新疆石油地质 ›› 1992, Vol. 13 ›› Issue (2): 141-148.

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库鲁克塔格地区兴地断裂以南中奥陶统与上奥陶统的接触关系

刘万祥   

  1. 塔里木石油勘探开发指挥部勘探处 库尔勒 841000
  • 收稿日期:1991-10-14 发布日期:2020-07-27

CONTACTINC RELATIONSHIP BETWEEN THE UPPER-AND MIDDLE ORDOVICIAN SEQUENCES TO THE SOUTH OF XINGDI FAULT IN KULUKTAK AREA, XINJIANG

Liu Wanxiang   

  1. Tarim Petroleum Exploration Headquarter, Karle 84100o
  • Received:1991-10-14 Published:2020-07-27

摘要: 库鲁克塔格地区位于塔里木盆地东北缘。该区奥陶系以兴地断裴为界,可分南、北两个相区。南区奥陶系主要为深海盆地相陆源碎屑浊积岩,北区主要为广海陆棚-台地相碳酸盐岩。本文根锯中奥陶统顶部地层缺失,中、上奥陶统呈角度桕交及中奥陶兢顶面有风化残积物等,论证丁南区的中奥陶统与上奥陶统为不整合接触,并把逢成这一不整合的构造运动称为雅尔当山运动。

关键词: 塔里木盆地, 库鲁克塔格地区, 奥陶系, 不整合, 雅尔当山运动

Abstract: The Kuluktak area is located the northeastern margin of Tarim Basin. The Ordovician sequences bounded by the Xingdi Fault can be divided into two sedimentary facles regions, among which the Ordovician sequence in mouthern region consists of abymal facles tarreatrial clastic turbidite and the northern one' dominated by open-marine continent shelf platform facles carbonate. In terms of the abmence of the top of middle Ordovician, the middle and upper Ordovician showing angulat intersoctian, and the preence of weathered residue, it is concluded that the middle and upper Ordoviclan formations in southern region are unconformable contact. The tectionic movement resulting in the unconformity is named as Yacrdangshan movement.