Nakdong Formation
Geologic formation in South Korea From Wikipedia, the free encyclopedia
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.
| 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 | 35.6°N 128.2°E |
| Approximate paleocoordinates | 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) | |
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