First U-Pb SHRIMP age for the Pilmatué Member (Agrio Formation) of the Neuquén Basin, Argentina: Implications for the Hauterivian lower boundary
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- 作者：Ernesto Schwarza ; eschwarz@cig.museo.unlp.edu.ar" class="auth_mail" title="E-mail the corresponding author ; Luis A. Spallettia ; spalle@cig.museo.unlp.edu.ar" class="auth_mail" title="E-mail the corresponding author ; Gonzalo D. Veigaa ; veiga@cig.museo.unlp.edu.ar" class="auth_mail" title="E-mail the corresponding author ; C. Mark Fanningb ; mark.fanning@anu.edu.au" class="auth_mail" title="E-mail the corresponding author
- 关键词：Hauterivian lower boundary ; U&ndash ; Pb SHRIMP numerical age ; Austral Province ; Neuqué ; n Basin
- 刊名：Cretaceous Research
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：58
- 期：Complete
- 页码：223-233
- 全文大小：3579 K
文摘
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First geochronological dating (U-Pb SHRIMP) of a tuff layer in the Pilmatué Member of the Agrio Fm (Neuquén Basin, Argentina) is presented.
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The tuff occurs in an ammonite zone equivalent to the A. radiatus Zone, which in the West Mediterranean marks the entrance in the Hauterivian.
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The absolute age of 130.0 ± 0.8 Ma is the first numerical data that could help constraining the Hauterivian lower boundary and its duration.