高校地质学报2018，Vol.24Issue(3)：433-441,9.DOI:10.16108/j.issn1006-7493.2017116
珠江口盆地新近纪构造特征与演化
Neogene Tectonic Characteristics and Evolution of Pearl River Mouth Basin, South China
摘要
Abstract
Using abundant 3D seismic data, this paper analyzed the geometrical characteristics, and clarified the Neogene tectonic evolution process and discussed the regional dynamics mechanism of the Pearl River Mouth Basin. Pearl River Mouth Basin underwent tectonically stable period and tectonic activation period in the Neogene period. During the depositional period of the Zhujiang Formation, uplift zone and depression zone were all in a regional subsidence stage, only a few basin-controlling faults in the depression zone were still weakly active, the whole depression was in the stage of structural stability. While in the depositional period of Hanjiang Formation, the whole basin was in the tectonic activation period, and the depression zone showed continuous subsidence, the pre-existing basin-controlling faults became more active and are characterized by the movement of fault block. Dongsha uplift zone experienced three syn-deposition uplifts during the early depositional period of the Hanjiang Formation, the late depositional period of the Hanjiang Formation, and the depositional period of the Yuehai Formation. The uplift stage continued since the depositional period of the Wanshan Formation, and the conjugate strike-slip fault system composed of a subparallel EW dextral strike-slip fault zone and a NW sinistral strike-slip fault zone, and a series of NWW secondary tensile fractures occurred during this stage. The expansion of the South China Sea resulted in the tectonic stability of the basin, while the Neogene tectonic activation was closely related to an extensional setting caused by the obduction and arc-continent collision of the NW and NWW movement of the Philippine Sea Plate.关键词
构造演化/成因机制/新近纪/珠江口盆地Key words
tectonic evolution/genetic mechanism/Neogene/Pearl River Mouth Basin分类
天文与地球科学引用本文复制引用
胡阳,吴智平,何敏,王光增..珠江口盆地新近纪构造特征与演化[J].高校地质学报,2018,24(3):433-441,9.基金项目
国家科技重大专项(2016ZX05006-003) （2016ZX05006-003）
中央高校基本科研业务费专项资金(13CX06015A)联合资助 （13CX06015A）
