Jimol Formation
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| Jimol Formation | |
|---|---|
| Stratigraphic range: Burdigalian (Santacrucian) ~ | |
| Type | Geological formation |
| Unit of | Cocinetas Basin |
| Underlies | Castilletes Formation |
| Overlies | Uitpa Formation |
| Thickness | up to 203 m (666 ft) |
| Lithology | |
| Primary | Sandstone |
| Other | Siltstone, mudstone |
| Location | |
| Coordinates | 11°58′00″N 71°22′43″W / 11.96667°N 71.37861°W |
| Region | La Guajira Caribbean region |
| Country |  Colombia |
| Type section | |
| Named for | Cerro Jimol |
| Named by | Renz |
| Location | Uribia |
| Year defined | 1960 |
| Coordinates | 11°58′00″N 71°22′43″W / 11.96667°N 71.37861°W |
| Region | La Guajira |
| Country | Colombia |
  Type locality of the formation in La Guajira | |
The Jimol Formation (Spanish: Formación Jimol, N1j) is a fossiliferous geological formation of the Cocinetas Basin in the northernmost department of La Guajira. The formation consists of calcareous lithic and fossiliferous sandstones, siltstones and mudstones. The Jimol Formation dates to the Neogene period; Burdigalian stage, Santacrucian in the SALMA classification, and has a maximum thickness of 203 metres (666 ft).
Etymology
[edit]The formation was defined by Renz in 1960 and named after Cerro Jimol.[1]
Description
[edit]Lithologies
[edit]The Jimol Formation consists of calcareous lithic and fossiliferous sandstones, siltstones and mudstones.[2]
Stratigraphy and depositional environment
[edit]The Jimol Formation overlies the Uitpa Formation and is overlain by the Castilletes Formation. The age has been estimated to be Early Miocene (17.9 to 16.7 Ma), corresponding to the Santacrucian in the SALMA classification. The invertebrate fauna of the Jimol Formation is similar to the fauna found in the latest Early Miocene Cantaure Formation of Venezuela and the Culebra Formation of Panama.[3] The Jimol Formation was deposited in a beach to shallow marine environment,[4] inner shelf depth (less than 50 metres' [160 ft] water depth). This unit is correlated with the upper Agua Clara and lower Cerro Pelao Formations of the Venezuelan Falcón Basin.[5]
Petroleum geology
[edit]The Jimol Formation is a reservoir and seal rock formation in the Guajira Basin.[6]
Fossil content
[edit]See also
[edit]
References
[edit]- ^ Moreno et al., 2015, p.7
- ^ Moreno et al., 2015, pp.18-27
- ^ a b Moreno et al., 2015, p.23
- ^ Rodríguez & Londoño, 2002, p.137
- ^ Moreno et al., 2015, p.27
- ^ ANH, 2010
- ^ a b Moreno et al., 2015, p.35
- ^ Aguilera et al., 2017, p.15
- ^ Hendy et al., 2015, p.52
- ^ Hendy et al., 2015, p.53
- ^ Hendy et al., 2015, p.54
Bibliography
[edit]Local geology
[edit]- ANH (2010), Guajira Basin - Colombia Open Round 2010 (PDF), ANH, p. 1, retrieved 2017-08-30
