Devonian Strata in Imjingang Belt of the Central Korean Peninsula: Imjin System

Abstract

The 'Imjin System' (or Rimjin System) was established in 1962 as a new stratigraphic unit

Deformation microstructures and seismic anisotropy of Yeoncheon amphibolites in the Imjingang Belt, South Korea

“…Yeoncheon Group is located in the southern part of the Imjingang Belt (Cho et al, 1995;Ree et al, 1996). The Yeoncheon Group is bordered by Proterozoic schists of the Gyeonggi Massif to the south along the Jeongok fault, and by the Dongducheon fault to the east (Chwae et al, 1996;Kee et al, 2008) (Fig.…”

“…1a). The Imjingang Belt has been proposed as a possible extension of the Dabie-Sulu Collision Belt in China (Cho et al, 2007;Cho et al, 1995;Chough et al, 2000;Ree et al, 1996). However, various tectonic models for the continental collision between the North and South China Cratons have been proposed, and there has been debate as to whether the Dabie-Sulu Collision Belt extends into the Korean Peninsula, and if so, where the location is (e.g., Chang and Zhao, 2012;Cho et al, 2017;Ishiwatari and Tsujimori, 2001;Kee et al, 2019;Kwon et al, 2009;Oh, 2006).…”

“…Recent studies have identified Hongseong-Imjingang Bel-tas a Paleozoic tectonic province, spanning from the Imjingang Belt to the western part of the Gyeonggi Massif (Kee et al, 2019;Kim et al, 2018b;. Nevertheless, there is no doubt that the Permo-Triassic continental collision event related to the formation of Pangea was recorded in the Imjingang Belt (Cho et al, 2007;Cho et al, 1995;Lee et al, 2019;Ree et al, 1996). Abundant amphibolite bodies were observed in the southernmost part of the Imjingang Belt, representing amphibolite facies metamorphism during the Permo-Triassic continental collision event (Cho et al, 1995;Lee et al, 2019;Ree et al, 1996).…”

Geochronology, magma source, and geochemistry of igneous rocks in the northern Taebaeksan metallogenic region, South Korea

“…The major tectonic evolution of the Korean Peninsula was initiated in the Triassic when the South China Block collided with the Sino‐Korean Block (Cho et al, 1995; Ree et al, 1996). In the Jurassic, orthogonal subduction of the Pacific Plate caused compressional deformation with an extensive emplacement of granite batholiths (Chough et al, 2018).…”

Pressure–temperature–time–deformation (P–T–t–d) path for Devonian forearc deposits in the Imjingang Belt, South Korea: Implications for Permian–Triassic collisional orogenesis on the eastern margin of Eurasia

“…The Imjingang Belt occurs on the northwestern margin of the Gyeonggi Massif and consists of metasedimentary and metavolcanic rocks (Yeoncheon Complex) of inferred Meso(? )–Neoproterozoic to Devonian age (Cho, Kim, & Ahn, 2007; Kee, 2008; Kim et al, 2013), as well as low‐grade metasediments of the Imjin Group (in North Korea), which contain Middle–Late Devonian fossils (Choi et al, 2015; Kim et al, 2012). The Ogcheon Metamorphic Belt occurs on the southern margin of the Gyeonggi Massif and is composed of Neoproterozoic to late Palaeozoic metasedimentary and metavolcanic rocks (Cho, Cheong, Ernst, Yi, & Kim, 2013; Cho & Kim, 2005; Lim, Chun, Kim, Kim, & Cho, 2005).…”