云南德钦羊拉铜矿区地层研究  

THE STRATIGRAPHIC DIVISION OF YANGLA CU OREFIELD IN DEQIN,YUNNAN

作　　者：曾礼传 

机构地区：[1]云南省地质调查局大理矿产所,云南大理市671000

出　　处：《云南地质》2010年第1期84-89,共6页Yunnan Geology

基　　金：国家科技支撑计划项目(编号2006BAB01A07);中国地质调查局项目(1212010781001);973项目"(2009CB421007)等项目成果

摘　　要：羊拉铜矿区二叠纪嘎金雪山群属巨厚洋盆沉积,实际上由泥盆纪—二叠纪构造岩块高度混杂而成。岩石普遍发生绿片岩相变质作用,缺少古生物化石,原生岩层序难以恢复。本次工作发现牙形石,结合矿区沉积特征和金沙江洋演化历史,将地层修订为下泥盆统江边组岩块、中泥盆统-石炭系岩块、二叠系岩块,讨论了构造演化。The Permian Gajinxueshan Group of Yangla Cu orefield belongs to the ocean basin sediment with magnitude thickness, which is formed really by full melange of D - P structural rock blocks. The greenschist facies metamorphism of rock is popular, which lacks fossils. The recovery of sequence of original rock is difficult. The conodot has been discovered in our working, in combination with the sedimentary characteristics of orefield and the evolution history of Jinshajiang ocean, we have re -divided the strata into D1 Jiangbian Formation rock block, D2 - C rock block and P rock block and discuss ＋ ed the structure evolution of them.

关 键 词：嘎金雪山群 下泥盆统-二叠系 重新划分 构造演化 云南德钦羊拉 

分 类 号：P536[天文地球—古生物学与地层学]