浙江龙泉上侏罗统火山岩地球化学成份及其成因探讨
THE GEOCHEMISTRY OF UPPER JURASSIC VOLCANIC ROCKS IN LONGQUAN,ZHEJIANG,AND THEIR ORIGIN
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摘要: 龙泉地区上侏罗统火山岩为一套富钾贫钙的酸性火山岩,属钙碱系列,它是活动大陆边缘造山带中硅铝层地壳部分熔融所成岩浆的喷发产物。Abstract: The author considers that the Upper Jurassic volcanic rocks in Longquan, Zhejiang,are represented by a sequence of K-poor and Ca-poor acid volc- anic rocks,belonging the calc-alkaline series.They are the product of eru- ption of the magma produced by partial melting of the sialic crust in act- ive continental-margin orogens.
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