Kirusillas Formation

Kirusillas Formation Stratigraphic range: Homerian ~426–423 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Underlies	&
Overlies	Llallagua Formation
Lithology
Primary	Black shale
Location
Coordinates	17°48′S 64°48′W / 17.8°S 64.8°W / -17.8; -64.8Coordinates: 17°48′S 64°48′W / 17.8°S 64.8°W / -17.8; -64.8
Approximate paleocoordinates	52°48′S 121°42′W / 52.8°S 121.7°W / -52.8; -121.7
Region	Cochabamba & Potosí Departments
Country	Bolivia
Extent	Cordillera Central & Oriental
Type section
Named for
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 and . 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]

Fossil content[]

The formation has provided the following fossils:

See also[]

• List of fossiliferous stratigraphic units in Bolivia
  • Lipeón Formation

References[]

Bibliography[]

• Kjellesvig-Waering, Erik N. 1973. A new Silurian Slimonia (Eurypterida) from Bolivia. Journal of Paleontology 47. 549–550.
• Veizaga Saavedra, Juan G.; Daniel G. Poiré; Gustavo D. Vergani, and José A. Salfity. 2014. Formación Los Monos (Devónico), Cuenca de Tarija: Aproximación Geoquímica y Mineralógica del potencial como Shale Gas y Shale Oil, 93–115. IX Congreso de Exploración y Desarrollo de Hidrocarburos. Accessed 2019-03-03.

Further reading[]

• C. J. Fischer. 1969. Deux bellerophontacées nouveaux de Bolive. Bulletin de Societé géologique, France 7:605-608
• Plotnick, R. E. 1999. Habitat of Llandoverian-Lochkovian eurypterids, 106–136. in A. J. Boucot, J. D. Lawson (eds.), Paleocommunities - a case study from the Silurian and Lower Devonian.