西昆仑山加里东期花岗岩类浅识  

PRELIMINARY DISCUSSION ON CALEDONIAN GRANITES IN WESTERN KUNLUN MOUNTAINS

作　　者：方锡廉 汪玉珍 

机构地区：[1]新疆维吾尔自治区地质矿产局地质矿产研究所

出　　处：《新疆地质》1990年第2期153-158,共6页Xinjiang Geology

摘　　要：西昆仑山可能有一个呈NW-SE向展布的加里东期花岗岩带存在.除了地质上的依据和判断以外.带内曾获得两个岩体单矿物钾-氩法年龄资料(445Ma、527.6Ma)及一个锆石铀-铅法年龄值(480.43±5Ma).岩体多属钙碱性系列,可能是一个铜、铅、金、稀有金属成矿远景区.岩带西侧的喀拉塔什—依萨克阿特—他龙深断裂可能是加里东期古板块的边界;而这一深断裂的西南侧的木吉—安大力达坂—康西瓦深断裂则是华力西期塔里木板块与伊朗—冈底斯板块间的界线.Geologists have disputet whether the Caledonian granites exist or not in Western Kunlun. Recently, the writer has obtained some exact data indicating a northwest-trending Caledonian granite belt.Meanwhile, the monomineralic potassium-argon dating from 2 rock bodies in 1980 showed 445Ma; and then in 1987 the isoch-ronism of uranium-lead dating from zircon showed 480.43±5Ma. On the basis of existing data the rock bodies are of alkali-lime series.Little but important evidence shows that the Caledonian granite belt is a potential area of mineralization for copper, gold and rare metals. The boundary Caledonian paleo-plate lies along the Karatax-Isakeat-Talong deepfault on the west side of the belt; and more to the south-west, the Muji-An-aaili Daban-Kengxiwa deep fault is the boundary of Variscian Tarim plate with Iran-Gandese plate,

关 键 词：加里东期花岗岩带 钙碱性系列 西昆仑山 

分 类 号：P5[天文地球—地质学]