Jindong Formation

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.^[1]