Structural evolution of the northern East China Sea shelf basin interpreted from cross-section restoration

Cukur, Deniz, Horozal, Senay, Lee, Gwang H., Kim, Dae C., Han, Hyun C. and Kang, Moo H. (2011) Structural evolution of the northern East China Sea shelf basin interpreted from cross-section restoration Marine Geophysical Research, 32 (3). pp. 363-381. DOI 10.1007/s11001-011-9114-4.

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Abstract

The northern East China Sea Shelf Basin consists of three depressions (the Domi, Jeju, and Socotra Depressions), separated by basement highs or rises. Reconstruction of depth-converted seismic reflection profiles from these depressions reveals that the northern East China Sea Shelf Basin experienced two phases of rifting, followed by regional subsidence. Initial rifting in the Late Cretaceous was driven by the NW-SE crustal stretching of the Eurasian plate, caused by the subduction of the Pacific plate beneath the plate margin. Major extension (~15 km) took place during the early phase of basin formation. The initial rifting was terminated by regional uplift in the Late Eocene-Early Oligocene, which was probably due to reorganization of plate boundaries. Rifting resumed in the Early Oligocene; the magnitude of extension was mild (<1 km) during this period. A second phase of uplift in the Early Miocene terminated the rifting, marking the transition to the postrift phase of regional subsidence. Up to 2,600 m of sediments and basement rock were removed by erosion during and after the second phase of uplift. An inversion in the Late Miocene interrupted the postrift subsidence, resulting in an extensive thrust-fold belt in the eastern part of the area. Subsequent erosion removed about 900 m of sediments. The regional subsidence has dominated the area since the Late Miocene.

Document Type: Article
Keywords: Geodynamics; Geophysics; East China Sea Shelf Basin, Reconstruction, Rifting, Extension
Research affiliation: OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-GDY Marine Geodynamics
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-JRG-B4 Submarine Hazards
Refereed: Yes
DOI etc.: 10.1007/s11001-011-9114-4
ISSN: 0025-3235
Date Deposited: 20 Apr 2011 12:46
Last Modified: 22 Jun 2017 11:54
URI: http://eprints.uni-kiel.de/id/eprint/11808

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