昌宁—孟连带洋脊、洋岛型火山岩研究  

STUDY ON OCEAN RIDGE,OCEAN ISLAND VOLCANIC ROCKS OF CHANGNING-MENGLIAN BELT

作　　者：沈上越[1] 冯庆来[1] 刘本培[1] 莫宣学[1] 

机构地区：[1]中国地质大学,湖北武汉430074

出　　处：《地质科技情报》2002年第3期13-17,共5页Geological Science and Technology Information

基　　金：国家自然科学基金资助项目 (4 9772 12 2 );"九五"国家科技攻关计划项目(96-914 -0 1-0 3 );国土资源部"九五"科技攻关项目 (95 -0 2 -0 0 1-0 2 )

摘　　要：在系统总结前人工作的基础上 ,结合自己的研究 ,建立了三江地区昌宁—孟连带晚古生代火山岩层序 ;对比了洋脊型火山岩与洋岛型火山岩在岩石组合、岩石化学及地球化学等方面的显著差别 。In this article, the authors have built a late Paleozoic stratigraphic sequence of Changning-Menglian belt according to the previous work of predecessor and their own study.They have also discussed the apparent differences between ocean ridge volcanic rocks and ocean island volcanic rocks in rock association, petrochemistry and geochemistry.At last,they point out that ocean ridge volcanic rocks and ocean island volcanic rocks of Changning-Menglian belt are the major components of paleo Tethyan multiisland ocean ocean crust structure of Southwest Yunnan.

关 键 词：三江地区 昌宁-孟连带 火山岩层序 洋脊型火山岩 洋岛型火山岩 洋壳 岩石化学 地球化学 

分 类 号：P588.14[天文地球—岩石学]