中国地质调查2016，Vol.3Issue(6)：49-56,8.
广东梅县地区晚中生代伸展构造特征
Characteristics of Late Mesozoic extensional structures of Meixian in Guangdong Province
摘要
Abstract
Meixian in Guangdong Province,is located in the Lianhuashan fault zone,southern part of Zhenghe-Dapu fault zone.The 1∶50 000 field geological survey and indoor analyses have indicated the existence of Late Mesozoic extensional structure system in the Meixian of Guangdong Province.This system consists of detachment fault and two stripper layers with different levels.Based on contact relationship and high-precise dating data of volcanic rocks,intrusive rocks and sedimentary rocks,we concluded that the time scale of this extensional struc-ture system ranges from Late Jurassic to Early Cretaceous (1 60-1 35 Ma),with the peak time of extension around 1 45 Ma.Lianhuashan fault zone was previously believed to be formed around the early Paleozoic,and now it is confirmed to be a detachment fault formed at the Late Jurassic.So the Zhenghe-Dapu fault extensional system al-so occurred in the Late Mesozoic.The results above showed that the dominant tectonic activity in the southern China occurred in the Mesozoic,providing a new reference model for the study of regional metallogenic rules of hydrothermal metal deposit in the southern China.关键词
广东梅县/晚中生代/伸展构造/莲花山断裂Key words
Meixian of Guangdong Province/Late Mesozoic/extensional fault/Lianhuashan fault分类
天文与地球科学引用本文复制引用
邸文,庄文明,李瑞,王建荣,陈俊锋,余德延..广东梅县地区晚中生代伸展构造特征[J].中国地质调查,2016,3(6):49-56,8.基金项目
中国地质调查局“广东1∶5万明山嶂煤矿、高陂圩、砂田圩、潭江圩四幅区域地质矿产调查（编号1212011220554）”项目资助。 （）
