【摘要】：以層序地層學(xué)、沉積學(xué)、構(gòu)造地質(zhì)學(xué)理論為指導(dǎo),利用地震、鉆井、測(cè)井等地質(zhì)和地球物理資料,將哈薩克斯坦南圖爾蓋盆地Aryskum坳陷北部下侏羅統(tǒng)-下白堊統(tǒng)劃分為10個(gè)三級(jí)層序,細(xì)分出19個(gè)體系域,結(jié)合構(gòu)造演化特征將該盆地層序充填分為4個(gè)時(shí)期:斷陷早期(SQ1~SQ3)、斷陷后期(SQ4~SQ6)、斷坳轉(zhuǎn)換期(SQ7~SQ8)、坳陷期(SQ9~SQ10)。通過(guò)單井、連井沉積相研究與對(duì)比,總結(jié)了沉積相在空間上的演變規(guī)律,建立了南圖爾蓋盆地Aryskum坳陷北部沉積相模式,該模式分4個(gè)階段,即與斷陷早期相對(duì)應(yīng)的以層序快速充填為特征的扇三角洲-湖泊沉積階段(階段Ⅰ)、與斷陷后期相對(duì)應(yīng)的以層序體系域三分為特征的扇三角洲-湖泊-正常三角洲沉積階段(階段Ⅱ)、與斷坳轉(zhuǎn)換期相對(duì)應(yīng)的以層序高位體系域發(fā)育為特征的辮狀河三角洲-正常三角洲-湖泊沉積階段(階段Ⅲ)、與坳陷期相對(duì)應(yīng)的以層序體系域二分為特征的河流-正常三角洲-湖泊沉積階段(階段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，

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