华夏古陆古元古代变质火山岩的地球化学特征及其构造意义.pdfVIP

100005691999015 (03) 036471 A cta P etrolog ica S inica　岩石学报 华夏古陆古元古代变质火山岩的地球化学特征及其构 造意义 1 2 1 1 1 1 李献华 　李寄　 　刘颖 　陈多福 　王一先 　赵振华 1 中国科学院广州地球化学研究所, 广州　510640; 2 台湾大学地质学系, 台北 10617 1 , , 510640; Guang z hou Institu te of Geochem istry Ch inese A cad em y of S ciences Guang z hou 2 , , 10617 D ep artm ent of Geology T aiw an U niversity T aip ei 收稿, 改回 L i X ianhua , L ee Ch iyu, L iu Y ing, Chen D uofu, W ang Y ix ian and Zhao Zhenhua 1999Geochem istry character istics of the ( ) - ′ , 15 3 : 364～ 371 Paleoproterozo ic m eta volcan ics in the Cathaysia block and it s tecton ic sign if icance A cta P etrolog ica S in ica Abstract　　Based on geochem ical signatures, tw o suites of the Paleop ro terozo ic amph ibo lites ( Group 1 and 2 ) in the , , 1 Cathaysia B lock NW Fujian SW Zhejiang are recognized Group rock s are characterized by h igh N b Y ratio s w ith L R EE , 2 enriched patterns and W ith in P late Basalt type trace elem ent features w h ilst Group rock s have low N b Y ratio s w ith flat to 1 L R EE dep leted patterns and M OBB like trace elem ent characters Group amph ibo lites and associated m etamo rpho sed felsic ( ) “ ”