Llallagua Formation
Llallagua Formation Stratigraphic range: Rhuddanian-Homerian ~ | |
---|---|
Type | Geological formation |
Underlies | Kirusillas Formation |
Lithology | |
Primary | Sandstone |
Other | Shale |
Location | |
Coordinates | 17°48′S 64°48′W / 17.8°S 64.8°WCoordinates: 17°48′S 64°48′W / 17.8°S 64.8°W |
Approximate paleocoordinates | 46°30′S 127°54′W / 46.5°S 127.9°W |
Region | Potosí Department |
Country | ![]() |
Extent | Cordillera Oriental |
Type section | |
Named for | Llallagua |
![]() ![]() 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[]
The formation has provided the following fossils:
- Atrypa reticularis
- Chonetes sp.
- Dalmanites sp.
- Plectodonta sp.
- Protochonetes sp.
- Syntrophia sp.
See also[]
References[]
- ^ Llallagua Formation at Fossilworks.org
Further reading[]
- 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
Categories:
- Geologic formations of Bolivia
- Silurian System of South America
- Silurian Bolivia
- Rhuddanian
- Aeronian
- Telychian
- Sheinwoodian
- Homerian
- Silurian southern paleotemperate deposits
- Paleontology in Bolivia
- Geology of Cochabamba Department
- Aymaran languages