- Source: Capotes Formation
The Capotes Formation (Spanish: Formación Capotes, Kic) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The formation consists of calcareous black shales containing gypsum and ammonites and dates to the Early Cretaceous period; Early Albian epoch and has an approximate thickness at its type section of 550 metres (1,800 ft).
Etymology
The formation was defined in 1969 by Cáceres and Etayo as a member of the Socotá Formation. The name is derived from Hacienda Capotes, southeast of Viotá.
Description
= Lithologies
=The Capotes Formation has a thickness at its type section of approximately 550 metres (1,800 ft), and is characterised by a sequence of organic rich calcareous shales with gypsum. Fossils of Douvilleiceras solitae, Neodeshayesites columbianus and Paracrioceras sp. have been found in the Capotes Formation.
= Stratigraphy and depositional environment
=The Capotes Formation, part of the Villeta Group, overlies the Socotá and El Peñón Formations, and is overlain by the Hiló Formation. The age has been estimated to be Early Albian. Stratigraphically, the formation is time equivalent with the Simití Formation. The formation has been deposited in a quiet enclosed shallow marine environment. In terms of sequence stratigraphy, the Albian of current central Colombia experienced a transgressive to highstand sequence.
Outcrops
The Capotes Formation is apart from its type locality along the road between Bituima and Guayabal, also found north and southeast of Viotá, and north and east of La Mesa.
Regional correlations
See also
Geology of the Eastern Hills
Geology of the Ocetá Páramo
Geology of the Altiplano Cundiboyacense
References
= Bibliography
=Acosta Garay, Jorge E.; Ulloa Melo, Carlos E. (2002), Mapa Geológico del Departamento de Cundinamarca - 1:250,000 - Memoria explicativa, INGEOMINAS, pp. 1–108, retrieved 2017-06-05
Acosta Garay, Jorge; Ulloa Melo, Carlos E (2001), Geología de la Plancha 208 Villeta - 1:100,000 (PDF), INGEOMINAS, pp. 1–84, archived from the original (PDF) on 2017-03-24, retrieved 2017-06-05 Archived 2017-03-24 at the Wayback Machine
Moreno Bedmar, J.A; Martínez, R.; Rodríguez, J.V.; Bermúdez, Hermann Durán (2015), Algunos ammonites del Cretácico de la Cordillera Oriental de Colombia, XV Congreso Colombiano de Geología, 2015, pp. _, retrieved 2017-06-05
Vargas Quintero, Jhonn; Barrantas, Daniel Mauricio (2013), Efectos del tránsito en la estabilidad de taludes, Universidad La Javeriana, pp. 1–185
Villamil, Tomas (2012), Chronology Relative Sea Level History and a New Sequence Stratigraphic Model for Basinal Cretaceous Facies of Colombia, Society for Sedimentary Geology (SEPM), pp. 161–216
Maps
Ulloa, Carlos; Acosta, Jorge (1998), Plancha 208 - Villeta - 1:100,000, INGEOMINAS, p. 1, retrieved 2017-06-06
Ulloa, Carlos E; Rodríguez, Erasmo; Acosta, Jorge E. (1998), Plancha 227 - La Mesa - 1:100,000, INGEOMINAS, p. 1, retrieved 2017-06-06
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 2017-06-05