Kirusillas Formation

Kirusillas Formation
Stratigraphic range: Homerian
~426–423 Ma
TypeGeological formation
UnderliesPampa & Guayabillas Formations
OverliesLlallagua Formation
Lithology
PrimaryBlack shale
Location
Coordinates17°48′S 64°48′W / 17.8°S 64.8°W / -17.8; -64.8
Approximate paleocoordinates52°48′S 121°42′W / 52.8°S 121.7°W / -52.8; -121.7
RegionCochabamba & Potosí Departments
Country Bolivia
ExtentCordillera Central & Oriental
Type section
Named forKirusillas
Kirusillas Formation is located in Bolivia
Kirusillas Formation
Kirusillas Formation
Kirusillas Formation (Bolivia)

The Kirusillas Formation is a Homerian geologic formation of central Bolivia. The formation comprises black shales, overlies the Llallagua Formation and is overlain by the Pampa and Guayabillas Formations. The Kirusillas Formation is laterally equivalent to the Lipeón Formation.[1][2][3] The formation is a potential source rock for shale oil and shale gas.[4]

  1. ^ Veizaga Saavedra et al., 2014, p.96
  2. ^ Pojo at Fossilworks.org
  3. ^ Hacienda de Tapacari, 10 km from Huari, 120 km S of Oruro at Fossilworks.org
  4. ^ Veizaga Saavedra et al., 2014, p.99