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Llallagua Formation

Coordinates: 17°48′S 64°48′W / 17.8°S 64.8°W / -17.8; -64.8
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Llallagua Formation
Stratigraphic range: Rhuddanian-Homerian
~443–428 Ma
TypeGeological formation
UnderliesKirusillas Formation
Lithology
PrimarySandstone
OtherShale
Location
Coordinates17°48′S 64°48′W / 17.8°S 64.8°W / -17.8; -64.8
Approximate paleocoordinates46°30′S 127°54′W / 46.5°S 127.9°W / -46.5; -127.9
RegionPotosí Department
Country Bolivia
ExtentCordillera Oriental
Type section
Named forLlallagua
Llallagua Formation is located in Bolivia
Llallagua Formation
Llallagua Formation (Bolivia)

The Llallagua Formation is a Rhuddanian to Homerian geologic formation of western Bolivia. The formation comprises siliciclastic sediments. The fossil fauna suggests a warm water, nearshore current was active allowing northern hemisphere benthos to exist in the formation.[1]

Fossil content

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The formation has provided the following fossils:

See also

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References

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Further reading

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  • G. Laubacher, A. J. Boucot, and J. Gray. 1982. Additions to Silurian stratigraphy, lithofacies, biogeography and paleontology of Bolivia and southern Peru. Journal of Paleontology 56(5):1138-1170