Fómeque Formation

The Fómeque Formation (Spanish: Formación Fómeque, Kif) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The predominantly organic shale formation dates to the Early Cretaceous period; Barremian to Late Aptian epochs and has a maximum thickness of 1,200 metres (3,900 ft).

Fómeque Formation
Stratigraphic range: Barremian-Late Aptian
~126–113 Ma
TypeGeological formation
Unit ofVilleta Group
UnderliesUne Formation
OverliesLas Juntas Formation
Thicknessup to 1,200 m (3,900 ft)
Lithology
PrimaryOrganic shale
OtherLimestone, sandstone
Location
Coordinates4°27′07″N 74°03′20″W
RegionAltiplano Cundiboyacense
Eastern Ranges, Andes
Country Colombia
Type section
Named forFómeque
Named byHubach
LocationFómeque
Year defined1957
Coordinates4°27′07″N 74°03′20″W
RegionCundinamarca, Boyacá
Country Colombia

Paleogeography of Northern South America
120 Ma, by Ron Blakey

Etymology

The formation was defined and named in 1957 by Hubach after Fómeque, Cundinamarca.[1]

Description

Lithologies

The Fómeque Formation has a maximum thickness of 1,200 metres (3,900 ft), and is characterised by a sequence of pyritic organic shales, with limestones and sandstone banks intercalated in the formation. The Fómeque Formation contains high values of TOC.[2] Fossils of Acarthohoplites sp., Melchionites sp., Nicklesia sp., Olcostephanus sp., Pulchellia sp. have been found in the formation.[3]

Stratigraphy and depositional environment

The Fómeque Formation overlies the Las Juntas Formation and is overlain by the Une Formation. The age has been estimated to be Barremian to Late Aptian. Stratigraphically, the formation is time equivalent with the Mercedes Formation. The formation has been deposited in a shallow marine environment.[2]

Outcrops

Type locality of the Fómeque Formation to the southeast of the Bogotá savanna

The Fómeque Formation is apart from its type locality, found in other parts of the Eastern Ranges.

