Pircancha Formation

TypeGeological formation

Thickness1,800 m (5,900 ft)

PrimaryMudstone

OtherShale, sandstone, pyrite

Pircancha Formation
Stratigraphic range: Floian-Dapingian ~478–466 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Thickness	1,800 m (5,900 ft)
Lithology
Primary	Mudstone
Other	Shale, sandstone, pyrite
Location
Coordinates	21°00′S 65°00′W / 21.0°S 65.0°W / -21.0; -65.0
Approximate paleocoordinates	45°18′S 129°06′W / 45.3°S 129.1°W / -45.3; -129.1
Region	Tarija Department
Country	Bolivia
Pircancha Formation (Bolivia)

The Pircancha Formation is a Floian to Dapingian geologic formation of southern Bolivia. The green mudstones, shales and sandstones were deposited in a shallow to open marine environment.^[1][2] The fossil Pircanchaspis rinconensis is named after the formation.