40Ar/39Ar thermochronological constraints on the retrogression and exhumation of ultra-high pressure (UHP) metamorphic rocks from Xitieshan terrane, North Qaidam, China
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- 作者：Rongguo Hua ; b ; c ; hurongguo@163.com" class="auth_mail" title="E-mail the corresponding author ; hurongguo@glut.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Jan R. Wijbransc ; Fraukje M. Brouwerc ; Min Wangb ; Linghao Zhaob ; Huaning Qiub ; 1 ; qiuhn@gig.ac.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：North Qaidam Orogen ; 40Ar/39Ar dating ; Retrograde metamorphism ; Extraneous 40Ar ; Exhumation rates
- 刊名：Gondwana Research
- 出版年：2016
- 出版时间：August 2016
- 年：2016
- 卷：36
- 期：Complete
- 页码：157-175
- 全文大小：9206 K
文摘
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We present new 40Ar/39Ar data to assess the retrogression history of Xitieshan eclogite, N. Qaidam.
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Amphibolite-facies metamorphism time of eclogite constrained as ~ 425 Ma.
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A pressure–temperature–time path was constructed based on our new 40Ar/39Ar data.
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The Xitieshan UHP rocks experienced an initial medium-speed exhumation of ~ 4.0 km/Myr.