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1篇 您的检索式:作者名="AndersMeibom"
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1Zircon U-Pb SHRIMP dating of the Yematan batholith in Dulan, North Qaidam, NW China显示文摘The Yematan batholith crops out over 120 km2 in the North Qaidam ultrahigh pressure (UHP) metamorphic belt. It consists of granodiorite, monzogranite and biotite granite and forms an irregular intrusion into Neoproterozoic gneiss that has undergone Caledonian UHP metamorphism. Zircons from the Yematan granodiorite yield a SHRIMP U-Pb age of 397? Ma. These granitic rocks have geochemi- cal characteristics intermediate between I- and S-type gran- ites, and are post-collisional. We suggest that the Yematan granitic rocks were formed during the last exhumation event of the North Qaidam UHP belt.WUCailai YANGJingsui JosephL.Wooden SHIRendeng CHENSongyong AndersMeibom ChrisMattinson 2004Chinese Science Bulletin2004,49,16:14
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