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Tectonic relationship between the Kelameili range and the Dajing depression: Insights into the Carboniferous tectonic-sedimentary framework
Petroleum Exploration and Development ( IF 7.0 ) Pub Date : 2020-02-19 , DOI: 10.1016/s1876-3804(20)60003-9
Lei ZHANG , Dengfa HE , Zejun YI , Di LI

Based on comprehensive analysis of typical outcrops, latest deep wells drilled and high resolution seismic profiles in the study area, we examined the geologic structure of the Kelameili range, and analyzed the structural relationship between the Kelameili range and the Dajing depression, and discussed the tectonic-sedimentary framework in different periods of Carboniferous by using axial surface analysis and balanced section techniques. Understandings in three aspects are achieved: (1) The study area experienced five stages of compressional tectonic movements, the Early Carboniferous, the Late Carboniferous, the Middle-Late Permian, Late Cretaceous and Paleogene, and three stages of extensional tectonic movements, the middle-late Early Carboniferous, the middle-late Late Carboniferous and Early Permian. At the end of the Early Permian and the Mid-Late Cretaceous, the tectonic wedges moved southward respectively. (2) The Kelameili range and Dajing depression had the first basin-range coupling during the early Early Carboniferous, basin-range decoupling in the following middle-late Early Carboniferous to the Early Permian, then basin-range strong recoupling in the Middle Permian, and the basin-range coupling had been inherited in the subsequent Indosinian, Yanshanian and Himalayan movements. (3) During the early Early Carboniferous, the study area was a foreland basin where the Dishuiquan Formation source rock developed; in mid-late Early Carboniferous, a series of NW- and NWW-trending half-garben fault basins developed, where the Songkaersu Formation volcanic reservoir formed. In late Early Carboniferous, the study area entered into depression basin stage after rifting, and the Shuangjingzi Formation source rock developed; in the mid-late Late Carboniferous, Batamayineishan fault basin emerged, and the Upper-Carboniferous volcanic reservoir was formed, affected by the tectonic compression during late Carboniferous and Mid-Permian, the Batamayineishan Formation suffered extensive erosion, and only partially remains in the piedmont depression zone.



中文翻译:

克拉美里山脉与大jing陷之间的构造关系:石炭纪构造-沉积构造的认识

在对典型露头,最新深井钻探和高分辨率地震剖面进行综合分析的基础上,我们研究了克拉美里山脉的地质构造,分析了克拉美里山脉与大井depression陷之间的构造关系,并探讨了构造利用轴向表面分析和平衡断面技术,在石炭纪不同时期形成沉积体系。在三个方面取得了认识:(1)研究区经历了5个阶段的压缩构造运动,即早期石炭纪,晚期石炭纪,中晚期二叠纪,白垩纪和古近纪,以及伸展构造运动的三个阶段,即中部。晚期石炭​​纪晚期,中晚期石炭纪晚期和二叠纪早期。在早二叠世末期和中晚白垩世末期,构造楔块分别向南移动。(2)在早期石炭纪早期,克拉美里山脉和大井depression陷首先发生盆-盆耦合,在随后的中晚期石炭纪到早二叠世先进行盆-盆耦合,然后在中二叠纪进行盆-盆强耦合。在随后的印支,燕山和喜马拉雅运动中都继承了盆-盆耦合。(3)石炭纪早期,研究区为前陆盆地,发育滴水泉组烃源岩。在早期石炭纪中后期,发育了一系列西北向和西北向发展的半加本断层盆地,形成了松卡尔苏组火山岩储层。在石炭纪晚期,分裂后,研究区进入entered陷盆地阶段,形成了双井子组烃源岩。在晚石炭世晚期,出现了Batamaiyineishan断层盆地,并形成了上石炭统火山岩储层,受晚石炭世和中二叠世时期构造压缩的影响,Batamaiyineishan组遭受了广泛的侵蚀,仅部分保留在山麓中抑郁区。

更新日期:2020-02-19
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