# Cacho Formation > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Cacho_Formation > Markdown URL: https://mediated.wiki/source/Cacho_Formation.md > Source: https://en.wikipedia.org/wiki/Cacho_Formation > Source revision: 1292593749 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) {{Short description|Geological formation in the Colombian Andes}} {{Infobox rockunit | name = Cacho Formation | period = Paleocene | age = [Mid-Late Paleocene](/source/Paleocene)
~{{fossil range|60|55}} | image = | imagesize = | caption = | type = [Geological formation](/source/Geological_formation) | prilithology = [Sandstone](/source/Sandstone) | otherlithology = [Shale](/source/Shale) | unitof = | subunits = | underlies = [Bogotá Formation](/source/Bogot%C3%A1_Formation) | overlies = [Guaduas Formation](/source/Guaduas_Formation) | thickness = {{convert|50|-|400|m|ft|abbr=on}} | area = | map = | map_caption = | location = | coordinates = {{coord|4|35|11.4|N|74|14|25.8|W|display=inline,title}} | region = [Bogotá savanna](/source/Bogot%C3%A1_savanna)
 [Altiplano Cundiboyacense](/source/Altiplano_Cundiboyacense)
  [Eastern Ranges](/source/Cordillera_Oriental_(Colombia))
   [Andes](/source/Andes) | country = [Colombia](/source/Colombia) | extent = | namedfor = | namedby = Julivert | year_ts = 1963 | location_ts = [Soacha](/source/Soacha) | coordinates_ts = {{coord|4|35|11.4|N|74|14|25.8|W|display=inline}} | paleocoordinates_ts = | region_ts = [Cundinamarca](/source/Cundinamarca_Department) | country_ts = [Colombia](/source/Colombia) | thickness_ts = }} The '''Cacho Formation''' ({{langx|es|Formación Cacho}}, E1C, Tpc, Tec) is a [geological formation](/source/formation_(geology)) of the [Altiplano Cundiboyacense](/source/Altiplano_Cundiboyacense), [Eastern Ranges](/source/Cordillera_Oriental_(Colombia)) of the [Colombia](/source/Colombia)n [Andes](/source/Andes). The predominantly [sandstone](/source/sandstone) formation with thin intercalated beds of [shale](/source/shale)s dates to the [Paleogene](/source/Paleogene) period; [Middle to Late Paleocene](/source/Paleocene) epochs, and has a maximum thickness of {{convert|400|m|ft}}. == Definition == The formation was first described by [Hubach](/source/Enrique_Hubach_Eggers) in 1931 and 1957 and named by Campbell in 1962 and Julivert in 1963.Montoya & Reyes, 2005, p.55Acosta & Ulloa, 2002, p.58 == Description == === Lithologies === The Cacho Formation consists of white, yellow and reddish fine to coarse cross-bedded [sandstone](/source/sandstone)s in thick banks intercalated with reddish and grey [shale](/source/shale)s. === Stratigraphy and depositional environment === The {{convert|50|to|400|m|ft}} thick Cacho Formation overlies the [Guaduas Formation](/source/Guaduas_Formation) and is overlain by the [Bogotá Formation](/source/Bogot%C3%A1_Formation).Guerrero Uscátegui, 1992, p.5 The age has been estimated to be [Late Paleocene](/source/Paleocene), based on paleoflora studied by [Thomas van der Hammen](/source/Thomas_van_der_Hammen) in 1957. The formation is laterally equivalent to the [Lower Socha](/source/Socha_Formation) and [Barco Formation](/source/Barco_Formation)s.Montoya & Reyes, 2005, p.57 == Outcrops == {{Location map | Bogotá savanna | width = 250 | lat_deg = 4.586510 | lon_deg = -74.240504 | label = | float = left | position = right | mark = Orange pog.svg | marksize = 12 | caption = Type locality of the Cacho Formation in the south of the Bogotá savanna }} The Cacho Formation is apart from its [type locality](/source/type_locality_(geology)) in [Soacha](/source/Soacha), found in the [Eastern Hills of Bogotá](/source/Eastern_Hills%2C_Bogot%C3%A1), and many other locations in the Eastern Ranges up until the south of [Boyacá](/source/Boyac%C3%A1_Department). The synclinals