塔里木盆地西部石炭─二叠纪沉积体系及沉积相

根据30余条地面剖面,结合钻井、地震资料系统分析了塔里木盆地西部石炭—二叠纪沉积体系及沉积相演化特征。认为石炭—二叠纪为一个完整的海进至海退旋回期,在海进初期和海退末期为碳酸盐岩和碎屑岩混积时期。将石炭—二叠系划分为下石炭统（包括个别地区的下二叠统下部）混积陆棚沉积体系;上石炭统至下二叠统下部的碳酸盐岩台地沉积体系;下二叠统上部至上二叠统的陆源碎屑沉积体系。根据碳、氧同位素、微量元素等分析化验结果以及生物组合面貌,对古地形、古温度等古地理环境进行了分析。

SEDIMENTARY SYSTEM AND FACIES OF CARBONIFEROUS-PERMIAN IN WESTERN TARIM BASIN.

The evolution characteristics of sedimentary system and facies of Carboniferous-Permian in westem Tarim basin were systematically analysed on the basis of more than thirty outcrop sections, along with drilling and seismic data. It is suggested that Carboniferoius-Permian is a complete period of transgression-regression cycle, where carbonate and clastic rock amalgamated in early period of transgression and late period of regression. Three sedimentary systems were divided regarding Carbaniferous-Permian: Lower Carboniferous(including lower part of Lower Permian in very few areas) amalgamated continental shelf; Upper Carboniferous-lower Lower Permian carbonate platform, and upper Lower Permian-Upper Permian terrestrial clastic, sedimentary facies maps of seven periods were made. An attempt to reconstruct paleotemperature and paleogeography settings was made according to the experimental results of carbon and oxygen isotope, and trace element.