Huachihuanhe Formation

Geological formation in China

Hanhe-Huachi Formation
Stratigraphic range: Hauterivian PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Unit of	Zhidan Group
Underlies	Luohan Formation
Overlies	Luohe Formation
Thickness	400-500 metres
Lithology
Primary	Mudstone, sandstone
Location
Region	Gansu
Country	China

The Hanhe-Huachi formation, also called Huachi-Hanhe formation is a geologic formation in China. It is Early Cretaceous, probably Hauterivian, in age.^[1] The Pterosaur Huanhepterus has been recovered from the formation.

Footnotes

^ Zhang, Mingzhen; Dai, Shuang; Zhang, Xianwen; Wang, Sen; Du, Zhen; Ma, Bo; Du, Baoxia (2020-10-07). "Conifer‐dominant palynoflora from the Lower Cretaceous in Ordos Basin, China: Biostratigraphical and palaeoclimatic implications". Geological Journal. 56 (3): 1549–1563. doi:10.1002/gj.4015. ISSN 0072-1050. S2CID 225171769.