of the [Río Frío](/source/R%C3%ADo_Fr%C3%ADo%2C_Bogot%C3%A1), [Checua](/source/Checua)-[Lenguazaque](/source/Lenguazaque), [Sesquilé](/source/Sesquil%C3%A9), [Sisga](/source/Sisga_Reservoir), [Subachoque](/source/Subachoque), [Teusacá](/source/Teusac%C3%A1_River), [Siecha](/source/Siecha_Lakes), and the anticlinal of [Guatavita](/source/Guatavita) are composed of the Cacho Formation. {{clear}} == See also == {{Portal|Colombia|Geology}} :{{icon|FAC}} [Geology of the Eastern Hills](/source/Eastern_Hills%2C_Bogot%C3%A1) :{{icon|B}} [Geology of the Ocetá Páramo](/source/Ocet%C3%A1_P%C3%A1ramo) :{{icon|C}} [Geology of the Altiplano Cundiboyacense](/source/Altiplano_Cundiboyacense) {{clear}} == References == {{reflist|30em}} === Bibliography === * {{citation |last1=Acosta Garay |first1=Jorge E. |last2=Ulloa Melo |first2=Carlos E. |year=2002 |title=Mapa Geológico del Departamento de Cundinamarca - 1:250,000 - Memoria explicativa |url=http://nebula.wsimg.com/ca3411dab87400d504f8461f0256772a?AccessKeyId=75F883B260454DDA3D4B&disposition=0&alloworigin=1 |publisher=[INGEOMINAS](/source/INGEOMINAS) |pages=1–108 |accessdate=2017-03-29}} * {{citation |last=Guerrero Uscátegui |first=Alberto Lobo |year=1992 |title=Geología e Hidrogeología de Santafé de Bogotá y su Sabana |publisher=Sociedad Colombiana de Ingenieros |pages=1–20}} * {{citation |last1=Montoya Arenas |first1=Diana María |last2=Reyes Torres |first2=Germán Alfonso |year=2005 |title=Geología de la Sabana de Bogotá |publisher=[INGEOMINAS](/source/INGEOMINAS) |pages=1–104}} ==== Maps ==== * {{citation |last1=Fuquen M. |first1=Jaime A |last2=Osorno M |first2=José F. |year=2009 |title=Plancha 190 - Chiquinquirá - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QVEYzMnV1ekNxTDQ |publisher=[INGEOMINAS](/source/INGEOMINAS) |pages=1 |accessdate=2017-06-06}} * {{citation |last1=Montoya |first1=Diana María |last2=Reyes |first2=Germán |year=2009 |title=Plancha 209 - Zipaquirá - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QYUdHRWFiN1JrVms |publisher=[INGEOMINAS](/source/INGEOMINAS) |pages=1 |accessdate=2017-06-06}} * {{citation |last1=Terraza |first1=Roberto |last2=Moreno |first2=Giovanni |last3=Buitrago |first3=José A. |last4=Pérez |first4=Adrián |last5=Montoya |first5=Diana María |year=2010 |title=Plancha 210 - Guateque - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QS1VHUTg1MEpNcHM |publisher=[INGEOMINAS](/source/INGEOMINAS) |pages=1 |accessdate=2017-06-06}} * {{citation |last1=Buitrago |first1=José Alberto |last2=Terraza M. |first2=Roberto |author3-link=Fernando Etayo |last3=Etayo |first3=Fernando |year=1998 |title=Plancha 228 - Santafé de Bogotá Noreste - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QTlNraVVZZ2ZCY0E |publisher=[INGEOMINAS](/source/INGEOMINAS) |pages=1 |accessdate=2017-06-06}} == External links == * {{citation |last1=Gómez |first1=J. |last2=Montes |first2=N.E. |last3=Nivia |first3=Á. |last4=Diederix |first4=H. |year=2015 |title=Plancha 5-09 del Atlas Geológico de Colombia 2015 – escala 1:500,000 |url=https://www.researchgate.net/publication/309533589 |publisher=[Servicio Geológico Colombiano](/source/Servicio_Geol%C3%B3gico_Colombiano) |pages=1 |accessdate=2017-03-16}} Category:Geologic formations of Colombia Category:Paleogene Colombia Category:Paleocene Series of South America Category:Riochican Category:Itaboraian Category:Peligran Category:Sandstone formations Formations Category:Geography of Cundinamarca Department Category:Geography of Bogotá Category:Geography of Boyacá Department Category:Shale formations --- Adapted from the Wikipedia article [Cacho Formation](https://en.wikipedia.org/wiki/Cacho_Formation) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Cacho_Formation?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.