Regadera Formation

Regadera Formation
Stratigraphic range: Middle to Late Eocene
~47–40 Ma
TypeGeological formation
UnderliesUsme Fm., Tilatá Fm.
OverliesBogotá Formation
Thicknessup to 756 metres (2,480 ft)
Lithology
PrimarySandstone, conglomerate
OtherShale
Location
Coordinates4°23′30.8″N 74°08′26.3″W / 4.391889°N 74.140639°W / 4.391889; -74.140639
RegionBogotá savanna, Altiplano Cundiboyacense
Eastern Ranges, Andes
CountryColombia
Type section
Named forLa Regadera Reservoir
Named byJulivert
LocationUsme, Bogotá
Year defined1963
Coordinates4°23′30.8″N 74°08′26.3″W / 4.391889°N 74.140639°W / 4.391889; -74.140639
RegionCundinamarca
CountryColombia

Paleogeography of Northern South America
50 Ma, by Ron Blakey

The Regadera Formation (Spanish: Formación Regadera, E2r, Tpr) is a geological formation of the Bogotá savanna, Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The predominantly sandstone and conglomeratic formation, with pink shale beds intercalated, dates to the Paleogene period; Middle to Late Eocene epoch, and has a maximum thickness of 765 metres (2,510 ft).

Etymology

The formation was first described by Hubach in 1931 as part of the Usme Formation and redefined and named in 1963 by Julivert after the La Regadera Reservoir.[1]

Description

Lithologies

The Regadera Formation consists mainly of quartz arenitic sandstone and conglomerates with some shale beds.[1][2]

Stratigraphy and depositional environment

The Regadera Formation overlies the Bogotá Formation and is overlain by the Usme and Tilatá Formations. The age has been estimated, based on palynological data of Echitriporites trianguliformis var. orbicularis, Nothofagidites sp. and Multiporopollenites pauciporatus, to be Middle to Late Eocene.[3] The depositional environment has been interpreted as a braided river setting.[4]

Outcrops

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

The Regadera Formation is apart from its type locality in the synclinal of Usme, the valley of the Tunjuelo River, found in the synclinal of Sisga.[1] In the Tunjuelo River valley, the Regadera Formations is present in the escarpments on the river banks.[5]

