地质论评2016，Vol.62Issue(5)：1093-1114,22.DOI:10.16509/j.georeview.2016.05.001
湘黔桂地区新元古代“下江群”地层划分对比研究--重新启用下江系的探讨
Study on Stratigraphical Division and Correlation of the Neoproterozoic“Xiajiang Group”in Hunan,Guizhou and Guangxi Province:Discuss on the Reboot of Xiajiang System
摘要
Abstract
With the disassembly of Qingbaikou system stratotype section of North China in recent years,there comes a controversial issue on the belonging of the Fangjingshan Group and Xiajiang Group in South China.Both the Fangjingshan Group and the Xiajiang Group were belonged to the Qingbaikou System in the chronostratigraphic chart of china(201 1 ~2014),the former (the same strata age of 870~820Ma)occurs below the surface of Wuling Movement,and the latter (the same strata age of 820 ~780 (720 )Ma)occurs just above the Wuling Movement and below the Nanhuan System, these bring inconvenience to the stratigraphical division and correlation in Precambrian.“Xiajiang Group”occurs just above the Wuling Movement and below the Nanhuan System (820 ~720Ma),as a formation of lift basin with wide distribution,complete exposion and well succession in Hunan, Guizhou and Guangxi province,which provides a natural ,ideal place and the material basis to solve this problem. On the basis of the stratigraphic study of the Nishi Group,Banxi Group,Xiajiang (Furongxi )Group,Danzhou (Gaojian)Group,detailed lithostratigraphic study ,division and correlation,and the filling sequence and changing lithofacies study of the “Xiajiang Group”in Hunan,Guizhou and Guangxi province,wo think that the Xiajiang Group has advantages of typical rock building combination,complete rock sequence,exposed continuously and clear division mark.Combining with the latest progress of chronostratigraphic study in this area,we reboot the“Xiajiang System”in this paper to restrain the study of the stratigraphical division and correlation in South China , and it also has a far~reaching significance in perfecting the table of Neoproterozoic strata in China.关键词
下江系/泥市群/板溪群/下江群/芙蓉溪群/丹州群/高涧群/湘黔桂/新元古界Key words
Xiajiang System/Nishi Group/Banxi Group/Xiajiang Group/Furongxi Group/Danzhou Group/Gaojian Group/Hunan,Guizhou and Guangxi Province/Neoproterozoic引用本文复制引用
陈建书,戴传固,彭成龙,卢定彪,王雪华,王敏,包立新,张德明,骆珊..湘黔桂地区新元古代“下江群”地层划分对比研究--重新启用下江系的探讨[J].地质论评,2016,62(5):1093-1114,22.基金项目
本文为华南新元古代楔状地层沉积充填序列及其大地构造属性研究（编号41030315），中国地质调查局地质调查项目华南扬子古大陆演化及其资源效应---“黔北梵净山地区及黔南摩天岭地区前寒武纪古大陆演化及沉积岩相古地理研究”（编号1212011121106），“贵州省地质系列图件编制与综合研究”（编号1212011120108）的成果。 （）
