The Pyeongan Supergroup (upper Paleozoic–Lower Triassic) in the Okcheon Belt, Korea: A review of stratigraphy and detrital zircon provenance, and its implications for the tectonic setting of the eastern Sino-Korean Block

Upper Permian paleoclimate of the Sino-Korean block: an example from the Gohan Formation (Korea) in the eastern margin and a synthesis

“…The abundance of kaolinite (+ pyrophyllite) in the early stage of the Gohan Formation deposition indicates that the upland region had received sustained high precipitation over a prolonged period in stable landscape conditions. The source tectonic setting of the Gohan Formation was interpreted as the active continental margin where arc-related magmatism occurred (Yi et al, 2012;Kim and Lee, 2018;Kim et al, 2019Kim et al, , 2020, and thus the elevation of the source terrain was likely enough to have had much precipitation on highlands of the coastal mountain range. Considering the paleolatitude of the Taebaeksan Basin during the Permian, the precipitation of the eastern margin of the SKB may also have been influenced by the Intertropical Convergence Zone, although seasonal.…”

“…Geological, paleomagnetic, and paleobiogeographic evidence of the late Paleozoic (Doh and Piper, 1994;Kim et al, 2001;Zhai et al, 2007;Lee et al, 2010;Li et al, 2016;Kim and Lee 2018;Kim et al, 2020) suggests that the Korean Peninsula and North China craton formed a single tectonic block, the Sino-Korean block (SKB; also called the North China block), which is one of the major crustal blocks in East Asia. In the late Paleozoic, the SKB was one of the Tethyan microcontinents, located in tropical latitudes west of the Panthalassic Ocean and at the eastern end of the Tethys (Paleo-Tethys) Ocean (Fig.…”

“…Given that there are significant regional variations in the Permian drying trends within North China, the Upper Permian climate record reported in this study can provide interesting new information. The physiographic setting of the North China craton may not have affected sedimentation and paleoclimate in the eastern margin of the SKB; it was interpreted that the sediment routing system of the Korean Peninsula was different from that of the North China craton (Kim and Lee, 2018;Kim et al, 2019Kim et al, , 2020. Based on the geochemistry and clay mineralogy, we investigate paleoclimatic trends recorded in the Gohan Formation and discuss the factors controlling the paleoclimate of the SKB during Middle-Late Permian time before the extreme climatic change at the end of the Permian.…”

Petrography of quartz sandstone in Nanggulan formation at Sermo area, Kulon Progo Regency, Daerah Istimewa Yogyakarta, Indonesia: implications on provenance and basin origin

“…Kim, M G and Lee Y I [20] mentions this formation as shallow marine sedimentstransition with sandstone provenance that characterizes the interior of the craton, so this formation is located on continental bedrock [21]. The Nanggulan Formation also has a narrow distribution (approximately 0.25 x 1 km 2 ) with a thickness of up to 300 m [22].…”