- Moreno, F.; Hendy, A.J.W.; Quiroz, L.; Hoyos, N.; Jones, D.S.; Zapata, V.; Zapata, S.; Ballen, G.A.; Cadena, A.L. Cárdenas, J.D. Carrillo Briceño, J.D. Carrillo, D. Delgado Sierra, J. Escobar, J.I. Martínez, C. Martínez, C. Montes, J. Moreno, N. Pérez, R. Sánchez, C. Suárez, M.C. Vallejo Pareja, C. Jaramillo, Edwin (2015), "Revised stratigraphy of Neogene strata in the Cocinetas Basin, La Guajira, Colombia" (PDF), Swiss Journal of Palaeontology, 134 (1): 5–43, Bibcode:2015SwJP..134....5M, doi:10.1007/s13358-015-0071-4, retrieved 2017-08-08
{{citation}}: CS1 maint: multiple names: authors list (link) - Rodríguez, Gabriel; Londoño, Ana Cristina (2002), Mapa geológico del Departamento de La Guajira - 1:250,000, INGEOMINAS, pp. 1–259, retrieved 2017-08-08
Paleontology
[edit]- Aguilera, Órangel; Andrade Silva, Guilherme Oliveira; Tadeu Lopes, Ricardo; Silveira Machado, Alessandra; Dos Santos, Thaís Maria; Marques, Gabriela; Bertucci, Thayse; Aguiar, Thayanne; Carrillo Briceño and Felix Rodríguez, Carlos Jaramillo, Jorge (2017), "Neogene Proto-Caribbean porcupinefishes (Diodontidae)" (PDF), PLoS ONE, 12 (7): 1–26, Bibcode:2017PLoSO..1281670A, doi:10.1371/journal.pone.0181670, PMC 5528887, PMID 28746370, retrieved 2019-02-09
- Hendy, Austin J.W.; Jones, Douglas S.; Moreno, Federico; Zapata, Vladimir; Jaramillo, Carlos (2015), "Neogene molluscs, shallow marine paleoenvironments, and chronostratigraphy of the Guajira Peninsula, Colombia" (PDF), Swiss Journal of Palaeontology, 134 (1): 45–75, Bibcode:2015SwJP..134...45H, doi:10.1007/s13358-015-0074-1, retrieved 2017-08-08
Maps
[edit]- Zuluaga, Carlos A.; Ochoa, Alberto; Muñoz, Carlos A.; Dorado, Camilo E.; Guerrero, Nathalia M.; Martínez, Ana M.; Medina, Paula A.; Ocampo, Edgar F.; Pinilla and Paula A. Ríos, Bibiana P. Rodríguez, Edward A. Salazar, Vladimir L. Zapata, Alejandro (2008), Plancha 3 - Puerto Estrella - 1:100,000, INGEOMINAS, p. 1, retrieved 2017-06-06
{{citation}}: CS1 maint: multiple names: authors list (link) - Zuluaga, Carlos A.; Ochoa, Alberto; Muñoz, Carlos A.; Dorado, Camilo E.; Guerrero, Nathalia M.; Martínez, Ana M.; Medina, Paula A.; Ocampo, Edgar F.; Pinilla and Paula A. Ríos, Bibiana P. Rodríguez, Edward A. Salazar, Vladimir L. Zapata, Alejandro (2008), Plancha 5 - Bahía Portete - 1:100,000, INGEOMINAS, p. 1, retrieved 2017-06-06
{{citation}}: CS1 maint: multiple names: authors list (link) - Zuluaga, Carlos A.; Ochoa, Alberto; Muñoz, Carlos A.; Dorado, Camilo E.; Guerrero, Nathalia M.; Martínez, Ana M.; Medina, Paula A.; Ocampo, Edgar F.; Pinilla and Paula A. Ríos, Bibiana P. Rodríguez, Edward A. Salazar, Vladimir L. Zapata, Alejandro (2008), Plancha 10 - Rancho Grande - 1:100,000, INGEOMINAS, p. 1, retrieved 2017-06-06
{{citation}}: CS1 maint: multiple names: authors list (link) - Zuluaga, Carlos A.; Ochoa, Alberto; Muñoz, Carlos A.; Dorado, Camilo E.; Guerrero, Nathalia M.; Martínez, Ana M.; Medina, Paula A.; Ocampo, Edgar F.; Pinilla and Paula A. Ríos, Bibiana P. Rodríguez, Edward A. Salazar, Vladimir L. Zapata, Alejandro (2008), Plancha 10bis - Rancho Grande - 1:100,000, INGEOMINAS, p. 1, retrieved 2017-06-06
{{citation}}: CS1 maint: multiple names: authors list (link)
