甘新蒙北山北带北亚带甘肃段的岩浆岩地质特征  

GEOLOGICAL CHARACTERISTICS OF IGNEOUS ROCKS DISTRIBUTED IN GANSU SECTION OF SUBNORTH BELT OF BEISHAN MOUNTAIN LOCATED IN BORDER OF GANSU-XINJINAG-MONGOLIA

作　　者：孙新春[1] 程昱辰[1] 黄增保[1] 魏志军[1] 

机构地区：[1]甘肃省地质调查院,甘肃兰州730000

出　　处：《甘肃地质》2009年第3期8-13,31,共7页Gansu Geology

基　　金：中国地质调查局区域地质调查项目(200213000020)<甘肃1:25万红宝石幅>区调成果

摘　　要：研究区地处甘肃省肃北蒙古族自治县红石山一线以北,大地构造处于哈萨克斯坦板块东端南缘,隶属四顶黑山─雀儿山古生代岩浆弧带,总体上呈近EW向展布。依据侵入岩活动时代和侵入岩特征以及与构造的关系,划分出三叠纪小草湖超单元(TX)和马鞍山超单元(TM),二叠纪干河梁超单元(PG);石炭─二叠纪四顶黑山序列(C-PS)、双沟山序列(C-PSH)和大鱼山序列(C-PD),以及石炭纪的四顶黑山基性─超基性杂岩(CVS)等。Survey area lies in Subei county of Gansu Privince, tectonicaly belongs to Sidinghishan-Queershan magatic arc belt in paleozoic which situated on the east-south margin of Kazabstan paleoplate. It tends to nearly east-west direction.Its material compositions there are the Paleozoic strata, the intrusive rocks in Triassic and carboniferovs, the main fault in the north of sidingbishan-shuang goushan. The intrusive rocks include Triassic Xiaocaohu Superunit and manshan Superunit, Paleozoic Ganheliang Superunit, Carboniferous-Paleozoic Sidinghishan Sequences, Shuarggoushan Sequences and Dayushan Sequences, Carboniferous, Sidinghishan ba- sic-uhrabasic rocks.

关 键 词：北山北带北亚带 地质特征 岩浆岩 甘肃段 

分 类 号：P588.1[天文地球—岩石学]