Jimol Formation
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°WCoordinates: 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[]
The formation was defined by Renz in 1960 and named after Cerro Jimol.[1]
Description[]
Lithologies[]
The Jimol Formation consists of calcareous lithic and fossiliferous sandstones, siltstones and mudstones.[2]
Stratigraphy and depositional environment[]
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 of Venezuela and the Culebra Formation of Panama.[3] The Jimol Formation was deposited in a beach to shallow marine environment,[4] depth (less than 50 metres' [160 ft] water depth). This unit is correlated with the upper and lower of the Venezuelan .[5]
Petroleum geology[]
The Jimol Formation is a reservoir and seal rock formation in the .[6]
Fossil content[]
See also[]
References[]
- ^ 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[]
Local geology[]
- Guajira Basin - Colombia Open Round 2010, 1. . Accessed 2017-08-30. . 2010.
- Revised stratigraphy of Neogene strata in the Cocinetas Basin, La Guajira, Colombia. Swiss Journal of Palaeontology 134. 5–43. Accessed 2017-08-08. ; ; ; ; ; ; ; , and . 2015.
- Mapa geológico del Departamento de La Guajira - 1:250,000, 1–259. INGEOMINAS. Accessed 2017-08-08. , and . 2002.
Paleontology[]
- Neogene Proto-Caribbean porcupinefishes (Diodontidae). PLoS ONE 12. 1–26. Accessed 2019-02-09. ; ; ; ; ; ; ; , and . 2017.
- Neogene molluscs, shallow marine paleoenvironments, and chronostratigraphy of the Guajira Peninsula, Colombia. Swiss Journal of Palaeontology 134. 45–75. Accessed 2017-08-08. ; ; ; , and . 2015.
Maps[]
- Plancha 3 - Puerto Estrella - 1:100,000, 1. INGEOMINAS. Accessed 2017-06-06. ; ; ; ; ; ; ; , and . 2008.
- Plancha 5 - Bahía Portete - 1:100,000, 1. INGEOMINAS. Accessed 2017-06-06. ; ; ; ; ; ; ; , and . 2008.
- Plancha 10 - Rancho Grande - 1:100,000, 1. INGEOMINAS. Accessed 2017-06-06. ; ; ; ; ; ; ; , and . 2008.
- Plancha 10bis - Rancho Grande - 1:100,000, 1. INGEOMINAS. Accessed 2017-06-06. ; ; ; ; ; ; ; , and . 2008.
- Geologic formations of Colombia
- Neogene Colombia
- Miocene Series of South America
- Burdigalian
- Santacrucian
- Sandstone formations
- Siltstone formations
- Mudstone formations
- Beach deposits
- Shallow marine deposits
- Reservoir rock formations
- Seal rock formations
- Fossiliferous stratigraphic units of South America
- Paleontology in Colombia
- Geography of La Guajira Department