Lithium-isotope evidence for enhanced silicate weathering during OAE 1a (Early Aptian Selli event)
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- 作者：Maria Lechlera ; maria.lechler@googlemail.com" class="auth_mail" title="E-mail the corresponding author ; Philip A.E. Pogge von Strandmannb ; p.strandmann@ucl.ac.uk" class="auth_mail" title="E-mail the corresponding author ; Hugh C. Jenkynsc ; Hugh.Jenkyns@earth.ox.ac.uk" class="auth_mail" title="E-mail the corresponding author ; Giacomo Prossera ; giacomo.prosser@unibas.it" class="auth_mail" title="E-mail the corresponding author ; Mariano Parented ; maparent@unina.it" class="auth_mail" title="E-mail the corresponding author
- 关键词：OAE 1a ; Selli event ; Li isotopes ; silicate weathering
- 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：210-222
- 全文大小：1146 K
文摘
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Li isotopes show a negative shift prior OAE 1a and one after.
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Weathering rates are enhanced about 2.5 times starting at the onset of OAE 1a.
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Weathering of silicates helped to sequester huge amounts of CO2.
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Weathering mafic material has a strong influence to the Os- and Sr-isotope record.
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Hydrothermal fluxes have been overestimated in previous studies.