Tilatá Formation
| Tilatá Formation | |
|---|---|
Ma | |
| Type | Geological formation |
| Sub-units | Tequendama Mb., Tibagota Mb., Guasca Mb. |
| Underlies | Subachoque Formation |
| Overlies | Guadalupe Gp. Guaduas Fm., Cacho Fm., Bogotá Fm., Regadera Fm. |
| Thickness | up to 83 m (272 ft) |
| Lithology | |
| Primary | Conglomerate, sandstone |
| Other | Shale |
| Location | |
| Coordinates | 5°05′56.9″N 73°42′49.7″W / 5.099139°N 73.713806°W |
| Region | Bogotá savanna, Altiplano Cundiboyacense Eastern Ranges, Andes |
| Country |  Colombia |
| Type section | |
| Named for | Hacienta Tilatá |
| Named by | Scheibe |
| Location | Chocontá |
| Year defined | 1933 |
| Coordinates | 5°05′56.9″N 73°42′49.7″W / 5.099139°N 73.713806°W |
| Region | Cundinamarca |
| Country | Colombia |
The Tilatá Formation (
geological formation of the Bogotá savanna, Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The formation consists of coarse to very coarse conglomerates and sandstones. The Tilatá Formation dates to the Neogene period; Early to Late Pliocene epoch (Montehermosan to Uquian in the SALMA classification, from approximately 5.3 to 2.7 Ma), and has a maximum thickness of 83 metres (272 ft). The formation underlies the Quaternary sequence of alluvial, lacustrine and fluvial sediments of Lake Humboldt
.
Etymology
The formation was first defined and named by Scheibe in 1933 after the Hacienda Tilatá in Chocontá, near the Sisga Reservoir. Hubach (1957) elevated the Pisos de Tilatá to a formation.[1]
Description
Lithologies
The Tilatá Formation consists of medium to coarse grained sandstones and conglomerates with minor shale beds.[1]
Stratigraphy and depositional environment
The Tilatá Formation is the lowermost of the lacustrine and alluvial sequence of the Bogotá savanna. It unconformably overlies the Cretaceous
Paipa–Iza volcanic complex, active between 4.7 and 3.6 Ma.[5]
Outcrops
Type locality of the Tilatá Formation on the northeasternmost Bogotá savanna
The Tilatá Formation is found at its
See also
- Geology of the Eastern Hills
Geology of the Ocetá Páramo
Geology of the Altiplano Cundiboyacense
References
Bibliography
- Guerrero Uscátegui, Alberto Lobo. 1992. Geología e Hidrogeología de Santafé de Bogotá y su Sabana, 1–20. Sociedad Colombiana de Ingenieros.
- Molnar, Peter. 2004. Late Cenozoic increase in accumulation rates of terrestrial sediment. Annual Review of Earth and Planetary Sciences 32. 67-89. .
- Monsalve, Maria Luisa; Nadia R. Rojas; Francisco A. Velandia P.; Iraida Pintor, and Lina Fernanda Martínez. 2011. Caracterización geológica del cuerpo volcánico de Iza, Boyacá - Colombia. Boletín de Geología 33. 117-130. Accessed 2017-02-25.
- Montoya Arenas, Diana María, and Germán Alfonso Reyes Torres. 2005. Geología de la Sabana de Bogotá, 1–104. INGEOMINAS.
Maps
- Renzoni, Giancarlo, and Humberto Rosas. 2009. Plancha 171 - Duitama - 1:100,000, 1. INGEOMINAS. Accessed 2017-06-06.
- Renzoni, Giancarlo; Humberto Rosas, and Fernando INGEOMINAS. Accessed 2017-06-06.
- Montoya, Diana María, and Germán Reyes. 2009. Plancha 209 - Zipaquirá - 1:100,000, 1. INGEOMINAS. Accessed 2017-06-06.
- Ulloa, Carlos E; Erasmo Rodríguez, and Jorge E. Acosta. 1998. Plancha 227 - La Mesa - 1:100,000, 1. INGEOMINAS. Accessed 2017-06-06.
- Buitrago, José Alberto; Roberto Terraza M., and Fernando INGEOMINAS. Accessed 2017-06-06.
- Acosta, Jorge E., and Carlos E. Ulloa. 1998. Plancha 246 - Fusagasugá - 1:100,000, 1. INGEOMINAS. Accessed 2017-06-06.
External links
- Gómez, J.; N.E. Montes; Á. Nivia, and H. Diederix. 2015. Plancha 5-09 del Atlas Geológico de Colombia 2015 – escala 1:500,000, 1. Servicio Geológico Colombiano. Accessed 2017-03-16.