 刊名：Earth and Planetary Science Letters
- 出版年：2015
- 出版时间：15 December 2015
- 年：2015
- 卷：432
- 期：Complete
- 页码：187-198
- 全文大小：2753 K
文摘
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Isolated small amounts of different components from Late Ordovician limestones.
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Measured texture-specific Carbonate Associated Sulfate (CAS) sulfur isotope ratio.
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A range of 25‰ in CAS between components can explain bulk-rock CAS variation.
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CAS from well-preserved brachiopod calcite preserves Ordovician seawater sulfate.
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Variability of micrite and cement components reflects diagenetic processes.