Relationship of pyroclastic volcanism and lake-water acidification to Jehol Biota mass mortality events (Early Cretaceous, northeastern China)
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- 作者：Lian Zhoua ; zhcug@163.com" class="auth_mail" title="E-mail the corresponding author ; Thomas J. Algeoa ; b ; c ; Thomas.Algeo@uc.edu" class="auth_mail" title="E-mail the corresponding author ; Lanping Fenga ; Rixiang Zhud ; Yongxin Pand ; Shan Gaoa ; Laishi Zhaoa ; Yuanbao Wua
- 关键词：Molybdenum isotopes ; Boron ; Vertebrates ; Fossil lagerstä ; tte ; Lacustrine facies ; Maar
- 刊名：Chemical Geology
- 出版年：2016
- 出版时间：15 June 2016
- 年：2016
- 卷：428
- 期：Complete
- 页码：59-76
- 全文大小：2830 K
文摘
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The world-famous Jehol Biota fossil lagerstätte accumulated in Ancient Lake Sihetun.
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Lake Sihetun was an Early Cretaceous volcanic caldera lake (maar) in NE China.
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Lake sediments record four cycles of pyroclastic eruption and lake chemistry change.
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Lakewater chemistry fluctuated from acidic to alkaline during each eruption cycle.
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Low molybdenum isotope values (δ98/95Mo = –2.50‰) document hydrothermal inputs.