Earth:Chipaque Formation

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Chipaque Formation
Stratigraphic range: Cenomanian-Turonian
~97–90 Ma
TypeGeological formation
Unit ofVilleta Group
UnderliesGuadalupe Gp
 Arenisca Dura Fm
OverliesUne Formation
Thicknessup to 1,700 metres (5,580 ft)
Lithology
PrimaryOrganic shale
OtherSandstone, limestone, siltstone
Location
Coordinates [ ⚑ ] : 4°27′07″N 74°03′20″W / 4.45194°N 74.05556°W / 4.45194; -74.05556
RegionAltiplano Cundiboyacense
Eastern Ranges, Andes
Country Colombia
Type section
Named forChipaque
Named byHubach
LocationChipaque
Year defined1957
Coordinates [ ⚑ ] 4°27′07″N 74°03′20″W / 4.45194°N 74.05556°W / 4.45194; -74.05556
RegionCundinamarca, Boyacá
Country Colombia
Thickness at type section1,027 metres (3,370 ft)
Blakey 090Ma - COL.jpg
Paleogeography of Northern South America
90 Ma, by Ron Blakey

The Chipaque Formation (Spanish: Formación Chipaque, K2cp, Kc) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The formation is also described as Gachetá Formation, named after Gachetá, in the area of the Llanos foothills of the Eastern Ranges. The predominantly organic shale formation dates to the Late Cretaceous period; Cenomanian-Turonian epochs and has a maximum thickness of 1,700 metres (5,600 ft). The formation, rich in TOC, is an important oil and gas generating unit for the giant oilfields Cupiagua and Cusiana of the Eastern Ranges as well as in the Llanos Orientales.

Etymology

The formation was named in 1931 as group and as formation in 1957 by Hubach after Chipaque, Cundinamarca.[1]

Description

Lithologies

The Chipaque Formation with a maximum thickness of 1,700 metres (5,600 ft), is characterised by a sequence of pyritic organic shales, limestones and siltstones, with sandstone banks intercalated in the formation.[2] The Chipaque Formation contains a high density of fauna.[1] The formation is rich in TOC and one of the principal source rocks for oil and gas generation in the foothills of the Eastern Ranges,[3] sourcing fields as Cusiana, Cupiagua and many others.[4] Chipaque also sourced the oilfields of the Llanos Orientales.[5] In the Chitasugá-1 well, drilled between 1980 and 1981, from the sandstones of the Chipaque Formation half a million m³ of water were produced.[6] The sandstone beds are reservoir rocks for oil in the Eastern Ranges.[3]

Stratigraphy and depositional environment

The Chipaque Formation overlies the Une Formation and is overlain by the Guadalupe Group. The core of the Zipaquirá Anticline consists of the Chipaque Formation.[7] The age has been estimated to be Cenomanian-Turonian.[1] Stratigraphically, the formation is time equivalent with the Simijaca Formation.[8] The formation has been deposited in an open to shallow marine platform setting.[9] The deposition is represented by a maximum flooding surface and anoxic conditions.[10]

Outcrops

Lua error in Module:Location_map at line 522: Unable to find the specified location map definition: "Module:Location map/data/Bogotá savanna" does not exist. The Chipaque Formation is apart from its type locality, found in the Eastern Hills of Bogotá, the Ocetá Páramo and many other locations in the Eastern Ranges. The anticlinals of the Río Blanco-Machetá, San José and Sopó-Sesquilé are composed of the Chipaque Formation.[1]

Regional correlations

Gallery

See also

  • Geology of the Eastern Hills
  • Geology of the Ocetá Páramo
  • Geology of the Altiplano Cundiboyacense
  • Petroleum industry in Colombia


Notes and references

Notes

References

  1. 1.0 1.1 1.2 1.3 Montoya Arenas & Reyes Torres, 2005, p.26
  2. Lobo Guerrero, 1992, p.4
  3. 3.0 3.1 García González et al., 2009, p.49
  4. Cortés et al., 2009, p.4
  5. García González et al., 2009, p.58
  6. Lobo Guerrero, 1993, p.20
  7. García & Jiménez, 2016, p.24
  8. Montoya Arenas & Reyes Torres, 2005, p.22
  9. García González et al., 2009, p.209
  10. Villamil, 2012, p.164

Bibliography

  • García, Helbert, and Giovanny Jiménez. 2016. Structural analysis of the Zipaquirá Anticline (Eastern Cordillera, Colombia). Boletín de Ciencias de la Tierra, Universidad Nacional de Colombia 39. 21–32.
  • Schütz, Christian. 2012. Combined structural and Petroleum Systems Modeling in the Eastern Cordillera Basin, Colombia (MSc. thesis), 1–161. Rheinisch-Westfälische Technische Hochschule Aachen & Instituto Colombiano del Petróleo.
  • Villamil, Tomas. 2012. Chronology Relative Sea Level History and a New Sequence Stratigraphic Model for Basinal Cretaceous Facies of Colombia, 161–216. Society for Sedimentary Geology (SEPM).
  • Cortés, Martín; Diego García; Germán Bayona, and Yolima Blanco. 2009. Timing of oil generation in the Eastern flank of the Eastern Cordillera of Colombia based on kinematic models; implications in the Llanos Foothills and Foreland charge, 1–8. Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP).
  • García González, Mario; Ricardo Mier Umaña; Luis Enrique Cruz Guevara, and Mauricio Vásquez. 2009. Informe Ejecutivo - evaluación del potencial hidrocarburífero de las cuencas colombianas, 1–219. Universidad Industrial de Santander.
  • Montoya Arenas, Diana María, and Germán Alfonso Reyes Torres. 2005. Geología de la Sabana de Bogotá, 1–104. INGEOMINAS.
  • Guerrero Uscátegui, Alberto Lobo. 1993. Informe sobre la Cuenca Petrolífera de la Sabana de Bogotá, Colombia, 1–29.
  • Guerrero Uscátegui, Alberto Lobo. 1992. Geología e Hidrogeología de Santafé de Bogotá y su Sabana, 1–20. Sociedad Colombiana de Ingenieros.

Reports

  • Reyes, Germán; Diana Montoya; Roberto Terraza; Jaime Fuquen; Marcela Mayorga; Tatiana Gaona, and Fernando Etayo. 2008. Geología del cinturón esmeraldífero oriental Planchas 210, 228, 229, 1−126. INGEOMINAS.
  • Acosta Garay, Jorge, and Carlos E. Ulloa Melo. 2001. Geología de la Plancha 227 - La Mesa - 1:100,000, 1–80. INGEOMINAS.
  • Terraza, Roberto; Diana Montoya; Germán Reyes; Giovanni Moreno; Jaime Fúquen; Eliana Torres Jaimes; Myriam López Cardona; Álvaro Nivia Guevara, and Fernando Etayo Serna. 2013. Geología de la Plancha 229 - Gachalá - 1:100,000, 1–296. Servicio Geológico Colombiano. Accessed 2018-06-01.
  • Patiño, Alejandro; Jaime Fuquen; Julián Ramos; Andrea Pedraza; Leonardo Ceballos; Lyda Pinzón; Yadira Jerónimo; Leidy Álvarez, and Andrea Torres. 2011. Cartografía geológica de la Plancha 247 - Cáqueza - 1:100,000, 1–100. INGEOMINAS. Accessed 2017-08-04.

Maps

External links