La Ciénega Formation, Bolivia Explained

La Ciénega Formation
Type:	Geological formation
Period:	Katian
Age:	Sandbian-Katian ~
Prilithology:	Sandstone
Otherlithology:	Shale
Region:	Chuquisaca Department
Coordinates:	-19°N -65°W
Paleocoordinates:	-44.6°N -129.3°W
Extent:	Cordillera Oriental

La Ciénega Formation is a Sandbian to Katian geologic formation of south-central Bolivia. The formation comprises silty, clayey, micaceous, fine-grained sandstones with thin intercalations of grey-green to light grey shales.^[1]

Fossil content

The formation has provided the following fossils:

• Dinorthis sp.
• Lingula sp.
• Lingulepis sp.
• Orbiculoidea sp.
• Orthoceras sp.

See also

• List of fossiliferous stratigraphic units in Bolivia

Further reading

• R. Suárez Soruco. 1976. El sistema ordovícico en Bolivia. Revista Tecnica YPF Bolivia 5(2):111-123

Notes and References

1. http://www.fossilworks.org/cgi-bin/bridge.pl?a=collectionSearch&collection_no=8855 La Ciénega anticline, Bolivia