河北高于庄组层序地层研究

Study on Sequence Stratigraphy of Gaoyuzhuang Formation in Yanshan Region

高于庄组是中国中元古界长城系出露最好、层序较为完整的地区。从沉积层序划分标志入手,对层序的主要类型及其特征进行了分析,结合层序界面和最大海泛的研究,将区内高于庄组划分为8个三级层序,3个二级层序,讨论和解释了各层序的构成和层序界面的识别。层序地层学研究表明,该区在长城系发生过一次完整的海平面升降旋回,以快速、广泛的持续海进为主。

In this article,we divide the strata of Yanshanian Gaoyuzhuang from the sequence stratigraphy of the study,and give a detailed description of all features of Gaoyuzhuang sequence.The characteristics of sequence features show :in deposition of Gaoyuzhuang period,the Yanshan area decline is steady,that cause a wide range of large-scale advance of sea,and build up the most extensive epeiric sea in the middle and Late Proterozoic.Sediments are dominated by Dolomite rock.