南图尔盖盆地Aryskum坳陷北部层序发育特征及充填演化模式
发布时间：2019-04-11 21:16
【摘要】：以层序地层学、沉积学、构造地质学理论为指导,利用地震、钻井、测井等地质和地球物理资料,将哈萨克斯坦南图尔盖盆地Aryskum坳陷北部下侏罗统-下白垩统划分为10个三级层序,细分出19个体系域,结合构造演化特征将该盆地层序充填分为4个时期:断陷早期(SQ1~SQ3)、断陷后期(SQ4~SQ6)、断坳转换期(SQ7~SQ8)、坳陷期(SQ9~SQ10)。通过单井、连井沉积相研究与对比,总结了沉积相在空间上的演变规律,建立了南图尔盖盆地Aryskum坳陷北部沉积相模式,该模式分4个阶段,即与断陷早期相对应的以层序快速充填为特征的扇三角洲-湖泊沉积阶段(阶段Ⅰ)、与断陷后期相对应的以层序体系域三分为特征的扇三角洲-湖泊-正常三角洲沉积阶段(阶段Ⅱ)、与断坳转换期相对应的以层序高位体系域发育为特征的辫状河三角洲-正常三角洲-湖泊沉积阶段(阶段Ⅲ)、与坳陷期相对应的以层序体系域二分为特征的河流-正常三角洲-湖泊沉积阶段(阶段Ⅳ)。
[Abstract]:Guided by the theories of sequence stratigraphy, sedimentology and tectonic geology, using geological and geophysical data such as earthquakes, drilling and logging, The Lower Jurassic-Lower Cretaceous in the northern part of the Aryskum depression in the South Turgay basin of Kazakhstan is divided into 10 third-order sequences, which are subdivided into 19 individual system tracts. Combined with the characteristics of tectonic evolution, the sequence filling of the basin is divided into four periods: early fault depression (SQ1~SQ3). Late fault depression (SQ4~SQ6), fault depression transformation (SQ7~SQ8), depression period (SQ9~SQ10). Based on the study and correlation of sedimentary facies in single well and connected well, the evolution regularity of sedimentary facies in space is summarized, and the sedimentary facies model in the northern part of Aryskum depression in South Turkei Basin is established. The model is divided into four stages. That is, the fan delta-lacustrine sedimentary stage (stage I), which is characterized by rapid filling in sequence, corresponds to the early stage of fault depression. Fan-delta-lacustrine-normal delta sedimentary stage (stage 鈪，
本文编号：2456752
[Abstract]:Guided by the theories of sequence stratigraphy, sedimentology and tectonic geology, using geological and geophysical data such as earthquakes, drilling and logging, The Lower Jurassic-Lower Cretaceous in the northern part of the Aryskum depression in the South Turgay basin of Kazakhstan is divided into 10 third-order sequences, which are subdivided into 19 individual system tracts. Combined with the characteristics of tectonic evolution, the sequence filling of the basin is divided into four periods: early fault depression (SQ1~SQ3). Late fault depression (SQ4~SQ6), fault depression transformation (SQ7~SQ8), depression period (SQ9~SQ10). Based on the study and correlation of sedimentary facies in single well and connected well, the evolution regularity of sedimentary facies in space is summarized, and the sedimentary facies model in the northern part of Aryskum depression in South Turkei Basin is established. The model is divided into four stages. That is, the fan delta-lacustrine sedimentary stage (stage I), which is characterized by rapid filling in sequence, corresponds to the early stage of fault depression. Fan-delta-lacustrine-normal delta sedimentary stage (stage 鈪，
本文编号：2456752
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