The Chilgog Formation (), also known as the Chilgok Formation, is an Lower Cretaceous geologic formation in South Korea. Formerly dated to the Berriasian to Hauterivian, later dating has established an Albian age. Dinosaur remains from this formationChilgog Formation in the Paleobiology Database are actually from the Iljig Formation, which correlates with the lower part of the Chilgog Formation.
Description The formation predominantly consists of sandstone, mudstone and conglomerate, with subordinate tuff and other volcanics. It overlies the Jinju Formation and underlies the Silla Conglomerate, which underlies the Haman Formation, respectively.
See also :ko:경상 분지 (Gyeongsang Basin) List of dinosaur-bearing rock formations List of stratigraphic units with indeterminate dinosaur fossils
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