摘要
研究了叶赫组的层序、环境类型、生物群特征及外延后认为，叶赫组在大黑山东南侧、伊通－舒兰地堑及其周边均有不同程度的发育，基本上是泉头组之后至嫩江组之间的同期异相沉积。
the Yehe formation,different from Gudianzi Fom.and Nenjiang Fom.inlithology and fossil assemblages,should be posited timely on the top of Quantou Fom.inthe light of study of sequences,sedimentary environment biotic characteristics anddistribution. Yehe Fom.and Gudianzi Fom. were formed in different sedimrntary systermat the same time. Its distribution in Yitong-Shulan Graben and southeast side of Dahei mountain hasgreat significence in studing the relationship between Songliao basin and Yitong-ShulanGraben and their evolution history. also in exploring the oil resources.
