| Jindong Formation | |
|---|---|
| Stratigraphic range: Cenomanian ~99.9 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ | |
 | |
| Type | Geological formation |
| Unit of | Hayang Group |
| Underlies | Yucheon Group (volcanics) |
| Overlies | Haman Formation |
| Lithology | |
| Primary | Mudstone, siltstone |
| Other | Sandstone, shale |
| Location | |
| Coordinates | 35°24′N 128°24′E / 35.4°N 128.4°E / 35.4; 128.4 |
| Approximate paleocoordinates | 44°42′N 122°54′E / 44.7°N 122.9°E / 44.7; 122.9 |
| Region | Gyeongsangnam-do |
| Country |  South Korea |
| Extent | Gyeongsang Basin |
  Jindong Formation (South Korea) | |
The Jindong Formation (Korean: 진동층; Hanja: 鎭東層; RR: Jindong-cheung) is a geological formation located in South Korea. It dates to the Cenomanian stage of the Late Cretaceous, with a maximum depositional age of 99.9 ± 0.7 Ma.
Lithology
The formation is a thick layering of fine-grained, altered volcaniclastic sediments. Most of these sediments are ash-rich mudstone, siltstone, and very fine sandstone. There is also coarser sandstone, conglomerate, carbonates, and ash tuff.
Paleontology
The area has many dinosaur and bird tracks. It contains Hadrosauropodus kyoungsookimi, the first trackway of a quadrupedal ornithopod discovered in Korea.
See also
References
- 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.
- Houck, Karen J.; Lockley, Martin G. (February 2006), "Life in an active volcanic arc: Petrology and sedimentology of dinosaur track beds in the Jindong Formation (Cretaceous), Gyeongsang Basin, South Korea" (PDF), Cretaceous Research, 27 (1): 102–122, Bibcode:2006CrRes..27..102H, doi:10.1016/j.cretres.2005.10.004
- Lockley, Martin G.; Houck, Karen J.; Yang, Seong-Young; Matsukawa, Masaki; Lim, Seong-Kyu (February 2006), "Dinosaur-dominated footprint assemblages from the Cretaceous Jindong Formation, Hallyo Haesang National Park area, Goseong County, South Korea: Evidence and implications" (PDF), Cretaceous Research, 27 (1): 70–101, Bibcode:2006CrRes..27...70L, doi:10.1016/j.cretres.2005.10.010
- Lim, Jong-Deock; Lockley, Martin G.; Kong, Dal-Yong (March 19, 2012), "The Trackway of a Quadrupedal Ornithopod from the Jindong Formation (Cretaceous) of Korea", Ichnos, 19 (1–2), Taylor & Francis Group: 101–104, Bibcode:2012Ichno..19..101L, doi:10.1080/10420940.2012.664059, S2CID 129058417
- Yoon, Han Sang; Lee, Yuong-Nam; Jung, Seung-Ho; Kong, Dal-Yong; Kim, Su-Hwan; Son, Minyoung (2021). "A juvenile ornithopod-dominated tracksite from the Lower Cretaceous Haman Formation, South Korea". Cretaceous Research. 125: 104877. doi:10.1016/j.cretres.2021.104877.