Structural evolution of the southwestern margin of the Ulleung Basin, East Sea (Japan Sea) and tectonic implications SCIE SCOPUS

Cited 46 time in WEB OF SCIENCE Cited 47 time in Scopus
Title
Structural evolution of the southwestern margin of the Ulleung Basin, East Sea (Japan Sea) and tectonic implications
Author(s)
Lee, Gwang H.; Yoon, Youngho; Nam, Byong H.; Lim, Heonhak; Kim, Young-Seog; Kim, Han J.; Lee, Keumsuk
KIOST Author(s)
Kim, Han Joon(김한준)
Publication Year
2011-04-20
Abstract
Structural mapping and restoration of depth-converted seismic profiles from the southwestern Ulleung Basin in the East Sea (Japan Sea) back-arc basin reveal the structural evolution of the area since the Middle Miocene. The back-arc closure began in the earliest Middle Miocene (ca. 15 Ma) and caused compressional deformation that has propagated southwestward from the Dolgorae to the Gorae structures and further to the unnamed inversion structure immediately adjacent to SE Korea. The accelerated convergence of the young (<20 Ma) and hot Shikoku Basin lithosphere into SW Japan at the culmination (15 Ma) of the regional plate reorganization induced flat subduction along the Nankai Trough. Strong interplate coupling due to the flat subduction probably led to tectonic switching from back-arc opening to back-arc closure in the Middle Miocene. The NE-SW trending Dolgorae structures indicate NW-SE or N-S compression, orthogonal to the direction of convergence along SW Japan, whereas the younger, NW-SE trending Gorae V structure indicates NE-SW or E-W compression. We propose that this apparently abrupt change in stress regime is due to the eastward-movement of the Amur plate that began in the Pliocene. (C) 2011 Elsevier B.V. All rights reserved.
ISSN
0040-1951
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3873
DOI
10.1016/j.tecto.2011.01.015
Bibliographic Citation
TECTONOPHYSICS, v.502, no.3-4, pp.293 - 307, 2011
Publisher
ELSEVIER
Subject
FLAT SUBDUCTION; PLATE-TECTONICS; ISLAND-ARC; SW JAPAN; DEFORMATION; GEODYNAMICS; CONSTRAINTS; KINEMATICS; HISTORY; STRESS
Keywords
Ulleung Basin; East Sea; Japan Sea; Amur plate; Cross-section restoration
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER
Related Researcher
Research Interests

Marine Geophysics,Marine Active Fault Study,Exploration Seismology,해양지구물리,해저단층연구,탄성파탐사

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