地质论评Issue(1)：1-22,22.
华南扬子地区新元古代地层划分对比研究新进展
New Progress for the Stratigraphic Division and Correlation of Neoproterozoic in Yangtze Block,South China
摘要
Abstract
Yangtze Block,developed with a tact Neoproterozoic depositional record,provides a natural platform to study Neoproterozoic paleo-continent and sedimentary basin evolution.Before the Jinning—Sibao Orogeney from ca.850Ma to ca.820Ma,Yangtze Block had experienced arc—continent collision and arc—back basin filling during early Neoproterozoic.After the Orogeny,new-born rifting basin onset a new tectonic cycle,and toword the end of Nantuo glacial epoch (ca.635 Ma),South China had undergone an uneven journey from intensively volcanic activity to severely cold winter.During Banxi Period,accompanied by Rodinia Supercontinent breakup,a rifting basin depositional sequence had developed in Yangtze Block,and alternating with tree episodes magmatic—volcanic activity.At the end of Banxi Period,main blocks of Rodinia drifting away from each other,maybe,resulted into the beginning of Nanhua Great Glacial Period (NGGP)and globally falling of sea level.In fact,NGGP was not a true“Snowball Earth”,some intervals (such as Fulu Interval)developed.The deposition of Nantuo Glacial Epoch developed widely,which could be related to the continuously ascending of sea level.Therefore,the sequences of deposition and key events during Neoproterozoic were clear,and its stages were also obvious,these characteristics provide a nice condition for the Neoproterozoic stratigraphic division and correlation of Yangtze Block,South China.关键词
扬子陆块/新元古代/南华系/裂谷充填/南华大冰期/沉积序列Key words
Yangtze Block/Neoproterozoic/Nanhua System/rifting basin/Nanhua Glacial Period/sedimentary sequence引用本文复制引用
汪正江,杨菲,王剑,江新胜,孙海清,高天山,陈建书,邱艳生,杜秋定,邓奇..华南扬子地区新元古代地层划分对比研究新进展[J].地质论评,2015,(1):1-22,22.基金项目
本文是国家自然科学基金资助项目（批准号41372124，41072088，41030315，41302091）、中国地质调查局科技支撑项目（编号1212011121111）和油气调查评价项目（编号1212011220750）的成果。 （）
