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.
出处
《新疆地质》
CAS
CSCD
2005年第3期234-238,共5页
Xinjiang Geology
关键词
巴里坤
卡拉岗组
陆相火山岩
火山机构
构造演化
Balikun
kalagang rock formabion
terrestrial facies lava
volcanic organization
construct evolvement
