Guadalupe_Group

Guadalupe Group

Guadalupe Group

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The Guadalupe Group (Spanish: Grupo Guadalupe, K2G, Ksg) is a geological group of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The group, a sequence of shales and sandstones, is subdivided into three formations; Arenisca Dura, Plaeners and Arenisca Labor-Tierna, and dates to the Late Cretaceous period; Campanian-Maastrichtian epochs and at its type section has a thickness of 750 metres (2,460 ft).

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Etymology

The group was published in 1978 by Pérez and Salazar and named after its type locality Guadalupe Hill in the Eastern Hills of Bogotá.[1]

Description

Lithologies

The Guadalupe Group is characterised by three formations; two sandstone sequences, Arenisca Dura and Arenisca Labor-Tierna, and an intermediate shale formation; Plaeners.[1]

Stratigraphy and depositional environment

The Guadalupe Group overlies the Conejo Formation in the central part of the Altiplano Cundiboyacense and the Chipaque Formation in the eastern part and is overlain by the Guaduas Formation. Some authors define the Guadalupe Group as a formation and call the individual formations members.[2] The thickness of the Guadalupe Group in its type locality Guadalupe Hill and the El Cable Hill is 750 metres (2,460 ft).[3] The age has been estimated to be Campanian-Maastrichtian.[4] The Guadalupe Group has been deposited in a marine environment.[5]

Outcrops

Guadalupe Group
Type locality of the Guadalupe Group to the east of the Bogotá savanna

The formations of the Guadalupe Group are apart from its type locality at Guadalupe Hill, Bogotá, found in other parts of the Eastern Hills of Bogotá, the Ocetá Páramo and many other locations, such as the Piedras del Tunjo in the Eastern Ranges.[4][6]

At present, the Guadalupe Group in the anticlinals of Zipaquirá and Nemocón contains rock salt. These halite deposits are not originally deposited in the Late Cretaceous Guadalupe Group, yet are allochthonous diapirs formed when the Jurassic-Lower Cretaceous normal faults were reactivated as reverse faults during the mayor Miocene tectonic movements of the Eastern Ranges.[7] The salt had been deposited during the Early Cretaceous (Valanginian-Barremian, approximately 135 to 125 Ma),[8] intruding into the overlying formations of the Upper Cretaceous.[9]

Regional correlations

More information Ma, Age ...
Legend
  • group
  • important formation
  • fossiliferous formation
  • minor formation
  • (age in Ma)
  • proximal Llanos (Medina)[note 1]
  • distal Llanos (Saltarin 1A well)[note 2]

Panorama

The Cerro de Águilas on the Ocetá Páramo is composed of sediments belonging to the Guadalupe Group

See also

Geology of the Eastern Hills
Geology of the Ocetá Páramo
Geology of the Altiplano Cundiboyacense

Notes

  1. [N 1]
    based on Duarte et al. (2019)[46], García González et al. (2009),[47] and geological report of Villavicencio[48]
  2. [N 2]
    based on Duarte et al. (2019)[46] and the hydrocarbon potential evaluation performed by the UIS and ANH in 2009[49]

References

  1. [1]
    Montoya Arenas & Reyes Torres, 2005, p.37
  2. [2]
    Guerrero Uscátegui, 1992, p.4
  3. [3]
    Guerrero Uscátegui, 1992, p.5
  4. [4]
    Montoya Arenas & Reyes Torres, 2005, pp.38-50
  5. [5]
    Villamil, 2012, p.164
  6. [6]
    Plancha 227, 1998
  7. [7]
    Montoya Arenas & Reyes Torres, 2005, p.98
  8. [8]
    Guerrero Uscátegui, 1993, p.12
  9. [9]
    García & Jiménez, 2016, p.24
  10. [10]
    García González et al., 2009, p.27
  11. [11]
    García González et al., 2009, p.50
  12. [12]
    García González et al., 2009, p.85
  13. [13]
    Barrero et al., 2007, p.60
  14. [14]
    Barrero et al., 2007, p.58
  15. [15]
    Plancha 111, 2001, p.29
  16. [16]
    Plancha 177, 2015, p.39
  17. [17]
    Plancha 111, 2001, p.26
  18. [18]
    Plancha 111, 2001, p.24
  19. [19]
    Plancha 111, 2001, p.23
  20. [20]
    Pulido & Gómez, 2001, p.32
  21. [21]
    Pulido & Gómez, 2001, p.30
  22. [22]
    Pulido & Gómez, 2001, pp.21-26
  23. [23]
    Pulido & Gómez, 2001, p.28
  24. [24]
    Correa Martínez et al., 2019, p.49
  25. [25]
    Plancha 303, 2002, p.27
  26. [26]
    Terraza et al., 2008, p.22
  27. [27]
    Plancha 229, 2015, pp.46-55
  28. [28]
    Plancha 303, 2002, p.26
  29. [29]
    Moreno Sánchez et al., 2009, p.53
  30. [30]
    Mantilla Figueroa et al., 2015, p.43
  31. [31]
    Manosalva Sánchez et al., 2017, p.84
  32. [32]
    Plancha 303, 2002, p.24
  33. [33]
    Mantilla Figueroa et al., 2015, p.42
  34. [34]
    Arango Mejía et al., 2012, p.25
  35. [35]
    Plancha 350, 2011, p.49
  36. [36]
    Pulido & Gómez, 2001, pp.17-21
  37. [37]
    Plancha 111, 2001, p.13
  38. [38]
    Plancha 303, 2002, p.23
  39. [39]
    Plancha 348, 2015, p.38
  40. [40]
    Planchas 367-414, 2003, p.35
  41. [41]
    Toro Toro et al., 2014, p.22
  42. [42]
    Plancha 303, 2002, p.21
  43. [43]
    Bonilla et al., 2016, p.19
  44. [44]
    Gómez Tapias et al., 2015, p.209
  45. [45]
    Bonilla et al., 2016, p.22
  46. [46]
    Duarte et al., 2019
  47. [47]
    García González et al., 2009
  48. [48]
    Pulido & Gómez, 2001
  49. [49]
    García González et al., 2009, p.60

Bibliography

  • 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.
  • 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. .
  • 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.
  • Montoya Arenas, Diana María, and Germán Alfonso Reyes Torres. 2005. Geología de la Sabana de Bogotá, 1–104. INGEOMINAS.
  • 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).

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