新疆柯坪地区早二叠世早期菊石的地质意义

新疆柯坪地区早二叠世早期菊石可划分为:以Properrinites为代表的下石菊层(扎尔加克组)及以Artinskia为代表的上菊石层(巴立克立克组),它们分别相当于我国华南龙吟组,栖霞组,大体与苏联阿舍利阶—萨克马尔阶、阿丁斯克阶相当.柯坪早二叠世早期菊石群是以乌拉尔类型为主,夹有少数特提斯海类型的混生动物群.柯坪地区的Artinskia菊石群与乌拉尔地区及我国青海、四川、广西、福建等地霞栖组中的Artinskia可以对比,故认为:柯坪地区在早二叠世早期是与乌拉尔海、南天山海糟、昆仑—阿尼玛卿—金沙海糟,以及扬子浅海、东南浅海等广海海域相通.

THE AMMONOIDS OF EARLY STAGE OF EARLY PERMIAN AND IT'S GEOLOGIC SIGNIFICANCE IN KALPIN AREA, XINJIANG

The ammonoids bearing lower part stratum of Lower Permian may be divided into: the lower ammonoids layer represented by Properrinites ( Zarjak formation) and the upper ammonoids layer represented by Artinskia ( Balikiljk formation).They are comparable with Longyin and Qixia formations in South China, meanwhile, approximately with Asselian-Sakmarian, Artinskia stages respectively. The ammonoids of eary stage of Lower Permian in Kalpin area is mainly of Ural type and intercalated with some mixed fauna of Tethys-type. The ammonoids Artinskia from Kalpin may be correlated with that of Ural in Soveit Union, and that from Qixia formation in Qinghai, Sichuan, Guangxi, Fujian provinces. Hence. the water in Kalpin area of Early Permian was communicated with Ural sea , South Tianshan trough, Kunlun-A'nyemaqen-Jinsha trough and Yangtze, South-east China shelf.