| Usme Formation | |
|---|---|
| Stratigraphic range: Late Eocene-Early Oligocene ~40–30 Ma PreꞒ Ꞓ O S D C P T J K Pg N | |
| Type | Geological formation |
| Underlies | Tilatá Formation |
| Overlies | Regadera Formation |
| Thickness | up to 300 m (980 ft) |
| Lithology | |
| Primary | Shale, sandstone, conglomerate |
| Location | |
| Coordinates | 4°21′40.3″N 74°07′50″W / 4.361194°N 74.13056°W / 4.361194; -74.13056 |
| Region | Bogotá savanna, Altiplano Cundiboyacense Eastern Ranges, Andes |
| Country |  Colombia |
| Type section | |
| Named for | Usme |
| Named by | Hubach |
| Location | Usme, Bogotá |
| Year defined | 1957 |
| Coordinates | 4°21′40.3″N 74°07′50″W / 4.361194°N 74.13056°W / 4.361194; -74.13056 |
| Region | Cundinamarca |
| Country | Colombia |
 Paleogeography of Northern South America 35 Ma, by Ron Blakey | |
The Usme Formation (Spanish: Formación Usme, Tsu, Teu) is a geological formation of the Bogotá savanna, Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The formation consists of a lower part with predominantly shales with intercalated sandstone beds and an upper sequence with sandstones and conglomerates. The Usme Formation dates to the Neogene and Paleogene periods; Late Eocene to Early Oligocene epochs, and has a maximum thickness of 300 metres (980 ft).
Etymology
The formation was defined by Hubach in 1957 and named after the locality of Usme, Bogotá.
Description
Lithologies
The Usme Formation is subdivided into a lower sequence of shales with intercalated sandstones and an upper part of sandstones and conglomerates.
Stratigraphy and depositional environment
The Usme Formation unconformably overlies the Regadera Formation and is overlain by the Tilatá Formation. The age has been estimated, based on palynological data, to be Late Eocene to Early Oligocene. The depositional environment has been interpreted as marine with the upper part deposited in a deltaic setting.
Outcrops
class=notpageimage| Type locality of the Usme Formation to the south of the Bogotá savanna
The Usme Formation is found in its type locality in the synclinal of Usme, the valley of the Tunjuelo River.
Regional correlations
- Legend
- group
- important formation
- fossiliferous formation
- minor formation
- (age in Ma)
- proximal Llanos (Medina)
- distal Llanos (Saltarin 1A well)
See also
Notes and references
Notes
- based on Duarte et al. (2019), García González et al. (2009), and geological report of Villavicencio
- based on Duarte et al. (2019) and the hydrocarbon potential evaluation performed by the UIS and ANH in 2009
References
- ^ Montoya & Reyes, 2005, p.65
- Guerrero Uscátegui, 1992, p.6
- Bayona et al., 2010, p.7
- ^ García González et al., 2009, p.27
- ^ García González et al., 2009, p.50
- ^ García González et al., 2009, p.85
- ^ Barrero et al., 2007, p.60
- ^ Barrero et al., 2007, p.58
- Plancha 111, 2001, p.29
- ^ Plancha 177, 2015, p.39
- ^ Plancha 111, 2001, p.26
- Plancha 111, 2001, p.24
- Plancha 111, 2001, p.23
- ^ Pulido & Gómez, 2001, p.32
- Pulido & Gómez, 2001, p.30
- ^ Pulido & Gómez, 2001, pp.21-26
- Pulido & Gómez, 2001, p.28
- Correa Martínez et al., 2019, p.49
- Plancha 303, 2002, p.27
- Terraza et al., 2008, p.22
- Plancha 229, 2015, pp.46-55
- Plancha 303, 2002, p.26
- Moreno Sánchez et al., 2009, p.53
- Mantilla Figueroa et al., 2015, p.43
- Manosalva Sánchez et al., 2017, p.84
- ^ Plancha 303, 2002, p.24
- ^ Mantilla Figueroa et al., 2015, p.42
- Arango Mejía et al., 2012, p.25
- Plancha 350, 2011, p.49
- Pulido & Gómez, 2001, pp.17-21
- Plancha 111, 2001, p.13
- Plancha 303, 2002, p.23
- Plancha 348, 2015, p.38
- Planchas 367-414, 2003, p.35
- Toro Toro et al., 2014, p.22
- Plancha 303, 2002, p.21
- ^ Bonilla et al., 2016, p.19
- Gómez Tapias et al., 2015, p.209
- ^ Bonilla et al., 2016, p.22
- ^ Duarte et al., 2019
- García González et al., 2009
- Pulido & Gómez, 2001
- García González et al., 2009, p.60
Bibliography
- Bayona, Germán; Montenegro, Omar; Cardona, Agustín; Jaramillo, Carlos; Lamus, Felipe; Morón, Sara; Quiroz, Luiz; Ruíz, María C.; Valencia and Mauricio Parra, Victor (2010), "Estratigrafía, procedencia, subsidencia y exhumación de las unidades paleógenas en el Sinclinal de Usme, sur de la zona axial de la Cordillera Oriental - Stratigraphy, provenance, subsidence and exhumation of the Paleogene succession in the Usme Syncline, southern axial zone of the Eastern Cordillera" (PDF), Geología Colombiana, 35: 5–35, retrieved 2017-03-16
- Guerrero Uscátegui, Alberto Lobo (1992), Geología e Hidrogeología de Santafé de Bogotá y su Sabana, Sociedad Colombiana de Ingenieros, pp. 1–20
- Montoya Arenas, Diana María; Reyes Torres, Germán Alfonso (2005), Geología de la Sabana de Bogotá, INGEOMINAS, pp. 1–104
Maps
- Acosta, Jorge E.; Ulloa, Carlos E. (1998), Plancha 246 - Fusagasugá - 1:100,000, INGEOMINAS, p. 1, retrieved 2017-06-06
External links
- Gómez, J.; Montes, N.E.; Nivia, Á.; Diederix, H. (2015), Plancha 5-09 del Atlas Geológico de Colombia 2015 – escala 1:500,000, Servicio Geológico Colombiano, p. 1, retrieved 2017-03-16
- Geologic formations of Colombia
- Paleogene Colombia
- Eocene Series of South America
- Oligocene Series of South America
- Tinguirirican
- Divisaderan
- Lutetian Stage
- Priabonian Stage
- Rupelian Stage
- Sandstone formations
- Shale formations
- Deltaic deposits
- Altiplano Cundiboyacense
- Geography of Cundinamarca Department
- Geography of Bogotá