Ding Weiwei

Second Institute of Oceanography

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Zhaocai Wu

Ministry of Natural Resources

Hanlin Chen

Zhejiang University

LI Ming-bi

Second Institute of Oceanography

Jinyao Gao

Ministry of Natural Resources

Fang Yin-xia

Yong Tang

Shanghai Ocean University

Yinxia Fang

Second Institute of Oceanography

Min He

China Coal Technology and Engineering Group Corp (China)

Yang Chunguo

Second Institute of Oceanography

Aiguo Ruan

Ministry of Natural Resources

Cooperative Institutions

Second Institute of Oceanography

Ministry of Natural Resources

Chinese Academy of Sciences

Institute of Oceanology

Zhejiang University

Shanghai Jiao Tong University

South China Sea Institute Of Oceanology

Shandong University of Science and Technology

Federal Institute for Geosciences and Natural Resources

Tongji University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Moho Depth of The South China Sea Basin from Three-dimensional gravity inversion with control points and its characteristic

EGU General Assembly Conference Abstracts (2017)

Zhaocai Wu Jinyao Gao Ding Weiwei

Source

Cite

Citations (0)

Crustal Structures Inferred from Gravity Modeling and Stretching Model in the South of South China Sea

Zihua Cheng Ding Weiwei Dong Chong-zhi Fang Yin-xia Tang Yong

Source

Cite

Citations (3)

Characteristics of Lower Slope Basin in Northern Continental Margin of South China Sea

Earth Science(Journal of China University of Geosciences) (2011)

Yong Tang LI Ming-bi Fang Yin-xia Min He Zhaocai Wu

The Cenozoic stratigraphic interpretation of lower continental slope in the northern South China Sea is studied and compared with Baiyun sag,to understand the sedimentary characteristics and stratigraphic distribution of deep water basin for environmental impact of construction,based on the seismic profiles acquired by SO49 and 973 cruises.The Cenozoic sediments of lower continental slope in southern Baiyun sag can be divided into eight stratas,namely,Pliocene-Quaternary,Late Miocene,Middle Miocene,Early Miocene,Late Oligocene,Late Eocene-Early Oligocene,Middle Eocene,Paleogene-Early Eocene.The tectonic evolution of lower continental slope depressions can be divided into following stages:rifting,rifting-depression transitional and depression stages,while their depositional environments change from river to shallow marine and abyssa1,which results in different topography in different stages.The topographic evolvement in the study area includes three stages,that is,Neocene to present,Late Oligocene,Early Oligocene and Paleogene.

Paleogene

Continental Margin

Source

Cite

Citations (0)

THE MOHO DEPTH OF THE SOUTH CHINA SEA BASIN FROM THREE‐DIMENSIONAL GRAVITY INVERSION WITH CONSTRAINT POINTS AND ITS CHARACTERISTICS

Chinese Journal of Geophysics (2017)

Zhaocai Wu Jinyao Gao Ding Weiwei SHEN Zhong‐Yan Tao Zhang

Abstract We calculate the gravity anomalies due to lateral changes in bathymetry from an independent topography compilation, and those due to changes in sediment thickness and density. To obtain the Moho depth and the crustal thickness of the South China Sea basin, the 3‐D gravity inversion method is employed, based on an “initial model of fluctuating interface” constrained by the control points from seismic data and sonobuoys. And then, the gravity data is corrected for the lithospheric thermal gravity anomaly within continental margin due to lithosphere thinning. Over most of the South China Sea basin, the Moho depth ranges between 8∼14 km, the crustal thickness is 3∼9 km. The NNE trending fossil spreading center of the East and the Southwest Basin extend to 112°E, the Moho depth is more than 12 km, the crustal thickness is above 6 km in the spreading center. However, the crust of the spreading center at the northwest basin is not obviously thickened. In the northern margin of the southwest basin, south of Zhongsha block, there is a crustal thinning belt, nearly EW trending, where the crustal thickness is about 9∼10 km. The 14 km isoline of the Moho depth and the 9 km isoline of the crustal thickness are very close to the Continent‐Ocean Boundary.

Thinning

Seafloor Spreading

10.1002/cjg2.30053

Cite

Citations (5)

Deformation characters and its tectonic evolution of the Southwest Taiwan Basin

Journal of Zhejiang University(Sciences Edition) (2004)

Ding Weiwei

Through the interpretation of the seismic profile across the NE South China Sea region, combined with the analysis of free-air gravity anomaly and magnetic anomaly, it was found that the Southwest Taiwan Basin's structure is in NW-NEE direction and it has a special double-layer sedimentary style. It's a Cenozoic rifty basin which has a close relationship with the evolution of the South China Sea. From the late Cretaceous the basin begun its rifting action. During the Paleogene, extensional structures, including normal faults and half-grabens controlled by them, developed and the basin was covered by the Paleocene, Eocene and Oligocene deposit. At the end of Oligocene the basin was influenced by contractive action and developed some thrust faults and inversion tectonics. The evolution character is Extension first, contraction. After Miocene the basin began its thermal subsidence.