Regional correlations

Stratigraphy of the Llanos Basin and surrounding provinces
Ma Age Paleomap Regional events Catatumbo Cordillera proximal Llanos distal Llanos Putumayo VSM Environments Maximum thickness Petroleum geology Notes
0.01 Holocene
Holocene volcanism
Seismic activity		 alluvium Overburden
1 Pleistocene
Pleistocene volcanism
Andean orogeny 3
Glaciations		 Guayabo Soatá
Sabana		 Necesidad Guayabo Gigante
 Alluvial to fluvial (Guayabo) 550 m (1,800 ft)
(Guayabo)		 [6][7][8][9]
2.6 Pliocene
Pliocene volcanism
Andean orogeny 3
GABI		 Subachoque
5.3 Messinian Andean orogeny 3
Foreland		 Marichuela Caimán Honda [8][10]
13.5 Langhian Regional flooding León hiatus Caja León Lacustrine (León) 400 m (1,300 ft)
(León)		 Seal [9][11]
16.2 Burdigalian Miocene inundations
Andean orogeny 2		 C1 Carbonera C1 Ospina Proximal fluvio-deltaic (C1) 850 m (2,790 ft)
(Carbonera)		 Reservoir [10][9]
17.3 C2 Carbonera C2 Distal lacustrine-deltaic (C2) Seal
19 C3 Carbonera C3 Proximal fluvio-deltaic (C3) Reservoir
21 Early Miocene Pebas wetlands C4 Carbonera C4 Barzalosa Distal fluvio-deltaic (C4) Seal
23 Late Oligocene
Andean orogeny 1
Foredeep		 C5 Carbonera C5 Orito Proximal fluvio-deltaic (C5) Reservoir [7][10]
25 C6 Carbonera C6 Distal fluvio-lacustrine (C6) Seal
28 Early Oligocene C7 C7 Pepino Gualanday Proximal deltaic-marine (C7) Reservoir [7][10][12]
32 Oligo-Eocene C8 Usme C8 onlap Marine-deltaic (C8) Seal
Source		 [12]
35 Late Eocene
Mirador Mirador Coastal (Mirador) 240 m (790 ft)
(Mirador)		 Reservoir [9][13]
40 Middle Eocene Regadera hiatus
45
50 Early Eocene
Socha Los Cuervos Deltaic (Los Cuervos) 260 m (850 ft)
(Los Cuervos)		 Seal
Source		 [9][13]
55 Late Paleocene PETM
2000 ppm CO2		 Los Cuervos Bogotá Gualanday
60 Early Paleocene SALMA Barco Guaduas Barco Rumiyaco Fluvial (Barco) 225 m (738 ft)
(Barco)		 Reservoir [6][7][10][9][14]
65 Maastrichtian
KT extinction Catatumbo Guadalupe Monserrate Deltaic-fluvial (Guadalupe) 750 m (2,460 ft)
(Guadalupe)		 Reservoir [6][9]
72 Campanian End of rifting Colón-Mito Juan [9][15]
83 Santonian Villeta/Güagüaquí
86 Coniacian
89 Turonian Cenomanian-Turonian anoxic event La Luna Chipaque Gachetá hiatus Restricted marine (all) 500 m (1,600 ft)
(Gachetá)		 Source [6][9][16]
93 Cenomanian
Rift 2
100 Albian Une Une Caballos Deltaic (Une) 500 m (1,600 ft)
(Une)		 Reservoir [10][16]
113 Aptian
Capacho Fómeque Motema Yaví Open marine (Fómeque) 800 m (2,600 ft)
(Fómeque)		 Source (Fóm) [7][9][17]
125 Barremian High biodiversity Aguardiente Paja Shallow to open marine (Paja) 940 m (3,080 ft)
(Paja)		 Reservoir [6]
129 Hauterivian
Rift 1 Tibú-
Mercedes		 Las Juntas hiatus Deltaic (Las Juntas) 910 m (2,990 ft)
(Las Juntas)		 Reservoir (LJun) [6]
133 Valanginian Río Negro Cáqueza
Macanal
Rosablanca		 Restricted marine (Macanal) 2,935 m (9,629 ft)
(Macanal)		 Source (Mac) [7][18]
140 Berriasian Girón
145 Tithonian Break-up of Pangea Jordán Arcabuco Buenavista
 Saldaña Alluvial, fluvial (Buenavista) 110 m (360 ft)
(Buenavista)		 "Jurassic" [10][19]
150 Early-Mid Jurassic
Passive margin 2 La Quinta
Noreán		 hiatus Coastal tuff (La Quinta) 100 m (330 ft)
(La Quinta)		 [20]
201 Late Triassic
Mucuchachi Payandé [10]
235 Early Triassic
Pangea hiatus "Paleozoic"
250 Permian
300 Late Carboniferous
Famatinian orogeny Cerro Neiva
()		 [21]
340 Early Carboniferous Fossil fish
Romer's gap		 Cuche
(355-385)		 Farallones
()		 Deltaic, estuarine (Cuche) 900 m (3,000 ft)
(Cuche)
360 Late Devonian
Passive margin 1 Río Cachirí
(360-419)		 Ambicá
()		 Alluvial-fluvial-reef (Farallones) 2,400 m (7,900 ft)
(Farallones)		 [18][22][23][24][25]
390 Early Devonian
High biodiversity Floresta
(387-400)
 Shallow marine (Floresta) 600 m (2,000 ft)
(Floresta)
410 Late Silurian Silurian mystery
425 Early Silurian hiatus
440 Late Ordovician
Rich fauna in Bolivia San Pedro
(450-490)		 Duda
()
470 Early Ordovician First fossils Busbanzá
(>470±22)
 Guape
()		 Río Nevado
()		 [26][27][28]
488 Late Cambrian
Regional intrusions Chicamocha
(490-515)		 Quetame
()		 Ariarí
()		 SJ del Guaviare
(490-590)		 San Isidro
()		 [29][30]
515 Early Cambrian Cambrian explosion [28][31]
542 Ediacaran
Break-up of Rodinia pre-Quetame post-Parguaza El Barro
()		 Yellow: allochthonous basement
(Chibcha terrane)
Green: autochthonous basement
(Río Negro-Juruena Province)		 Basement [32][33]
600 Neoproterozoic Cariri Velhos orogeny Bucaramanga
(600-1400)		 pre-Guaviare [29]
800
Snowball Earth [34]
1000 Mesoproterozoic
Sunsás orogeny Ariarí
(1000)		 La Urraca
(1030-1100)		 [35][36][37][38]
1300 Rondônia-Juruá orogeny pre-Ariarí Parguaza
(1300-1400)		 Garzón
(1180-1550)		 [39]
1400
pre-Bucaramanga [40]
1600 Paleoproterozoic Maimachi
(1500-1700)		 pre-Garzón [41]
1800
Tapajós orogeny Mitú
(1800)		 [39][41]
1950 Transamazonic orogeny pre-Mitú [39]
2200 Columbia
2530 Archean
Carajas-Imataca orogeny [39]
3100 Kenorland
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 and references

