Balumtun Sandstone

The Balumtun Sandstone is a geologic formation in Chiapas, Mexico. The formation is up to 760 metres thick, and consists of gray sandstone, that were deposited during the Upper Aquitanian stage of the Early Miocene.^[1]

Balumtun Sandstone
Stratigraphic range: Aquitanian ~23–22.5 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Formation
Unit of	Río Concepción Group
Underlies	Tulijá Formation
Overlies	Mazantic Shale
Thickness	760 metres
Lithology
Primary	Sandstone
Other	Conglomerate
Location
Coordinates	17.1°N 92.7°W / 17.1; -92.7
Approximate paleocoordinates	17.7°N 89.0°W / 17.7; -89.0
Region	Chiapas
Country	Mexico
Type section
Named for	Balumtun

See also

• List of fossiliferous stratigraphic units in Mexico
• Mexican amber