| Jinju Formation | |
|---|---|
| Stratigraphic range: Albian ~ | |
| Type | Geological formation |
| Unit of | Shindong Group |
| Underlies | Chilgog Formation, Iljig Formation |
| Overlies | Hasandong Formation |
| Thickness | 1,000–1,800 m (3,300–5,900 ft) |
| Lithology | |
| Primary | Shale |
| Other | Sandstone |
| Location | |
| Coordinates | 35°06′N 128°06′E / 35.1°N 128.1°E |
| Approximate paleocoordinates | 44°18′N 122°42′E / 44.3°N 122.7°E |
| Region | Gyeongsang Province |
| Country |  South Korea |
| Extent | Gyeongsang Basin(ko:경상 분지) |
| Type section | |
| Named for | Jinju |
| Named by | Chang, 1975[1] |
  Jinju Formation (South Korea) | |
The Jinju Formation (Korean: 진주층; Hanja: 晋州層; RR: Jinju-cheung) is an Early Cretaceous geologic formation in South Korea.[2] Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[3] The depositional age of this formation spans from approximately 112.4 ± 1.3 to 106.5 million years ago (early Albian) based on detrital zircon U-Pb dating.[4] It predominantly consists of black shale, with sandstone packets, deposited in a fluvial-lacustrine setting.
A diverse arthropod fauna, including freshwater arthropods, spiders, and insects, is known from the formation. Other notable fossils known from the formation include several freshwater fishes, ostracods, and plants. This formation has also "attracted global ichnological attention" for the variety of important ichnofossils.[5] Columnar and rod-shaped stromatolites have also been found here.[6]
- ^ Chang, Ki-Hong (1975). "Cretaceous Stratigraphy of Southeast Korea". Journal of the Geological Society of Korea. 11 (1): 1–23.
- ^ Jinju Formation in the Paleobiology Database
- ^ Weishampel, David B.; Barrett, Paul M.; Coria, Rodolfo A.; Le Loueff, Jean; Xu, Xing; Zhao, Xijin; Sahni, Ashok; Gomani, Emily M.P.; Noto, Christopher N. (2004). "Dinosaur distribution". In Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (eds.). The Dinosauria (Second ed.). Berkeley: University of California Press. pp. 517–607. ISBN 978-0-520-24209-8.
- ^ Chae, Yong-Un; Lim, Jong Deock; Kim, Cheong-Bin; Kim, Kyung Soo; Ha, Sujin; Lim, Hyoun Soo (2020). "Detrital zircon U-Pb ages of the uppermost Jinju Formation in the Natural Monument No. 534 'Tracksite of Pterosaurs, Birds, and Dinosaurs in Hotandong, Jinju', Korea" (PDF). Journal of the Korean Earth Science Society. 41 (4): 367−380. doi:10.5467/JKESS.2020.41.4.367. S2CID 225332234.
- ^ Cite error: The named reference
Kimetal2019was invoked but never defined (see the help page). - ^ Paik, I.S. (2005). "The oldest record of microbial-caddisfly bioherms from the Early Cretaceous Jinju Formation, Korea: occurrence and palaeoenvironmental implications" (PDF). Palaeogeography, Palaeoclimatology, Palaeoecology. 218 (3−4): 301−315. Bibcode:2005PPP...218..301P. doi:10.1016/j.palaeo.2004.12.020.