地质论评2011，Vol.57Issue(2)：185-192,8.
塔里木盆地上奥陶统桑塔木组混合沉积特征及控制因素
Mixed Sedimentary Characteristics and Controlling Factors of Upper Ordovician Sangtamu Formation in Tarim Basin
摘要
Abstract
Mixed sedimentation of terrigenous clastic and carbonate is a sedimentary phenomena has special sedimentation mechanism and significant. It is developed extensively in the Upper Ordovician Sangtamu Formation of the Tarim basin. This paper studied the mixed sedimentation in this area based on regional geological data, well logging data, observation of wells cores, indoor sample analysis. The results show that the research area is characterized by interactive sediments of terrigenous clastic and carbonate on the microscopic level, called "mixed sedimentary rock". And in the macro performance of the mixed sequence composed of terrigenous clastic rock, carbonate rock and mixed sedimentary rock. The mixed sequence is divided into 5 types of gradient, mutation-Ⅰ, mutation-Ⅱ, compound-Ⅰ, compound-Ⅱ. Mixed sedimentary environments are occurrence of sedimentary facies such as mixed tidal flat, mixed platform,mixed platform margin, mixed shelf. Combination of tectonic setting and guided by the sedimentary principle, this paper proposed a mixed sedimentation model of the Upper Ordovician Sangtamu Formation in Tarim basin. And further summarized and discussed controlling factors of the mixed sedimentation.关键词
塔里木盆地/上奥陶统/桑塔木组/混合沉积/控制因素Key words
Tarim basin/ Upper Ordovician/ Sangtamu Formation/ mixed sedimentation/ controlling factors引用本文复制引用
杨永剑,刘家铎,田景春,孟万斌,张翔,祝贺..塔里木盆地上奥陶统桑塔木组混合沉积特征及控制因素[J].地质论评,2011,57(2):185-192,8.基金项目
本文为国家科技重大专项(编号2008ZX05002-003的成果. （）
