塔里木盆地哈得逊地区巴楚组地层序列及成因机理

发布时间：2018-04-13 23:02

  本文选题：塔里木盆地 + 成因机理　； 参考：《天然气地球科学》2017年07期

【摘要】：通过研究确定塔里木盆地哈得逊地区巴楚组地层序列类型及其成因机理,解决地层演化和沉积历史的相关争议。通过岩心、测井资料的分析及区域地层对比,确定哈得逊地区巴楚组东河砂岩段之上存在下泥岩段和生屑灰岩段。哈得逊地区东河砂岩段、下泥岩段、生屑灰岩段在石炭系早期依次沉积,此沉积序列为该区巴楚组标准沉积序列,该标准序列与塔里木盆地其他地区的东河砂岩段—下泥岩段—生屑灰岩段沉积序列一致。由于在沉积之后即受构造抬升、不均匀剥蚀及混积作用影响,该区大部分巴楚组标准地层序列不再完整,并形成角砾岩段,形成5种地层序列类型(自下而上):Ⅰ东河砂岩—下泥岩—生屑灰岩;Ⅱ东河砂岩—下泥岩—角砾岩;Ⅲ东河砂岩—下泥岩;Ⅳ东河砂岩—角砾岩;Ⅴ东河砂岩,此种地层序列在东河砂岩油藏区具有明显的分区性。对哈得逊地区巴楚组地层序列的正确认识对该区沉积环境和沉积层序、东河砂岩钙质来源和成岩作用、地震资料应用以及油气勘探等研究具有重要意义。
[Abstract]:The formation sequence types and genetic mechanism of Bachu formation in Hudson area of Tarim Basin are determined and the related disputes about stratigraphic evolution and sedimentary history are resolved.Based on the analysis of core, logging data and regional stratigraphic correlation, it is determined that there are lower mudstone member and lithogenic limestone member above Donghe sandstone member of Badeson formation in Hudson area.The Donghe sandstone member, the lower mudstone member and the sedimentary limestone member of Donghe formation in Hudson area were sequentially deposited in the early Carboniferous, which is the standard sedimentary sequence of the Bachu formation in this area.The standard sequence is consistent with the sedimentary sequence of Donghe sandstone-Lower mudstone member and bioclastic limestone member in other areas of Tarim Basin.Due to the influence of tectonic uplift, inhomogeneous denudation and mixing, most of the standard formation sequences of Bachu formation in this area are no longer complete and breccia formation is formed.Forming five types of stratigraphic sequence (from bottom to top: I Donghe sandstone-Lower mudstone -bioclastic limestone; 鈪，

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