Oxygen isotope perspective on crustal evolution on early Earth: A record of Precambrian shales with emphasis on Paleoproterozoic glaciations and Great Oxygenation Event
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- 作者：I.N. Bindemana ; Bindeman@uoregon.edu" class="auth_mail" title="E-mail the corresponding author ; A. Bekkerb ; c ; D.O. Zakharova
- 关键词：crustal maturation ; Wilson cycle ; stable isotopes ; weathering ; clastic sedimentary rocks ; early Earth
- 刊名：Earth and Planetary Science Letters
- 出版年：2016
- 出版时间：1 March 2016
- 年：2016
- 卷：437
- 期：Complete
- 页码：101-113
- 全文大小：2859 K
文摘
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Temporally increasing δ18O values of shales reflect progressive crustal maturation and sequestration of weathering products.
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This pattern is different from the coeval trends of carbonates and cherts.
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δ18O rises and falls are linked to the supercontinent cycle.
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Lowest δ18O and δD shales associated with Paleoproterozoic Snowball glaciations.
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There is no difference in δ18O values in shales deposited before and after the GOE.