| 词条 | Capotes Formation |
| 释义 |
| name = Capotes Formation | period = Albian | age = Early Albian ~{{fossil range|112|108}} | image = | imagesize = | caption = | type = Geological formation | prilithology = Calcareous black shale | otherlithology = Gypsum | unitof = Villeta Group | subunits = | underlies = Hiló Formation | overlies = El Peñón Fm., Socotá Fm. | thickness = {{convert|550|m|ft|abbr=on}} | area = | map = Blakey 105Ma - COL.jpg | map_caption = Paleogeography of Northern South America 105 Ma, {{small|by Ron Blakey}} | location | coordinates = {{coord|5|15|13|N|74|20|28|W|display=inline,title}} | region = Eastern Ranges, Andes | country = {{COL}} | extent = | namedfor = Hacienda Capotes, Viotá | namedby = Cáceres & Etayo | year_ts = 1969 | location_ts = Bituima-Guayabal | coordinates_ts = {{coord|5|15|13|N|74|20|28|W|display=inline}} | paleocoordinates_ts = | region_ts = Cundinamarca | country_ts = {{COL}} | thickness_ts = {{convert|550|m|ft|abbr=on}} }} The Capotes Formation ({{lang-es|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 {{convert|550|m|ft}}. EtymologyThe formation was defined in 1969 by Cáceres and Etayo as a member of the Socotá Formation.[1][2] The name is derived from Hacienda Capotes, southeast of Viotá.[2] DescriptionLithologiesThe Capotes Formation has a thickness at its type section of approximately {{convert|550|m|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.[3][4] Stratigraphy and depositional environmentThe 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.[5] The formation has been deposited in a quiet enclosed shallow marine environment.[3] In terms of sequence stratigraphy, the Albian of current central Colombia experienced a transgressive to highstand sequence.[6] Outcrops{{Location map | Altiplano Cundiboyacense| width = 250 | lat_deg = 5.253664 | lon_deg = -74.341091 | label = | float = left | position = right | mark = Green pog.svg | marksize = 12 | caption = Type locality of the Capotes Formation to the west of the Altiplano Cundiboyacense }} The Capotes Formation is apart from its type locality along the road between Bituima and Guayabal,[3] also found north and southeast of Viotá,[7] and north and east of La Mesa.[8] {{clearleft}}Regional correlations{{Cretaceous stratigraphy of the central Colombian Eastern Ranges}}See also{{portal|Colombia|Geology|Prehistory of South America|Cretaceous}}{{icon|FAC}} Geology of the Eastern Hills {{icon|B}} Geology of the Ocetá Páramo {{icon|C}} Geology of the Altiplano Cundiboyacense{{clearboth}} References1. ^Acosta & Ulloa, 2002, p.41 2. ^Vargas & Barrantas, 2013, p.8 3. ^1 2 3 Acosta & Ulloa, 2002, p.42 4. ^Moreno Bedmar et al., 2015 5. ^Acosta & Ulloa, 2001, p.91 6. ^Villamil, 2012, p.169 7. ^Plancha 246, 1998 8. ^Plancha 227, 1998 Bibliography
Maps
External links
8 : Geologic formations of Colombia|Cretaceous Colombia|Lower Cretaceous Series of South America|Albian Stage|Shale formations|Shallow marine deposits|Altiplano Cundiboyacense|Geography of Cundinamarca Department |
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