Diagenetic effects on strontium isotope (87Sr/86Sr) and elemental(Sr, Mn, and Fe) signatures of Late Ordovician carbonates
2023-06-16 09:17:26DongpingHuDandanLiLianZhouLilinSunandYilunXu
中國科學(xué)技術(shù)大學(xué)學(xué)報 2023年5期
Dongping Hu , Dandan Li, Lian Zhou, Lilin Sun, and Yilun Xu
1School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China;
2State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China
Graphical abstract
87Sr/ 86Sr of carbonates can still be diagenetically altered although the samples meet the stricter geochemical criteria of retention.
Public summary
■ The Monitor Range section records significantly higher87Sr/86Sr values than the coeval seawater.
■ The radiogenic87Sr/86Sr ratios can be fully attributed to diagenetic alteration.
■ A comprehensive approach that incorporates evaluation of87Sr/86Sr correlations with diagenetic indicators and numerical simulation is proposed to identify the primary seawater Sr isotope signal.
中國科學(xué)技術(shù)大學(xué)學(xué)報2023年5期
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