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]
| Guasasa Formation Stratigraphic range: Tithonian-Early Valanginian ~151–141 Ma | |
|---|---|
| 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 |
| Approximate paleocoordinates | 5.9°N 53.0°W |
| Region | Pinar del Río Province |
| Country |  Cuba |
| Extent | Sierra de los Órganos |
| Type section | |
| Named for | Guasasa |
  Guasasa Formation (Cuba) | |
References
- Guasasa Formation at Fossilworks.org
- 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.
- 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
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