Earth:Chilgog Formation
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| 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°00′N 128°30′E / 36.0°N 128.5°E |
| Paleocoordinates | [ ⚑ ] 40°54′N 128°18′E / 40.9°N 128.3°E |
| Region | Gyeongsangbuk-do |
| Country | South Korea |
| Extent | Gyeongsang Basin |
| Type section | |
| Named for | Chilgok |
| Named by | Tateiwa, 1929[1] |
  Chilgog Formation (South Korea) | |
The Chilgog Formation (Korean: 칠곡층; Hanja: 漆谷層; RR: Chilgok-cheung), also known as the Chilgok Formation, is an Early Cretaceous geologic formation in South Korea. Formerly dated to the Berriasian to Hauterivian, later dating has established an Albian age.[2] Dinosaur remains from this formation[3] are actually from the Iljig Formation, which correlates with the lower part of the Chilgog Formation.[4][5]
Description
The formation predominantly consists of sandstone, mudstone and conglomerate, with subordinate tuff and other volcanics.[6] It overlies the Jinju Formation and underlies the Silla Conglomerate, which underlies the Haman Formation, respectively.
See also
- :ko:경상 분지 (Gyeongsang Basin)
- List of dinosaur-bearing rock formations
- List of stratigraphic units with indeterminate dinosaur fossils
References
- ↑ Tateiwa, Iwao (1929). "Geologic Atlas of Korea, No. 10, Gyeongju, Yeongcheon, Daegu, Waegwan Sheets". Geological Survey of Chosen (Korea).
- ↑ Lee, Tae-Ho; Park, Kye-Hun; Yi, Keewook (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, Bibcode: 2018JAESc.166...19L, https://linkinghub.elsevier.com/retrieve/pii/S1367912018302669
- ↑ Chilgog Formation in the Paleobiology Database
- ↑ Kim, Haang-Mook (1983). "Cretaceous dinosaurs from Korea.". Journal of the Geological Society of Korea 19: 115–126.
- ↑ Kim, Haang Mook; Gishlick, Alan D.; Tsuihiji, Takanobu (April 2005). "The first non-avian maniraptoran skeletal remains from the Lower Cretaceous of Korea". Cretaceous Research 26 (2): 299–306. doi:10.1016/j.cretres.2005.01.001. Bibcode: 2005CrRes..26..299K. http://doc.rero.ch/record/15392/files/PAL_E2743.pdf.
- ↑ Choo, Chang Oh; Shin, Young Sik; Koh, In Seok (2002), "Mineralogical evidence for red coloration of sandstones at the Chilgok Formation of the Cretaceous Hayang Group, Southeastern Korea", Geosciences Journal 6 (2): 141–148, doi:10.1007/BF03028285, ISSN 1226-4806, Bibcode: 2002GescJ...6..141C, http://link.springer.com/10.1007/BF03028285
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