Fold structure pattern in southwestern Qaidam Basin
-
摘要: 依据构造剖面特征和变形历史,按成因可将柴达木盆地西南区构造分为:冲断褶皱、断展褶皱、滑脱褶皱、底辟(泥拱)和复合型褶皱5种主要构造类型。冲断褶皱构造以基底卷入强烈隆升的单向挤压不对称褶皱构造为主要特征,主要分布于昆北断隆带;断展褶皱构造以基底卷入单向挤压断层扩展不对称褶皱构造为主要特征,主要分布于尕斯—扎哈泉断褶带;滑脱褶皱构造以中浅层滑脱型近于对称褶皱构造为主要特征,主要分布于英雄岭滑脱断褶带和中央坳陷带以及尕斯—扎哈泉断褶带浅部;底辟构造(泥拱构造)以塑性泥岩上拱为主要特征,主要分布于中央坳陷带和英雄岭滑脱断褶带东部;复合褶皱构造由断展和滑脱型共同作用形成,主要分布于尕斯—扎哈泉断褶带、英雄岭滑脱断褶带的西段。Abstract: Based on the studies of tectonic profile and deformation history,the structures in the southwestern Qaidam Basin have been divided into 5 categories according to their genetic mechanisms: thrust fold structure,fault-propagation fold structure,detachment fold structure,diapiric structure(mud diapir structure) and composite fold structure.The thrust fold structure distributes in the Kunbei fault-uprising belt,mainly characterized by the involving of basement into severely-uprising unilaterally extruding asymmetrical fold.The fault-propagation fold structure locates in the Gasi-Zhahaquan fault-fold belt,mainly characterized by the involving of basement into unilaterally extruding fault-propagation asymmetrical fold.The detachment fold structure locates in the Yingxiongling detachment fold belt and the central depression as well as the shallow layer of the Gasi-Zhahaquan fault-fold belt,mainly characterized by detachment fold which is approximately symmetrical in middle-shallow layer.The diapiric structure(mud diapir structure) is characterized by the upwarp of plastic mudstone and usually distributes in the east of the central depression and the Yingxiongling detachment fold belt.The composite fold structure is composed of the trust-propagation and the detachment fold structures.
-
Key words:
- southwestern Qaidam Basin /
- fold /
- tectonic pattern /
- mud diapir structure
-
[1] 徐凤银,彭德华,侯恩科.柴达木盆地油气聚集规律及勘探前景[J].石油学报,2003,24(4):1-6. [2] 陈艳鹤,刘震,党玉琪,等.柴达木盆地构造演化对油气藏形成和分布的控制作用[C]//张一伟.第四届油气成藏机理与资源评价国际学术研讨会论文集.北京:石油工业出版社.2008:140-148. [3] 李玉喜,庞雄奇,汤良杰,等.柴西地区近南北向构造系统及其控油作用分析[J].石油勘探与开发,2002,29(1):65-68. [4] 倪金龙,王鹏,杜小亮,等.柴达木盆地西南部新生代构造样式及其动力学特征[J].油气地质与采收率,2009,16(1):9-12. [5] 李明杰,郑孟林,曹春潮,等.柴达木古近纪一新近纪盆地的形成演化[J].西北大学学报(自然科学版),2005,35(1):87-90. [6] 戴俊生.柴达木盆地构造样式控油作用分析[J].石油实验地质,2000,22(2):121-124. [7] 陈世悦,徐凤银,彭德华.柴达木盆地基底构造特征及其控油意义[J].新疆石油地质,2000,21(3):1-7. [8] 尚尔杰.柴达木盆地北缘西段第三系构造基本样式及石油地质意义[J].现代地质,2001,15(4):421-424. [9] 王明儒.柴达木盆地"厚顶"构造及其形成机理[J].新疆石油地质,2003,24(4):276-280. [10] 戴俊生,曹代勇.柴达木盆地构造样式的类型和展布[J].西北地质科学,2000,21(2):57-63. [11] 余一欣,汤良杰,马达德,等.柴达木盆地构造圈闭特征与含油气性[J].西安石油大学学报(自然科学版),2006,21(5):1-5. [12] 刘和甫.沉积盆地地球动力学分类及构造样式分析[J].地球科学——中国地质大学学报,1993,18(6):699-724. [13] Lowell J D.Structural styles in petroleum exploration[M].Tulsa:OGCL Publications,1987:1-38. [14] 王燮培,费琪,张家骅.石油构造分析[M].武汉:中国地质大学出版社,1990. [15] 李德生.中国含油气盆地构造学[M].北京:石油工业出版社,2002. [16] Chapman R E.石油地质学[M].李明诚,译.北京:石油工业出版社,1989. [17] 郭泽清,钟建华,刘卫红,等.柴达木盆地西部第三系异常高压与油气成藏[J].石油学报,2004,25(4):13-18. [18] 曹海防,闫林,夏斌,等.柴西南古近系和新近系异常压力与油气成藏[J].新疆石油地质,2007,28(3):282-285. -
计量
- 文章访问数: 5248
- HTML全文浏览量: 54
- PDF下载量: 2924
- 被引次数: 0