新疆石油地质 ›› 2000, Vol. 21 ›› Issue (3): 208-212.

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塔中地区中、上奥陶统划分对比的主要认识

杨海军, 李勇, 刘胜, 李新生, 陈景山, 王振宇, 代宗仰   

  1. 中国石油天然气集团总公司塔里木石油分公司 新疆库尔勒841000
  • 收稿日期:1999-06-28 出版日期:2000-06-01 发布日期:2021-02-18
  • 作者简介:杨海军(1970-),男,工程师,石油地质, 1992年毕业于石油大学(华东)。 1)赵治信,等塔中地区奥陶系生物地层划分,科研动态(内部资料), 1996. 2)耿良玉,张师本,等.塔里木盆地覆盖区寒武-泥盆纪地层基准剖面建立及对比,“九五”阶段成果, 1997.

Classification and Correlation of Middle-Upper Ordovician in Tazhong Area and Its Key Understanding

Yang Haijun, Li Yong, Liu Sheng, Li Xinsheng, Chen Jingshan, Wang Zhenyu, Dai Zongyang   

  1. Enineer, Petroleum Geology, PetroChina Tarim Oil, CNPC, Korla, Xinjiang 841000
  • Received:1999-06-28 Online:2000-06-01 Published:2021-02-18

摘要: 根据古生物化石和岩性、电性特征,塔中地区中、上奥陶统自上而下可分为上奥陶统桑塔木组和中、上奥陶统良里塔格组,良里塔格组自上而下划分为泥质条带灰岩段、纯灰岩段和含泥灰岩段三个岩性段,它们在全区具有良好的可对比性。通过对比认为,塔中地区中、上奥陶统明显存在岩性地层穿时和同时异相现象,其与下奥陶统之间存在地层缺失和不整合。

关键词: 塔里木盆地, 中部, 中奥陶世, 晚奥陶世, 区域地层对比

Abstract: According to the palaeontologic fossils, lithologic and electrie properties, the Middle-Upper Ordovician in Tazhong area can be divided, from top to bottom, into Sangtamu formation(Upper Ordovician) and Lianglitager formation (Middle Ordovician) which can be subdivided into limestone member with muddy intercalation, pure limestone member and muddy limestone member. They are of good comparable behavior in the whole area. Hence it is considered that in Middle-Upper Ordovician of Tazhong area obviously exists lithostratigraphic diachroneity and synchronous aniso-facies phenomena which is in lack of and unconformity contact with Lower Ordovician.

Key words: Tarim basin, Middle, Middle Ordovician, Late Ordovician, Regional stratigraphic correlation

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