Nakdong Formation
| Nakdong Formation | |
|---|---|
| Stratigraphic range: Hauterivian-Aptian ~[1] | |
| Type | Geological formation |
| Unit of | Shindong Group |
| Underlies | Hasandong Formation |
| Overlies | Unconformity |
| Thickness | ~2,100 meters |
| Lithology | |
| Primary | Conglomerate, Shale, sandstone |
| Location | |
| Coordinates | 35°36′N 128°12′E / 35.6°N 128.2°E |
| Approximate paleocoordinates | 41°06′N 133°48′E / 41.1°N 133.8°E |
| Region | Gyeongsang Province |
| Country |  South Korea |
| Type section | |
| Named for | Nakdong, Sangju |
| Named by | Tateiwa, 1929[2] |
  Nakdong Formation (South Korea) | |
The Nakdong Formation (Also known as the Nagdong Formation) (Korean: 낙동층; Hanja: 洛東層; RR: Nakdong-cheung) is an Early Cretaceous (Hauterivian to Aptian) geologic formation in South Korea. It has been dated from the Hauteravian to the Aptian, between 127 Ma and 118.0 ± 2.6 Ma. Plant fossils from the Nakdong Formation show 'mixed type' of the Tetori-Type and the Ryoseki-Type flora existed in this formation. Sauropod fossils have been reported from the formation,[3] although none have yet been referred to a specific genus.
See also
Footnotes
- ^ Lee, Tae-Ho; Park, Kye-Hun; Yi, Keewook (October 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. Bibcode:2018JAESc.166...19L. doi:10.1016/j.jseaes.2018.07.004. S2CID 135061525.
- ^ Tateiwa, Iwao (1929). "Geologic Atlas of Korea, No. 10, Gyeongju, Yeongcheon, Daegu, Waegwan Sheets". Geological Survey of Chosen (Korea).
- ^ Kim, Haang-Mook (1983). "Cretaceous dinosaurs from Korea". Journal of the Geological Society of Korea. 19: 115–126.
References
- Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.