扬子区黄龙组的划分与对比

Division and correlation of the Huanglong Formation in the Yangzi region

上石炭统黄龙组一名系沿袭1930年李四光、朱森研究宁镇山脉旧义“栖霞灰岩”时所创之黄龙灰岩,或称黄龙群。笔者对川东黄龙组的岩石化学和光谱分析、岩石薄片和古生物鉴定等资料整理与综合对比,特别是利用岩石化学成份、微量元素、以及它们之间的比值来进行对比,发现川东黄龙组虽为复杂的潮坪沉积,但仍有较好的对比标志,三分段明显。自下而上三分为雷音铺段、福成寨段和川东段。与黔西威宁组所建的三个带相吻合,并对各时的沉积相进行了研究。

Based on many data on petrochemical composition, trace element, thin section and fossils from drilling cores in eastern Sichuan, a division anil correlation o?the complicated tidal flat sediments in the Upper Carboniferous Huanglong formation in eastern Sichuan is dealt with in this paper.These sediments are divided ascendingly into the Leiyingpu, Fuchengzhai and Chuandong Members and correlated with three fusulinid-bearing beds in the Upper Carboniferous Weining Formation in western Guizhou.The division and correlation made in the past are dealt with also.