Regional correlations

Cretaceous stratigraphy of the central Colombian Eastern Ranges
AgePaleomapVMMGuaduas-VélezW Emerald BeltVilleta anticlinalChiquinquirá-
Arcabuco
Tunja-
Duitama
Altiplano CundiboyacenseEl Cocuy
MaastrichtianUmirCórdobaSecaerodedGuaduasColón-Mito Juan
UmirGuadalupe
CampanianCórdoba
Oliní
SantonianLa LunaCimarrona - La TablaLa Luna
ConiacianOliníConejoChipaque
Güagüaquí
Loma GordaundefinedLa Frontera
TuronianHonditaLa FronteraOtanche
CenomanianSimitíhiatusLa CoronaSimijacaCapacho
Pacho Fm.Hiló - PachoChuruvitaUneAguardiente
AlbianHilóChiquinquiráTibasosaUne
TablazoTablazoCapotes - La Palma - SimitíSimitíTibú-Mercedes
AptianCapotesSocotá - El PeñónPajaFómeque
PajaPajaEl PeñónTrincherasRío Negro
La Naveta
Barremian
HauterivianMuzo
Cáqueza
Las Juntas
RosablancaRitoque
ValanginianRitoqueFuratenaÚtica - MurcaRosablancahiatusMacanal
Rosablanca
BerriasianCumbreCumbreLos MediosGuavio
TamborArcabucoCumbre
Sources
Stratigraphy of the Llanos Basin and surrounding provinces
MaAgePaleomapRegional eventsCatatumboCordilleraproximal Llanosdistal LlanosPutumayoVSMEnvironmentsMaximum thicknessPetroleum geologyNotes
0.01Holocene
Holocene volcanism
Seismic activity
alluviumOverburden
1Pleistocene
Pleistocene volcanism
Andean orogeny 3
Glaciations
GuayaboSoatá
Sabana
NecesidadGuayaboGigante
Neiva
Alluvial to fluvial (Guayabo)550 m (1,800 ft)
(Guayabo)
[4][5][6][7]
2.6Pliocene
Pliocene volcanism
Andean orogeny 3
GABI
Subachoque
5.3MessinianAndean orogeny 3
Foreland
MarichuelaCaimánHonda[6][8]
13.5LanghianRegional floodingLeónhiatusCajaLeónLacustrine (León)400 m (1,300 ft)
(León)
Seal[7][9]
16.2BurdigalianMiocene inundations
Andean orogeny 2
C1Carbonera C1OspinaProximal fluvio-deltaic (C1)850 m (2,790 ft)
(Carbonera)
Reservoir[8][7]
17.3C2Carbonera C2Distal lacustrine-deltaic (C2)Seal
19C3Carbonera C3Proximal fluvio-deltaic (C3)Reservoir
21Early MiocenePebas wetlandsC4Carbonera C4BarzalosaDistal fluvio-deltaic (C4)Seal
23Late Oligocene
Andean orogeny 1
Foredeep
C5Carbonera C5OritoProximal fluvio-deltaic (C5)Reservoir[5][8]
25C6Carbonera C6Distal fluvio-lacustrine (C6)Seal
28Early OligoceneC7C7PepinoGualandayProximal deltaic-marine (C7)Reservoir[5][8][10]
32Oligo-EoceneC8UsmeC8onlapMarine-deltaic (C8)Seal
Source
[10]
35Late Eocene
MiradorMiradorCoastal (Mirador)240 m (790 ft)
(Mirador)
Reservoir[7][11]
40Middle EoceneRegaderahiatus
45
50Early Eocene
SochaLos CuervosDeltaic (Los Cuervos)260 m (850 ft)
(Los Cuervos)
Seal
Source
[7][11]
55Late PaleocenePETM
2000 ppm CO2
Los CuervosBogotáGualanday
60Early PaleoceneSALMABarcoGuaduasBarcoRumiyacoFluvial (Barco)225 m (738 ft)
(Barco)
Reservoir[4][5][8][7][12]
65Maastrichtian
KT extinctionCatatumboGuadalupeMonserrateDeltaic-fluvial (Guadalupe)750 m (2,460 ft)
(Guadalupe)
Reservoir[4][7]
72CampanianEnd of riftingColón-Mito Juan[7][13]
83SantonianVilleta/Güagüaquí
86Coniacian
89TuronianCenomanian-Turonian anoxic eventLa LunaChipaqueGachetáhiatusRestricted marine (all)500 m (1,600 ft)
(Gachetá)
Source[4][7][14]
93Cenomanian
Rift 2
100AlbianUneUneCaballosDeltaic (Une)500 m (1,600 ft)
(Une)
Reservoir[8][14]
113Aptian
CapachoFómequeMotemaYavíOpen marine (Fómeque)800 m (2,600 ft)
(Fómeque)
Source (Fóm)[5][7][15]
125BarremianHigh biodiversityAguardientePajaShallow to open marine (Paja)940 m (3,080 ft)
(Paja)
Reservoir[4]
129Hauterivian
Rift 1Tibú-
Mercedes
Las JuntashiatusDeltaic (Las Juntas)910 m (2,990 ft)
(Las Juntas)
Reservoir (LJun)[4]
133ValanginianRío NegroCáqueza
Macanal
Rosablanca
Restricted marine (Macanal)2,935 m (9,629 ft)
(Macanal)
Source (Mac)[5][16]
140BerriasianGirón
145TithonianBreak-up of PangeaJordánArcabucoBuenavista
Batá
SaldañaAlluvial, fluvial (Buenavista)110 m (360 ft)
(Buenavista)
"Jurassic"[8][17]
150Early-Mid Jurassic
Passive margin 2La Quinta
Montebel

