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The Kyonggi Shear Zone of the Central Korean Peninsula: Late Orogenic Imprint of the North and South China Collision
The Journal of Geology ( IF 1.8 ) Pub Date : 2000-07-01 , DOI: 10.1086/314412 Kim , Ree , Kwon , Park , Choi , Cheong
The Journal of Geology ( IF 1.8 ) Pub Date : 2000-07-01 , DOI: 10.1086/314412 Kim , Ree , Kwon , Park , Choi , Cheong
The crustal‐scale Kyonggi shear zone of central Korea has been identified as a major boundary between the Precambrian Kyonggi massif in the south and the Imjingang belt in the north. The latter is an eastward extension of the Qinling‐Dabie‐Sulu collisional belt of China. Field observations and microstructural analysis indicate that the extensional shear zone evolved from a deep crustal ductile regime to a shallow crustal brittle regime, associated with a rapid uplift of the Kyonggi massif following the Late Permian–Early Triassic collision between the Sino‐Korean and Yangtze cratons. A Rb‐Sr muscovite age (
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$$226\pm 1.2$$
\end{document} Ma) of the mylonite suggests that the extensional ductile shearing occurred during the Late Triassic.
更新日期：2000-07-01
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