No evidence of extraterrestrial noble metal and helium anomalies at Marinoan glacial termination
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- 作者：Bernhard Peucker-Ehrenbrinka ; behrenbrink@whoi.edu" class="auth_mail" title="E-mail the corresponding author ; Christine A. Watersa ; b ; c ; Mark D. Kurza ; Paul F. Hoffmand ; e
- 关键词：snowball earth ; osmium isotopes ; iridium ; helium isotopes ; extraterrestrial matter ; cap carbonate
- 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：76-88
- 全文大小：3117 K
文摘
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No extraterrestrial iridium anomalies at the end of Cryogenian glaciations.
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Platinum group element anomalies found in some sections are of terrestrial origin.
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Seawater has unradiogenic 187Os/188Os composition immediately after deglaciations.