辽宁太子河盆地元古宙—古生代层序地层

太子河盆地元古宇-古生界划分为23个三级层序,归并为3个二级超层序,分别命名为偏岭超层序(Qn)、太子河超层序(∈-O)和牛心台超层序(C-P).本文对各层序的特征、界面性质、沉积相和相序等作了较详细的描述;对石炭-二叠纪陆相地层,尝试使用不同于海相地层的层序地层学术语;对太子河盆地的演化阶段及其特征作了划分和总结.这是首次对太子河盆地进行的层序地层学研究.

PROTEROZOIC- PALEOZOIC SEQUENCE STRATIGRAPHY IN THE TAIZI RIVER BASIN OF LIAONING PROVINCE

In the Taizi River basin, 23 sequences (orthosequence) are recognized in the strata from Late Proterozoic (Qingbaikou System ) to Paleozoic (Cambrian-Permian System), and may be merged into 3 supersequences. They are named as the Pianling supersequence (Qn), the Taizihe supersequence (∈ O), and the Niuxintai supersequence (C P). This paper introduces and describes the general features, sequence boundary surface, sedimentary facies and facies sequence of each sequence and supersequence. Some special terms different from that of the marine sequence stratigraphy are applied to describe the Carboniferous Permian terrestrial sequences of the region. Finally, the evolution and development of the Taizi River basin are summarized and divided into 4 stages: 1) siliciclastic sea shore stage; 2) terrigenous clastic pedestal stage; 3) carbonate platform stage;and 4) basin shriveling and withering away stage. Actually, this is the first study of sequence stratigraphy in the Taizi River basin up to date.