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Discovery of Caledonian island-arc granodiorite-tonalite in Buqingshan, Qinghai Province

边千韬  罗小全  李涤徽  赵大升  陈海泓  徐贵忠  常承法  高延林  
【摘要】:正 The granodiorite-tonalite rock occurred in ophiolitic melange was discovered in Buqingshan area, Qinghai Province. Its Rb-Sr isochron age is 578.15±54.4 Ma which belongs to Early Paleozoic. The rock, belonging to calcic-alkaline series, has the features of island-arc granite, which hints-that ocea

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