Notes

  1. ^ based on Duarte et al. (2019)[42], García González et al. (2009),[43] and geological report of Villavicencio[44]
  2. ^ based on Duarte et al. (2019)[42] and the hydrocarbon potential evaluation performed by the UIS and ANH in 2009[45]

References

  1. ^ a b c Montoya & Reyes, 2005, p.60
  2. ^ Bayona et al., 2010, p.5
  3. ^ Montoya & Reyes, 2005, p.64
  4. ^ Bayona et al., 2010, p.7
  5. ^ Bayona et al., 2010, p.11
  6. ^ a b c d e f García González et al., 2009, p.27
  7. ^ a b c d e f García González et al., 2009, p.50
  8. ^ a b García González et al., 2009, p.85
  9. ^ a b c d e f g h i j Barrero et al., 2007, p.60
  10. ^ a b c d e f g h Barrero et al., 2007, p.58
  11. ^ Plancha 111, 2001, p.29
  12. ^ a b Plancha 177, 2015, p.39
  13. ^ a b Plancha 111, 2001, p.26
  14. ^ Plancha 111, 2001, p.24
  15. ^ Plancha 111, 2001, p.23
  16. ^ a b Pulido & Gómez, 2001, p.32
  17. ^ Pulido & Gómez, 2001, p.30
  18. ^ a b Pulido & Gómez, 2001, pp.21-26
  19. ^ Pulido & Gómez, 2001, p.28
  20. ^ Correa Martínez et al., 2019, p.49
  21. ^ Plancha 303, 2002, p.27
  22. ^ Terraza et al., 2008, p.22
  23. ^ Plancha 229, 2015, pp.46-55
  24. ^ Plancha 303, 2002, p.26
  25. ^ Moreno Sánchez et al., 2009, p.53
  26. ^ Mantilla Figueroa et al., 2015, p.43
  27. ^ Manosalva Sánchez et al., 2017, p.84
  28. ^ a b Plancha 303, 2002, p.24
  29. ^ a b Mantilla Figueroa et al., 2015, p.42
  30. ^ Arango Mejía et al., 2012, p.25
  31. ^ Plancha 350, 2011, p.49
  32. ^ Pulido & Gómez, 2001, pp.17-21
  33. ^ Plancha 111, 2001, p.13
  34. ^ Plancha 303, 2002, p.23
  35. ^ Plancha 348, 2015, p.38
  36. ^ Planchas 367-414, 2003, p.35
  37. ^ Toro Toro et al., 2014, p.22
  38. ^ Plancha 303, 2002, p.21
  39. ^ a b c d Bonilla et al., 2016, p.19
  40. ^ Gómez Tapias et al., 2015, p.209
  41. ^ a b Bonilla et al., 2016, p.22
  42. ^ a b Duarte et al., 2019
  43. ^ García González et al., 2009
  44. ^ Pulido & Gómez, 2001
  45. ^ García González et al., 2009, p.60

Bibliography

  • Bayona, Germán; Montenegro, Omar; Cardona, Agustín; Jaramillo, Carlos; Lamus, Felipe; Morón, Sara; Quiroz, Luiz; Ruíz, María C.; Valencia and Mauricio Parra, Victor (2010), "Estratigrafía, procedencia, subsidencia y exhumación de las unidades paleógenas en el Sinclinal de Usme, sur de la zona axial de la Cordillera Oriental - Stratigraphy, provenance, subsidence and exhumation of the Paleogene succession in the Usme Syncline, southern axial zone of the Eastern Cordillera" (PDF), Geología Colombiana, 35: 5–35, archived from the original (PDF) on 2017-03-30, retrieved 2017-03-16
  • Montoya Arenas, Diana María; Reyes Torres, Germán Alfonso (2005), Geología de la Sabana de Bogotá, INGEOMINAS, pp. 1–104

Maps

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