华南地质与矿产2012，Vol.28Issue(1)：20-26,7.
湖南冷家溪群划分及同位素年龄约束
Subdivision and Isotopic Age of Lengjiaxi Group in Hunan Province
摘要
Abstract
According to regional rock assemblages and strata subdivision principle,Lengjiaxi Group can be subdivide into upper part of marine deep-water basin deposited fine clastic rocks（including Yijiaqiao Formation,Panjiachong Formation and Leishenmiao Formation） and lower part of basin slope turbidite deposited coarse clastic rocks（including Huangxudong Formation,Xiaomuping Formation and Dayaogu Formation）.The zircons from tuff interlayers of every Formation of Lengjiaxi Fromation are tested by SHRIMP U-Pb dating method to constraint the sedimentary ages,which indicated that the sedimentary age of Lengjiaxi Group is between 820 to 862 Ma,and belongs to early Neoproterozoic.关键词
划分对比/冷家溪群/同位素年龄/新元古代/湖南Key words
classification and correlation/Lengjiaxi Group/isotopic age/Neoproterozoic Era/Hunan province分类
地质学引用本文复制引用
孙海清,黄建中,郭乐群,陈俊..湖南冷家溪群划分及同位素年龄约束[J].华南地质与矿产,2012,28(1):20-26,7.基金项目
湖南省地质系列图件编制与综合研究 （）
国家自然科学基金重点基金项目《华南新元古代＂楔状地层＂沉积充填系列及其大地构造属性研究》（41030315）资助 （）
