Calcium isotopes in caves as a proxy for aridity: Modern calibration and application to the 8.2 kyr event
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- 作者：R.A. Owena ; robert.owen@earth.ox.ac.uk" class="auth_mail" title="E-mail the corresponding author ; C.C. Daya ; C.-Y. Hub ; Y.-H. Liub ; M.D. Pointinga ; C.L. Blä ; ttlera ; 1 ; G.M. Hendersona
- 关键词：speleothem ; Ca isotopes ; trace elements ; palaeoclimate ; palaeohydrology
- 刊名：Earth and Planetary Science Letters
- 出版年：2016
- 出版时间：1 June 2016
- 年：2016
- 卷：443
- 期：Complete
- 页码：129-138
- 全文大小：770 K
文摘
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This paper is the first comprehensive study of Ca isotopes in a cave.
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Ca isotopes are shown to respond to prior calcite precipitation (PCP).
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At Heshang Cave, PCP removed 36% of dripwater Ca during 2005–2007.
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PCP increased to 60% Ca removal during the 8.2 kyr event.
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This PCP increase reflects rainfall decreasing by a third.