Pull apart basin

Thermal subsidence

Tectonic subsidence

Source

Cite

Citations (16)

Crustal Structure across the Northwestern Margin of South China Sea: Evidence for Magma‐poor Rifting from a Wide‐angle Seismic Profile

Acta Geologica Sinica - English Edition (2012)

Ding Weiwei Michael Schnabel Dieter Franke Aiguo Ruan Zhenli Wu

Abstract: We present results from a 484 km wide‐angle seismic profile acquired in the northwest part of the South China Sea (SCS) during OBS2006 cruise. The line that runs along a previously acquired multi‐channel seismic line (SO49–18) crosses the continental slope of the northern margin, the Northwest Subbasin (NWSB) of the South China Sea, the Zhongsha Massif and partly the oceanic basin of the South China Sea. Seismic sections recorded on 13 ocean‐bottom seismometers were used to identify refracted phases from the crustal layer and also reflected phases from the crust‐mantle boundary (Moho). Inversion of the traveltimes using a simple start model reveals crustal images in the study area. The velocity model shows that crustal thickness below the continental slope is between 14 and 23 km. The continental part of the line is characterized by gentle landward mantle uplift and an abrupt oceanward one. The velocities in the lower crust do not exceed 6.9 km/s. With the new data we can exclude a high‐velocity lower crustal body (velocities above 7.0 km/s) at the location of the line. We conclude that this part of the South China Sea margin developed by a magma‐poor rifting. Both, the NWSB and the Southwest Sub‐basin (SWSB) reveal velocities typical for oceanic crust with crustal thickness between 5 and 7 km. The Zhongsha Massif in between is extremely stretched with only 6–10 km continental crust left. Crustal velocity is below 6.5 km/s; possibly indicating the absence of the lower crust. Multi‐channel seismic profile shows that the Yitongansha Uplift in the slope area and the Zhongsha Massif are only mildly deformed. We considered them as rigid continent blocks which acted as rift shoulders of the main rift subsequently resulting in the formation of the Northwest Sub‐basin. The extension was mainly accommodated by a ductile lower crustal flows, which might have been extremely attenuated and flow into the oceanic basin during the spreading stage. We compared the crustal structures along the northern margin and found an east‐west thicken trend of the crust below the continent slope. This might be contributed by the east‐west sea‐floor spreading along the continental margin.

Massif

Continental Margin

Seismometer

Underplating

10.1111/j.1755-6724.2012.00711.x

Cite

Citations (54)

Characteristics of helium isotopes in natural gas and its tectonic implication in Bohai Bay Basin

Chinese Journal of Oceanology and Limnology (2006)

Ding Weiwei Jinxin Dai Shufeng Yang Hanlin Chen

10.1007/bf02842624

Cite

Citations (4)

Cenozoic Tectono-Sedimentary Evolution in the Middle Part of Northern Continental Shelf-Slope Region, South China Sea

Gaoxiao dizhi xuebao (2009)

Ding Weiwei LI Ming-bi He Ming Yong Tang Yinxia Fang

The middle part of the northern continental shelf-slope region lies in the south of the Pearl River Basin. As an important structure unit of the northern continental margin of the South China Sea, it has experienced multiphase tectonic events and bears a thinned crust, upon which Cenozoic rifted-depressions with great hydrocarbon potential are developed. Several seismic profiles crossing the study area are introduced in this article. Based on the interpretations and balanced cross-section restorations of these profiles, combined with structural geology, a Cenozoic tectono-sedimentary model is established. The results show that three stages can be proposed for this region: the rift stage from Paleocene to Eocene, the rift-depression stage from Oligocene to the Early Miocene, and the depression stage after the Middle Miocene. The sedimentation environment transformed from the fluvial and lake facies to the shallow sea facies, and finally to the deep sea facies. The existence of NW-SE direction mantle flow under the continental crust in the north continental margin of South China Sea made the extension activities migrate from north to south. Results also show that the depressions (such as the Baiyun Sag) on the continental slope are featured by ductile deformation. It appears to be caused by the ductile thinning and necking of the crust in response to hot lithopheric stretching, together with mantle upwelling.

Continental Margin

Source

Cite

Citations (6)

GEOLOGICAL CHARACTERISTICS AND TECTONIC MECHANISM OF TAIWAN ACCRETIONARY PRISM: EVIDENCES FROM A MULTI-CHANNEL SEISMIC PROFILE OF A "973" SURVEY

Redai haiyang xuebao (2005)

Ding Weiwei Xiaogan Cheng Hanlin Chen Nengyou Wu

Taiwan accretionary prism lies in the conjunction area of the Eurasian Plate,the Philippine Sea Plate and the South China Sea,and is characterized by the young age of the arc-continent collision.The structural geometry,kinematics and density structure of the Taiwan accretionary prism were studied based on the interpretation of a multi-channel seismic profile obtained during a 973 survey.Geological evidence showed that the Taiwan accretionary prism consists of three distinct structural domains: the collision prism caused by the arc-continent collision,the subduction prism caused by the inner-ocean subduction,and the tectonic wedge between the Luzon arc and the prism.In the studied area,the three domains are the Gaoping Slope,the Hengchun Ridge and the west part of Luzon Through,respectively.Since the middle Miocene,the South China Sea had subducted beneath the Philippine Sea Plate along the Manila Trench,and the subduction prism came into being.The Philippine Sea Plate also moved northwestward and collided obliquely with the Asian continent since 6.5Ma B.P..The arc-continent collision made the collision prism west of the subduction prism,together forming the Taiwan accretionary prism.With the continuous process of the arc-continent collision,a tectonic wedging took place along the rear of Taiwan accretionary prism and caused the uplift and deformation of the strata in the west part of the North Luzon Through.Compared with the onshore geology,the offshore Taiwan accectionary prism has the similar and relevant structure characteristics.They have the same tectonic mechanism but different deformation history,i.e.the collision began in the north of Taiwan,and then propagated southward.The onshore Taiwan has much longer deformation history.

Accretionary wedge

Prism

Collision zone

Island arc

Source

Cite

Citations (2)

Natural gas accumulation and geochemical characteristics in Yinggehai-Qiongdongnan Basin, South China Sea

Petroleum Exploration and Development (2005)

Ding Weiwei

Natural gas field

Source

Cite

Citations (4)