The Kyonggi shear zone of the Central Korean Peninsula

Late orogenic imprint of the North and South China collision

J. N. Kim, Jin-Han Lee, S. T. Kwon, Y. Park, S. J. Choi, C. S. Cheong

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Abstract

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 (226 ± 1.2 Ma) of the mylonite suggests that the extensional ductile shearing occurred during the Late Triassic.

Original languageEnglish
Pages (from-to)469-478
Number of pages10
JournalJournal of Geology
Volume108
Issue number4
DOIs
Publication statusPublished - 2000 Jan 1

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shear zone
Triassic
collision
mylonite
muscovite
craton
Precambrian
Permian
uplift
analysis

ASJC Scopus subject areas

  • Geology

Cite this

The Kyonggi shear zone of the Central Korean Peninsula : Late orogenic imprint of the North and South China collision. / Kim, J. N.; Lee, Jin-Han; Kwon, S. T.; Park, Y.; Choi, S. J.; Cheong, C. S.

In: Journal of Geology, Vol. 108, No. 4, 01.01.2000, p. 469-478.

Research output: Contribution to journalArticle

Kim, J. N. ; Lee, Jin-Han ; Kwon, S. T. ; Park, Y. ; Choi, S. J. ; Cheong, C. S. / The Kyonggi shear zone of the Central Korean Peninsula : Late orogenic imprint of the North and South China collision. In: Journal of Geology. 2000 ; Vol. 108, No. 4. pp. 469-478.
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