Old and juvenile source of Paleozoic and Mesozoic basaltic magmas in the Acatlán and Ayú complexes, Southern Mexico: Nd isotopic constraints
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- 作者：J. Duncan Keppiea ; duncan@unam.mx" class="auth_mail" title="E-mail the corresponding author ; Jaroslav Dostalb ; J. Gregory Shellnuttc
- 关键词：Acatlá ; n and Ayú ; complexes ; Nd isotopes ; Neoproterozoic&ndash ; Mesozoic ; Tholeiites ; Mantle ; tectonics
- 刊名：Tectonophysics
- 出版年：2016
- 出版时间：20 June 2016
- 年：2016
- 卷：681
- 期：Complete
- 页码：376-384
- 全文大小：1335 K
文摘
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Three episodes of 600–190 Ma rift tholeiites: lower and upper Paleozoic and Mesozoic.
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1 Ga subcontinental lithospheric mantle source for Neoproterozoic–Ordovician.
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1 Ga + juvenile mantle source for 365–330 Ma and 210–190 Ma mafic rocks.
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Alternation of rifting and underthrusting related to variations in Beniof zone dip.