%0 Journal Article
%T Trace element geochemistry and classification of amphiboles of the Cenozoic high-potassium calc-alkaline volcanic rock series from north Qiangtang, Qinghai-Tibetan plateau.<br>青藏高原北羌塘新生代高钾钙碱岩系火山岩角闪石类型有痕量元素地球化学
%A Suzanne Y O'REILLYLAI ShaoCong
%A YI HaiSheng
%A LIU ChiYang
%A Suzanne Y O'REILLY
%A <br>赖绍聪
%A 伊海生
%J 岩石学报
%D 2002
%I 
%X Based on the electron microprobe and laser ablation inductively coupled plasma mass spectrometer (LA-ICP-MS) analyses, the major and trace element features of amphibole from the Cenozoic high-potassium calc-alkaline dacite of north Qiangtang are discussed in this paper. The result indicates that all of the amphiboles belong to calcic series. Their major elements imply that the dacite should be of crustal origin. And the amphiboles show the Sc, Ti, V, Cr, Co, Ni enrichment and the Th, U, Pb, Rb depletion. Especially, the amphiboles exhibit high content in rare earth element but no remarkable Eu depletion. It may imply that the Cenozoic high-potassium calc-alkaline volcanic rocks from north Qiangtang might be originated from the thickened eclogitic deep crust of Tibetan plateau by dehydration partial melting.
%K Amphibole
%K Major and trace element
%K Geochemistry
%K North Qiangtang
%K Qinghai-Tibetan plateau<br>角闪石
%K 主元素有痕量元素
%K 地球化学
%K 新生代火山岩
%K 北羌塘
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=087D141F9DA6367A&yid=C3ACC247184A22C1&vid=13553B2D12F347E8&iid=CA4FD0336C81A37A&sid=BCA2697F357F2001&eid=B91E8C6D6FE990DB&journal_id=1000-0569&journal_name=岩石学报&referenced_num=10&reference_num=26