摘要
中侏罗世龙山组广泛出露喀喇昆仑山一带的麻扎-康西瓦断裂以南地区以及阿克塔河、拖车湖、神仙湾、岔路口、甜水海等地,其界定和时代归属历来争议颇大。2012~2014年,神仙湾地区1∶5万区调,根据前人资料,结合1∶25万区调成果经综合分析,提出了新的认识：按中国地层指南要求把龙山组升级为群,对其下部砂砾岩层位新建阿克塔河组,上部灰岩层位新建岔路口组,完善了岩石地层序列;对该时期地质演化历史,以及提高区域成矿规律研究和地质找矿具有重大意义。
The Longshan Formation is exposed to the south of the Mazar-Kengxiwar fracture zone and in Aketa River basin, Tuoche Lake, Shenxianwan, Chalukou and Tianshui Lake in the Karakorum Mountains. Its age has been debatable. 1：50 000 regional geological survey during 2012-2014 changed the Longshan Formation into the Longshan Group which was divided into the Aketahe Formation composed of sandstone and conglomerate in the lower part and the Chalukou Formation composed of limestone in the upper part.
出处
《四川地质学报》
2016年第2期203-209,共7页
Acta Geologica Sichuan
关键词
地层
龙山群
喀喇昆仑山
神仙湾
Longshan Group
Shenxianwan
Karakorum Mountains
