Magmatic evolution of the Tuwu-Yandong porphyry Cu belt, NW China: Constraints from geochronology, geochemistry and Sr-Nd-Hf isotopes

详细信息    查看全文

• 作者：Bing Xiao^a ; ^b ; ¹ ; ^{xiaobing7960@126.com} ; Huayong Chen^a ; ^{huayongchen@gig.ac.cn} ; Pete Hollings^c ; ^{peter.hollings@lakeheadu.ca} ; Jinsheng Han^a ; ^{hanjinsheng@gig.ac.cn} ; Yunfeng Wang^a ; ^{yunjia512510@163.com} ; Juntao Yang^d ; ^{1179824864@qq.com} ; Keda Cai^e ; ^{caikd_117@hotmail.com}
• 关键词：Geochemistry ; Adakitic rocks ; Slab melting ; Tuwu&ndash ; Yandong ; Eastern Tianshan mountains
• 刊名：Gondwana Research
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：43
• 期：Complete
• 页码：74-91
• 全文大小：4458 K
• 卷排序：43

文摘

The ages of magmatism in Tuwu–Yandong district span for at least 40 m.y. Partial melting of the subducted oceanic crust generated adakitic melts. A flat subduction started ca. 340 Ma after a period of “steady” subduction, followed by slab rollback at ca. 323 Ma.