中国地质调查2016，Vol.3Issue(4)：29-36,8.
关于湘西北红岩溪地区沉积－构造－成矿研究的一些认识
Research on sedimentary tectonic metallogenic of Hongyanxi area in the northwest Hunan
摘要
Abstract
Hongyanxi area in the northwest of Hunan is on the south central of Xiangxi-Exi polymetallic metallo-genic belt and it belongs to the southeast of upper Yangtze region.The major sedimentary formations are from Cambrian to Silurian and there are many Pb-Zn deposits along Hongyanxi fracture with northeast strike.These Pb-Zn deposits are in the limestone of Tongzi Formation and Honghuayuan Formation of Ordovician period.First-ly,this paper used stratum,rock and tectonic feature to characterize stratum,rock and tectonic feature about the Pb-Zn mine,found out the metallogenic geological background and qualification,and summarized the metallo-genic law.This study also analyzed the forming mechanisms of the storm deposit in Tongzi Formation,bioherm limestone in Honghuayuan Formation,crazing construction in Baota Formation and turbidities of far source in Xin-tan Formation.So the model of Ordovician -Silurian sedimentary tectonic evolution was built,which was from passive continental margin (extensional system)to foreland basin (compressional system).Secondly,this paper investigates the connection between fracture and Pb-Zn deposits,and found out the faults strike to northeast and north-north-east are the ore-transmission structures,and those pointing to northwest are ore-hosting struc-tures.Also the form of metallogenic environment of Pb-Zn deposit from aspect of fluid inclusion was discussed. The results show the mineralizing hydrothemal is similar to the hot brine in the basin,which is originally coming from interlayer and meteoric water.Finally,the Pb-Zn metallogenic model was built.关键词
奥陶系/志留系/演化模型/沉积-构造/铅锌成矿/湖南红岩溪Key words
Ordovician/Silurian/evolution model/sedimentary-tectonic/Pb-Zn metallogenesis/Hongxiyan area of Hunan分类
天文与地球科学引用本文复制引用
梁恩云,刘伟,刘耀荣,黄乐清,刘庚寅,彭能立,曹解华..关于湘西北红岩溪地区沉积－构造－成矿研究的一些认识[J].中国地质调查,2016,3(4):29-36,8.基金项目
中国地质调查局“湖南1∶5万召市镇、红岩溪镇、咱果坪、洗车河幅区域地质矿产调查（编号1212011220510）”和“湖南1∶5万尹家溪、溪口、三岔村幅区域地质矿产调查（编号12120114066201）”项目联合资助。 （）
