| Title | Cenozoic subsidence history of the Pearl River Mouth Basin, northern South China Sea |
| Authors | Ma, Ming Liu, Chiyang Qi, Jiafu Zhang, Dongdong Zhang, Shaohua Wang, Jianqiang Miao, Quanyun |
| Affiliation | Northwest Univ, State Key Lab Continental Dynam, Dept Geol, Northern Taibai Str 229, Xian 710069, Peoples R China Zhejiang Univ, Ocean Coll, Zhoushan, Peoples R China China Univ Petr, Coll Geosci, State Key Lab Petr Resource & Prospecting, Beijing, Peoples R China |
| Keywords | WEST SIBERIAN BASIN TECTONIC SUBSIDENCE ANOMALOUS SUBSIDENCE CONTINENTAL-MARGIN THERMAL EVOLUTION BAIYUN SAG QIONGDONGNAN BASIN GAS HYDRATE SHEAR ZONE EAST-ASIA |
| Issue Date | Jan-2020 |
| Publisher | GEOLOGICAL JOURNAL |
| Abstract | In order to study the subsidence characteristics, temporal-spatial variation, and their controlling factors of the Pearl River Mouth Basin, we have calculated and mapped 34 wells' subsidence via 1-D backstripping method, from which 12 typical wells have been selected as a sample to compare. Three typical profiles also have been chosen to compile subsidence evolution profiles by 2-D backstripping method. All wells were synthesized as the holistic subsidence of the whole basin. The results indicate that the holistic subsidence of the basin can be divided into three episodes: The first one was Eocene with the mean total subsidence rate of 85 m/Ma; the second episode was from Oligocene to Middle Miocene with the mean total subsidence rate of 146 m/Ma; and the third episode was from Late Miocene up to present, and its mean total subsidence rate was 104 m/Ma. It is a common phenomenon that variation of subsidence and evolution existing in different units during the same period as well as different periods in the same unit. According to the distribution of subsidence rate in the plane, the basin can be divided into three zones from east to west and several belts in the same zone from north to south for each period. The variant change of subsidence evolution is related to the phase of basin evolution and structural characteristics. The holistic subsidence of the whole basin is controlled by basin dynamics, and the temporal-spatial variation of subsidence is affected by both basin dynamics and structural framework. |
| URI | http://hdl.handle.net/20.500.11897/585381 |
| ISSN | 0072-1050 |
| DOI | 10.1002/gj.3439 |
| Indexed | SCI(E) |
| Appears in Collections: | 待认领 |