Noreán
hiatusCoastal tuff (La Quinta)100 m (330 ft)
(La Quinta)
[18]
201Late Triassic
MucuchachiPayandé[8]
235Early Triassic
Pangeahiatus"Paleozoic"
250Permian
300Late Carboniferous
Famatinian orogenyCerro Neiva
()
[19]
340Early CarboniferousFossil fish
Romer's gap
Cuche
(355-385)
Farallones
()
Deltaic, estuarine (Cuche)900 m (3,000 ft)
(Cuche)
360Late Devonian
Passive margin 1Río Cachirí
(360-419)
Ambicá
()
Alluvial-fluvial-reef (Farallones)2,400 m (7,900 ft)
(Farallones)
[16][20][21][22][23]
390Early Devonian
High biodiversityFloresta
(387-400)
El Tíbet
Shallow marine (Floresta)600 m (2,000 ft)
(Floresta)
410Late SilurianSilurian mystery
425Early Silurianhiatus
440Late Ordovician
Rich fauna in BoliviaSan Pedro
(450-490)
Duda
()
470Early OrdovicianFirst fossilsBusbanzá
(>470±22)
Chuscales
Otengá
Guape
()
Río Nevado
()
Hígado
()
Agua Blanca
Venado
(470-475)
[24][25][26]
488Late Cambrian
Regional intrusionsChicamocha
(490-515)
Quetame
()
Ariarí
()
SJ del Guaviare
(490-590)
San Isidro
()
[27][28]
515Early CambrianCambrian explosion[26][29]
542Ediacaran
Break-up of Rodiniapre-Quetamepost-ParguazaEl Barro
()
Yellow: allochthonous basement
(Chibcha Terrane)
Green: autochthonous basement
(Río Negro-Juruena Province)
Basement[30][31]
600Neoproterozoic
Cariri Velhos orogenyBucaramanga
(600-1400)
pre-Guaviare[27]
800
Snowball Earth[32]
1000Mesoproterozoic
Sunsás orogenyAriarí
(1000)
La Urraca
(1030-1100)
[33][34][35][36]
1300Rondônia-Juruá orogenypre-AriaríParguaza
(1300-1400)
Garzón
(1180-1550)
[37]
1400
pre-Bucaramanga[38]
1600PaleoproterozoicMaimachi
(1500-1700)
pre-Garzón[39]
1800
Tapajós orogenyMitú
(1800)
[37][39]
1950Transamazonic orogenypre-Mitú[37]
2200Columbia
2530Archean
Carajas-Imataca orogeny[37]
3100Kenorland
Sources
Legend
  • group
  • important formation
  • fossiliferous formation
  • minor formation
  • (age in Ma)
  • proximal Llanos (Medina)[note 1]
  • distal Llanos (Saltarin 1A well)[note 2]

See also

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

Notes

  1. based on Duarte et al. (2019)[40], García González et al. (2009),[41] and geological report of Villavicencio[42]
  2. based on Duarte et al. (2019)[40] and the hydrocarbon potential evaluation performed by the UIS and ANH in 2009[43]

References

  1. Acosta & Ulloa, 2002, p.52
  2. Acosta & Ulloa, 2002, p.53
  3. Caicedo et al., 2002, p.29
  4. García González et al., 2009, p.27
  5. García González et al., 2009, p.50
  6. García González et al., 2009, p.85
  7. Barrero et al., 2007, p.60
  8. Barrero et al., 2007, p.58
  9. Plancha 111, 2001, p.29
  10. Plancha 177, 2015, p.39
  11. Plancha 111, 2001, p.26
  12. Plancha 111, 2001, p.24
  13. Plancha 111, 2001, p.23
  14. Pulido & Gómez, 2001, p.32
  15. Pulido & Gómez, 2001, p.30
  16. Pulido & Gómez, 2001, pp.21-26
  17. Pulido & Gómez, 2001, p.28
  18. Correa Martínez et al., 2019, p.49
  19. Plancha 303, 2002, p.27
  20. Terraza et al., 2008, p.22
  21. Plancha 229, 2015, pp.46-55
  22. Plancha 303, 2002, p.26
  23. Moreno Sánchez et al., 2009, p.53
  24. Mantilla Figueroa et al., 2015, p.43
  25. Manosalva Sánchez et al., 2017, p.84
  26. Plancha 303, 2002, p.24
  27. Mantilla Figueroa et al., 2015, p.42
  28. Arango Mejía et al., 2012, p.25
  29. Plancha 350, 2011, p.49
  30. Pulido & Gómez, 2001, pp.17-21
  31. Plancha 111, 2001, p.13
  32. Plancha 303, 2002, p.23
  33. Plancha 348, 2015, p.38
  34. Planchas 367-414, 2003, p.35
  35. Toro Toro et al., 2014, p.22
  36. Plancha 303, 2002, p.21
  37. Bonilla et al., 2016, p.19
  38. Gómez Tapias et al., 2015, p.209
  39. Bonilla et al., 2016, p.22
  40. Duarte et al., 2019
  41. García González et al., 2009
  42. Pulido & Gómez, 2001
  43. García González et al., 2009, p.60

Bibliography

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