Possible eastward extension of Chinese collision belt in South Korea: The Imjingang belt

Abstract

Research Article| December 01, 1996 Possible eastward extension of Chinese collision belt in South Korea: The Imjingang belt Jin-Han Ree; Jin-Han Ree 1Department of Earth and Environmental Sciences, Korea University, Seoul 136-701, South Korea Search for other works by this author on: GSW Google Scholar Moonsup Cho; Moonsup Cho 2Department of Geological Sciences, Seoul National University, Seoul 151-742, South Korea Search for other works by this author on: GSW Google Scholar Sung-Tack Kwon; Sung-Tack Kwon 3Department of Geology, Yonsei University, Seoul 120-749, South Korea Search for other works by this author on: GSW Google Scholar Eizo Nakamura Eizo Nakamura 4Pheasant Memorial Laboratory, Institute for Study of the Earth's Interior, Okayama University at Misasa, Tottori 682-01, Japan Search for other works by this author on: GSW Google Scholar Geology (1996) 24 (12): 1071–1074. https://doi.org/10.1130/0091-7613(1996)024<1071:PEEOCC>2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Jin-Han Ree, Moonsup Cho, Sung-Tack Kwon, Eizo Nakamura; Possible eastward extension of Chinese collision belt in South Korea: The Imjingang belt. Geology 1996;; 24 (12): 1071–1074. doi: https://doi.org/10.1130/0091-7613(1996)024<1071:PEEOCC>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Structural, petrological, and geochronological data from the middle Korean peninsula indicate that the Qinling-Dabie-Sulu collisional belt of east-central China crosses the Yellow Sea and extends into the Imjingang belt. The Yeoncheon complex, first identified as the western Imjingang belt, comprises primarily north-dipping metamorphic sequences: (1) the northern Jingok unit, consisting of Barrovian-type metapelites, and (2) the southern Samgot unit, consisting of calc-silicate and amphibolitic rocks. South-vergent structures with reverse-sense shearing are dominant in the Jingok unit, whereas late normal-sense shearing is pervasive in the Samgot unit and the deformed granitoid to the south. These structural patterns are interpreted to correspond to extensional deformation associated with uplift following compression in a collisional belt. Pressure-temperature (P-T) estimates from the amphibolites suggest a high-P amphibolite-facies metamorphism (8–13 kbar and 630–790 °C), possibly evolving from eclogite facies conditions along a clockwise P-T path. Sm-Nd and Rb-Sr geochronological data suggest that the amphibolites emplaced in Late Proterozoic time were metamorphosed during Permian-Triassic time. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.