Une Formation

Geological Formation From Wikipedia, the free encyclopedia

The Une Formation (Spanish: Formación Une, Kiu) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The predominantly sandstone formation dates to the Middle Cretaceous period; Albian to Cenomanian epochs and has a maximum thickness of 1,100 metres (3,600 ft).

TypeGeological formation
Unit ofVilleta Group
UnderliesChipaque Formation
OverliesFómeque Fm., Tibasosa Fm.
Quick facts Type, Unit of ...
Une Formation
Stratigraphic range: Albian-Cenomanian
~105–97 Ma
TypeGeological formation
Unit ofVilleta Group
UnderliesChipaque Formation
OverliesFómeque Fm., Tibasosa Fm.
Thicknessup to 1,100 m (3,600 ft)
Lithology
PrimarySandstone
Location
Coordinates4°27′07″N 74°03′20″W
RegionAltiplano Cundiboyacense
Eastern Ranges, Andes
CountryColombia
Type section
Named forUne
Named byHubach
LocationUne
Year defined1957
Coordinates4°27′07″N 74°03′20″W
RegionCundinamarca, Boyacá
CountryColombia

Paleogeography of Northern South America
105 Ma, by Ron Blakey
Close

Etymology

The formation was defined in 1957 by Hubach after Une, Cundinamarca.[1]

Description

Lithologies

The Une Formation has a maximum thickness of 1,100 metres (3,600 ft) and is characterised by a sequence of sandstones.[2] Fossils of Heminautilus etheringtoni have been found in the Une Formation.[3]

Stratigraphy and depositional environment

The Une Formation, part of the Villeta Group, overlies the Fómeque Formation and is overlain by the Chipaque Formation. The age has been estimated to be Albian-Cenomanian. Stratigraphically, the formation is time equivalent with the Simijaca, Aguardiente, Caballos and Pacho Formations. The formation has been deposited in a near shore deltaic environment.[4]

Outcrops

Une Formation is located in the Bogotá savanna
Une Formation
Type locality of the Une Formation to the south of the Bogotá savanna

The Une Formation is apart from its type locality, found on the Sumapaz Páramo.[2]

Regional correlations

More information Ma, Age ...
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)		[5][6][7][8]
2.6Pliocene
Pliocene volcanism
Andean orogeny 3
GABI		Subachoque
5.3MessinianAndean orogeny 3
Foreland		MarichuelaCaimánHonda[7][9]
13.5LanghianRegional floodingLeónhiatusCajaLeónLacustrine (León)400 m (1,300 ft)
(León)		Seal[8][10]
16.2BurdigalianMiocene inundations
Andean orogeny 2		C1Carbonera C1OspinaProximal fluvio-deltaic (C1)850 m (2,790 ft)
(Carbonera)		Reservoir[9][8]
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[6][9]
25C6Carbonera C6Distal fluvio-lacustrine (C6)Seal
28Early OligoceneC7C7PepinoGualandayProximal deltaic-marine (C7)Reservoir[6][9][11]
32Oligo-EoceneC8UsmeC8onlapMarine-deltaic (C8)Seal
Source		[11]
35Late Eocene
MiradorMiradorCoastal (Mirador)240 m (790 ft)
(Mirador)		Reservoir[8][12]
40Middle EoceneRegaderahiatus
45
50Early Eocene
SochaLos CuervosDeltaic (Los Cuervos)260 m (850 ft)
(Los Cuervos)		Seal
Source		[8][12]
55Late PaleocenePETM
2000 ppm CO2		Los CuervosBogotáGualanday
60Early PaleoceneSALMABarcoGuaduasBarcoRumiyacoFluvial (Barco)225 m (738 ft)
(Barco)		Reservoir[5][6][9][8][13]
65Maastrichtian
KT extinctionCatatumboGuadalupeMonserrateDeltaic-fluvial (Guadalupe)750 m (2,460 ft)
(Guadalupe)		Reservoir[5][8]
72CampanianEnd of riftingColón-Mito Juan[8][14]
83SantonianVilleta/Güagüaquí
86Coniacian
89TuronianCenomanian-Turonian anoxic eventLa LunaChipaqueGachetáhiatusRestricted marine (all)500 m (1,600 ft)
(Gachetá)		Source[5][8][15]
93Cenomanian
Rift 2
100AlbianUneUneCaballosDeltaic (Une)500 m (1,600 ft)
(Une)		Reservoir[9][15]
113Aptian
CapachoFómequeMotemaYavíOpen marine (Fómeque)800 m (2,600 ft)
(Fómeque)		Source (Fóm)[6][8][16]
125BarremianHigh biodiversityAguardientePajaShallow to open marine (Paja)940 m (3,080 ft)
(Paja)		Reservoir[5]
129Hauterivian
Rift 1Tibú-
Mercedes		Las JuntashiatusDeltaic (Las Juntas)910 m (2,990 ft)
(Las Juntas)		Reservoir (LJun)[5]
133ValanginianRío NegroCáqueza
Macanal
Rosablanca		Restricted marine (Macanal)2,935 m (9,629 ft)
(Macanal)		Source (Mac)[6][17]
140BerriasianGirón
145TithonianBreak-up of PangeaJordánArcabucoBuenavista
Batá
SaldañaAlluvial, fluvial (Buenavista)110 m (360 ft)
(Buenavista)		"Jurassic"[9][18]
150Early-Mid Jurassic
Passive margin 2La Quinta
Montebel

Noreán		hiatusCoastal tuff (La Quinta)100 m (330 ft)
(La Quinta)		[19]
201Late Triassic
MucuchachiPayandé[9]
235Early Triassic
Pangeahiatus"Paleozoic"
250Permian
300Late Carboniferous
Famatinian orogenyCerro Neiva
()		[20]
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)		[17][21][22][23][24]
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)
[25][26][27]
488Late Cambrian
Regional intrusionsChicamocha
(490-515)		Quetame
()		Ariarí
()		SJ del Guaviare
(490-590)		San Isidro
()		[28][29]
515Early CambrianCambrian explosion[27][30]
542Ediacaran
Break-up of Rodiniapre-Quetamepost-ParguazaEl Barro
()		Yellow: allochthonous basement
(Chibcha terrane)
Green: autochthonous basement
(Río Negro-Juruena Province)		Basement[31][32]
600NeoproterozoicCariri Velhos orogenyBucaramanga
(600-1400)		pre-Guaviare[28]
800
Snowball Earth[33]
1000Mesoproterozoic
Sunsás orogenyAriarí
(1000)		La Urraca
(1030-1100)		[34][35][36][37]
1300Rondônia-Juruá orogenypre-AriaríParguaza
(1300-1400)		Garzón
(1180-1550)		[38]
1400
pre-Bucaramanga[39]
1600PaleoproterozoicMaimachi
(1500-1700)		pre-Garzón[40]
1800
Tapajós orogenyMitú
(1800)		[38][40]
1950Transamazonic orogenypre-Mitú[38]
2200Columbia
2530Archean
Carajas-Imataca orogeny[38]
3100Kenorland
Sources
Close
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. [1]
    based on Duarte et al. (2019)[41], García González et al. (2009),[42] and geological report of Villavicencio[43]
  2. [2]
    based on Duarte et al. (2019)[41] and the hydrocarbon potential evaluation performed by the UIS and ANH in 2009[44]

References

External links

Related Articles

Wikiwand AI