Chilgog Formation
The Chilgog Formation, also known as the Chilgok Formation is an Early Cretaceous geologic formation in South Korea.[1] Formerly dated to the Berriasian to Hauterivian, later dating has established an Albian age.[2] Dinosaur remains, possibly of sauropods,[3] are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[4]
| Chilgog Formation Stratigraphic range: Albian 108.7–106.0 Ma | |
|---|---|
| Type | Geological formation |
| Unit of | Hayang Group |
| Underlies | Silla Conglomerate |
| Overlies | Jinju Formation |
| Thickness | Up to 650 m (2,130 ft) 295 m (968 ft) in the western Daegu area |
| Lithology | |
| Primary | Sandstone, mudstone, conglomerate |
| Other | Tuff |
| Location | |
| Coordinates | 36.0°N 128.5°E |
| Approximate paleocoordinates | 40.9°N 128.3°E |
| Region | Gyeongsangbuk-do |
| Country |  South Korea |
| Extent | Gyeongsang Basin |
  Chilgog Formation (South Korea) | |
Description
The formation predominantly consists of sandstone, mudstone and conglomerate, with subordinate tuff and other volcanics.[5] It overlies the Jinju Formation and underlies the Silla Conglomerate, which underlies the Haman Formation, respectively.
See also
- List of dinosaur-bearing rock formations
References
- Chilgog Formation in the Paleobiology Database
- Lee et al., 2018
- Kim, 1981
- Weishampel et al., 2004, pp.517-607
- Choo et al., 2002
Bibliography
- Lee, Tae-Ho; Kye-Hun Park, and Keewook Yi. 2018. Nature and evolution of the Cretaceous basins in the eastern margin of Eurasia: A case study of the Gyeongsang Basin, SE Korea. Journal of Asian Earth Sciences 166. 19–31. doi:10.1016/j.jseaes.2018.07.004
- Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2
- Choo, Chang Oh; Young Sik Shin, and In Seok Koh. 2002. Mineralogical evidence for red coloration of sandstones at the Chilgok Formation of the Cretaceous Hayang Group, Southeastern Korea. Geosciences Journal 6. 141–148. doi:10.1007/BF03028285 ISSN 1226-4806
- Kim, H.M. 1981. Cretaceous dinosaur bones excavated from two localities in Korea. Journal of the Geological Society of Korea 17. 297.
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