摘要
在地层构造区划分的基础上 ,系统论述了前南华纪岩石地层层序、宏观特征、沉积环境、原始构造环境。综合垂向序列的时间特征、原始构造环境、构造界面、将前南华系划分为两个构造层。第一构造层为蓟县纪—青白口纪早期弧后边缘盆地沉积。第二构造层为青白口纪晚期大陆裂谷火山—沉积岩。并以此为框架 。
The stratigraphic order, feature, sedimentary environment, original tectonic environment of Pre-Nanhua system are discussed on the basis of division of stratigraphic tectonic area. The Pre-Nanhua system are divided into two tectonic strata by the time, original tectonic environment and tectonic interface. The first one is back arc basin sediment in margin of back arc during Jixian Period-early Qingbaikou Period. The second one is volcanic-sediment in continental rift during late Qingbaikou Period. The correlation of neighbor strata have been discussed.
出处
《资源调查与环境》
2002年第2期94-106,共13页
Resources Survey & Environment
关键词
岩石地层
弧后边缘盆地
造山带
大陆裂谷
地层划分
前南华纪
皖南
basin orogenic belt of back arc
continental rift
classification of strata
Prenanhua Period
south Anhui
