Chilgog Formation

Chilgog Formation
Stratigraphic range: Albian 108.7–106.0 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
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 / 36.0; 128.5
Approximate paleocoordinates	40°54′N 128°18′E / 40.9°N 128.3°E / 40.9; 128.3
Region	Gyeongsangbuk-do
Country	South Korea
Extent	Gyeongsang Basin
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.^[1] Formerly dated to the Berriasian to Hauterivian, later dating has established an Albian age.^[2] Dinosaur remains, possibly of sauropods,^[3] are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.^[4]