准噶尔盆地南缘小渠子背斜T／P同构造不整合几何学、运动学特征及地质意义  

The geometry and kinematic characteristics of T/P syn-tectonic unconformities at Xiaoquzi anticline and its geological significance to tectonic evolution at the south margin of Junggar Basin

作　　者：马德龙 潘建国[2,3] 张虎权 王宏斌[2,3] 王彦君[2,3] 魏彩茹 陈雪珍[2] 

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]中国石油勘探开发研究院西北分院,兰州730020 [3]中国石油油藏描述重点实验室,兰州730020

出　　处：《地质科学》2018年第1期146-154,共9页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：国家科技重大专项（编号：2016ZX05003.002）资助.本文在撰写过程中得到了何登发导师的细心指导,再此表示衷心感谢!

摘　　要：为探讨准噶尔盆地南缘二叠纪-三叠纪盆地构造性质及构造演化过程，笔者对盆地南缘小渠子背斜保存较完整的T／P不整合进行了几何学、运动学和沉积韵律旋回特征的分析。T／P不整合具有同构造不整合的特点，表现为不整合之下削蚀、之上超覆，是由于盆地南缘经历晚二叠世-早三叠世区域性挤压作用造成的。通过对小渠子地区深层地质结构的分析，认为晚二叠世-早三叠世的构造演化过程与早石炭世伸展断陷的反转密切相关。In order to obtain the tectonic property and evolution at the south margin of Junggar Basin during Triassic and Permian, the authors make close study about the geometry and kinematics of T/P unconformity and sedimentary cycles in Xiaoquzi anticline at the southern margin of Junggar Basin. The T/P unconformity is a syn-tectonic unconformity with the characteristics of erosion at the top of middle Permian and overlapping at the Lower Triassic, which was caused by the rapid uplifting of Xiaoquzi area during Late Permian to Early Triassic. Through deciphering the deep structure at Xiaoquzi anticline, we found that the Late Permian to Early Triassic compressional tectonic environment has much close relationship with inversion of the Early Carboniferous extensional structure.

关 键 词：准噶尔盆地南缘 小渠子背斜 二叠纪一三叠纪 同构造不整合 构造反转 

分 类 号：P542[天文地球—构造地质学]