新疆巴里坤县三塘湖北卡拉岗组火山岩特征  

KALAGANG LAVA FORMATION, NORTH SANTANGHU LAKE, BALIKUN, XINJIANG

作　　者：马雪[1] 冯成贵[2] 虞卫东[1] 

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局第一区域地质调查大队,新疆乌鲁木齐830011 [2]新疆维吾尔自治区地质矿产勘查开发局第七地质大队,新疆乌苏833300

出　　处：《新疆地质》2005年第3期234-238,共5页Xinjiang Geology

摘　　要：新疆东准噶尔巴里坤县三塘湖盆地以北老爷庙额仁山一带,广泛分布一套红色、红褐、黄色酸性火山岩,前人(1∶20万)将其归为下石炭统黑山头组(C1h)和中—上石炭统哈尔加乌组(C2—P1h),1999—2001年在这一带开展1∶5万区调时发现,这一套火山岩不整合于下伏地层之上,从而将火山岩从老爷庙组(D3l),黑山头组和哈尔加乌组中解体出来,划归为卡拉岗组(P1k),为一套陆相酸性火山岩.以喷溢相流纹岩、霏细岩为主,是造山后弛张期大陆板内火山岩,时代为早二叠世.A set of red, henna and yellow acidic igneous rock, spreading widely around the Laoyemiao Erenshan mountain of Santanghu basin of Balikun county in East Junggar of Xinjinag, was confirmed as Heishantou group of the Lower Carboniferous and the Haerjiawu group of Permo-Carboniferous by 1：200,000 regional geological mapping. During 1：50,000 geological mapping from 1999 to 2001, it was found that this set overlapped the substratum and could be divided into Kalagang group of the Lower Permian. A set of acidic igneous rock, including outpouring rhyolite, felsite, etc. is a continental intraplate volcanic rock of post-orogenic relaxation.

关 键 词：巴里坤 卡拉岗组 陆相火山岩 火山机构 构造演化 

分 类 号：P588.14[天文地球—岩石学]