Caimito Formation

Caimito Formation
Stratigraphic range: Late Oligocene-Early Miocene
Type	Formation
Underlies	Alajuela & Gatún Formations
Overlies	Bohío, Caraba & Gatuncillo Formations, Cretaceous basement
Lithology
Primary	Marl
Other	Siltstone, sandstone, conglomerate
Location
Coordinates	9°12′N79°48′W / 9.2°N 79.8°W / 9.2; -79.8
Approximate paleocoordinates	7°42′N77°30′W / 7.7°N 77.5°W / 7.7; -77.5
Region	Panamá Province
Country	Panama
Extent	Panama Basin
Type section
Named for	Caimito Junction of Panama Railroad
Named by	MacDonald
Year defined	1913
Caimito Formation (Panama)

The Caimito Formation (Tcm) ^[1] is a geologic formation in Panama. The marls, sandstones and conglomerates preserve bivalve and gastropod fossils dating back to the Late Oligocene to Early Miocene period. ^[2] The name Caimito was proposed by MacDonald in 1913, named after the Caimito junction in the Panama Railroad during the construction of the Panama Canal. ^[3]

See also

• List of fossiliferous stratigraphic units in Panama

References

1. Geologic Map, 1980
2. Caimito Formation at Fossilworks.org
3. Woodring, 1957, p.28

Bibliography

• Stewart, R.H.; Stewart, J.L.; Woodring, W.P. (1980), Geologic Map of the Panama Canal and Vicinity (PDF), USGS, p. 1, retrieved 2019-02-09
• Woodring, W.P (1957), Geology and Paleontology of Canal Zone and Adjoining Parts of Panama - 306A Geology and description of Tertiary mollusks (Gastropods: Trochidae to Turritellidae) (PDF), USGS, pp. 1–186, retrieved 2019-02-09