Guasasa Formation

The Guasasa Formation is a geologic formation in Cuba. It is Tithonian to Early Valanginian in age and contains fossils of ammonites.[1] It primarily consists of limestone.[2][3]

Guasasa Formation Stratigraphic range: Tithonian-Early Valanginian ~151–141 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Sub-units	San Vicente, El Americano, Tumbadero & Tumbitas Members
Overlies	Jagua Formation
Lithology
Primary	Limestone
Other	Shale, dolomite, chert
Location
Coordinates	22.7°N 83.8°W / 22.7; -83.8
Approximate paleocoordinates	5.9°N 53.0°W / 5.9; -53.0
Region	Pinar del Río Province
Country	Cuba
Extent	Sierra de los Órganos
Type section
Named for	Guasasa
Guasasa Formation (Cuba)

See also

• List of fossiliferous stratigraphic units in Cuba

References

1. Guasasa Formation at Fossilworks.org
2. Pszczółkowski, Andrzej; Myczyński, Ryszard (March 2010). "Tithonian–Early Valanginian evolution of deposition along the proto-Caribbean margin of North America recorded in Guaniguanico successions (western Cuba)". Journal of South American Earth Sciences. 29 (2): 225–253. doi:10.1016/j.jsames.2009.07.004. ISSN 0895-9811.
3. López-Martínez, Rafael; Barragán, Ricardo; Reháková, Daniela; Cobiella-Reguera, Jorge Luis (2013-06-01). "Calpionellid distribution and microfacies across the Jurassic/ Cretaceous boundary in western Cuba (Sierra de los Órganos)". Geologica Carpathica. 64 (3): 195–208. doi:10.2478/geoca-2013-0014. ISSN 1336-8052.

Further reading

• Bermúdez, Pedro J. 1961. Las formaciones geológicas de Cuba. Geología Cubana 1. 1–180. Accessed 2019-02-06.
• R. Myczynski. 1989. Ammonite biostratigraphy of the Tithonian of Western Cuba. Annales Societatis Geologorum Poloniae 59:43-125