新疆皮山克孜里奇曼生物礁

KEZILIQIMAN REEF IN PISHAN, XINJIANG

彭德堂 龚文平 郭成贤 高振中 李维锋

Peng Detang Gong Wenping Guo Chengxian Gao Zhenzhong Li Weifeng

生物礁位于新疆皮山县桑株乡克孜里奇曼村南东500m处,属下二叠统克孜里奇曼组。礁核厚61.8m,出露最大宽度300m,与礁翼层理清晰的颗粒灰岩、中至薄层含泥灰岩和生物屑灰岩星指状接触。造礁生物以群体四射珊瑚、串管海绵、蓝绿藻和管壳石为主,苔藓虫、纤维海绵和水螅次之,多数保持了原始生长状态。造礁生物在垂向上具有明显的分带性,据此可分为障积灰岩、障积一骨架灰岩和粘结灰岩三个微相段,分别相当于礁体发育的定殖-拓殖阶段、泛殖阶段和统殖阶段。

A reef situated 500m southesast of Keziliqiman, Pishal County, Xinjiang belongs to theKeziliqiman Formation of the Lower Permian. The reef core is 57.6m thick and its maximumexposure is up to 300m across. The reef flank, consisting of grain limestone, middle to thinbedded marly limestbne and bioclactic limestone, is connected with the reef core by interfingering.Reef-building organisms consist chiefly of colonial tetracorals, Sphinctozoas, blue-greenalgae and Tubiphytes and then bryozoans, Inozoas and hydrozoans. Most of the organismshave kept their original growth patterns. The orgamisms could be divided into 4 micro-factessuch as baffle limestone, baffle-skeletal limestone, bound limestone and reef debris limestoneand 4 stages of reef evolution correspondingly based on the vertical zonation.

10.11743/ogg19950312