Djadochta Formation

Djadochta Formation
Stratigraphic range: Campanian, ~75–71 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Bayn Dzak (Flaming Cliffs), the type locality of the Djadochta Formation
Type	Geological formation
Unit of	Shamo Group
Sub-units	Bayn Dzak Member, Tugrugyin Member
Underlies	Barun Goyot Formation
Overlies	Alagteeg Formation
Area	Nemegt Basin, Ulan Nur Basin
Thickness	over 90 m (300 ft)
Lithology
Primary	Sandstone
Other	Mudstone
Type section
Named for	Shabarakh Usu (Bayn Dzak)
Named by	Berkey & Morris
Location	Flaming Cliffs
Year defined	1927
Coordinates	44°08′19″N 103°43′40″E / 44.13861°N 103.72778°E / 44.13861; 103.72778
Approximate paleocoordinates	30°42′N 9°12′E / 30.7°N 9.2°E / 30.7; 9.2
Region	Ömnögov
Country	Mongolia
Thickness at type section	about 90 m (300 ft)

The Djadochta formation (sometimes transcribed and also known as Djadokhta, Djadokata, or Dzhadokhtskaya) is a highly fossiliferous geological formation in Central Asia, Gobi Desert, dating from the Late Cretaceous period, about 75 million to 71 million years ago. The type locality is the Bayn Dzak locality, famously known as the Flaming Cliffs. Reptile (including dinosaur) and mammal remains are among the fossils recovered from the formation.