Macanal Formation

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Macanal Formation
Stratigraphic range: Berriasian-Valanginian
~140–132 Ma
PreꞒ
O
S
D
C
P
T
J
K
Pg
N
Macanal Formation - Outcrop - Eastern Ranges, Colombia.jpg
Outcrop of the Macanal Formation along the road between Bogotá and Villavicencio
TypeGeological formation
Unit of
UnderliesLas Juntas Formation
OverliesGuavio Fm., , , ,
Thicknessup to 2,935 m (9,629 ft)
Lithology
Primary
OtherLimestone, gypsum, emeralds
Location
Coordinates4°58′19″N 73°19′10″W / 4.97194°N 73.31944°W / 4.97194; -73.31944Coordinates: 4°58′19″N 73°19′10″W / 4.97194°N 73.31944°W / 4.97194; -73.31944
RegionAltiplano Cundiboyacense & Tenza Valley
 Eastern Ranges
  Andes
Country Colombia
Type section
Named forMacanal
Named byRodríguez & Ulloa
LocationMacanal
Year defined1979
Coordinates4°58′19″N 73°19′10″W / 4.97194°N 73.31944°W / 4.97194; -73.31944
RegionBoyacá
Country Colombia

The Macanal Formation or Macanal Shale (Spanish: (Formación) Lutitas de Macanal, Kilm, K1m) is a fossiliferous geological formation of the Altiplano Cundiboyacense and Tenza Valley in the Eastern Ranges of the Colombian Andes. The predominantly formation dates to the Early Cretaceous period; Berriasian to Valanginian epochs and has a maximum thickness of 2,935 metres (9,629 ft). The Macanal Formation contains numerous levels of fossiliferous abundances. Bivalves, ammonites and fossil flora have been found in the formation.

The formation is a source rock for oil and gas in the Eastern Cordillera Basin and adjacent Llanos Basin foothills and provides emeralds in the vicinity of Macanal, after which the formation is named.

Etymology[]

The formation was defined and named in 1979 by Rodríguez and Ulloa after Macanal, Cundinamarca.[1][2] The name Macanal is either derived from the Muysccubun word Macana, meaning garrote, or from the Macana palm tree.[3][4]

Description[]

Lithologies[]

Fractured sample of the Macanal Formation

The Macanal Formation has a maximum thickness of 2,935 metres (9,629 ft), and is characterised by a sequence of micaceous ,[2] with calcite veins and gypsum occurrences intercalated in the formation. The Macanal Formation contains high values of TOC.[5] In the and the adjacent foothills of the Llanos Basin, the Macanal Formation is a source rock for oil and gas.[6] In the vicinity of Macanal, the formation provides emeralds.[7][8]

Stratigraphy and depositional environment[]

The Macanal Formation, a unit of the , concordantly overlies the Guavio, , , and ,[9] and is concordantly overlain by the Las Juntas Formation. The age has been estimated to be Berriasian to Valanginian. Stratigraphically, the formation is time equivalent with the , , Rosablanca, Murca and La Naveta Formations.[10] The formation has been deposited in a shallow marine environment in an enclosed basin,[5] with as provenance areas the Santander High and the Guiana Shield.[11] The Macanal Formation is part of the syn-rift sequence of eastern Colombia.[12]

Fossil content[]

The Macanal Formation contains numerous levels of fossiliferous abundances. Bivalves, ammonites and flora have been found in the formation.[13] Ammonites of , , , , Neocomites cf. wichmanni, Olcostephanus sp., Olcostephanus cf. atherstoni, , Acanthodiscus sp. have been registered in the formation, as well as bivalves of , Trigonia cf. hondana, Trigonia (Buchotrigonia) cf. abrupta, Trigonia (Notoscabrotrigonia) cf. tocaimaana, and Exogyra cf. boussingaulti.[14] Analysis of the deformation registered in ammonite fossils has helped in understanding the tectonic history of the Llanos foothills of the Eastern Ranges.[15]

Outcrops[]

The Macanal Formation is found bordering the Guavio Reservoir
Macanal Formation is located in the Altiplano Cundiboyacense
Macanal Formation
Type locality of the Macanal Formation in the Tenza Valley to the east of the Altiplano Cundiboyacense

The Macanal Formation is apart from its type locality in the canyon,[16][17] found in the Cravo Sur anticline, east of the Ocetá Páramo,[18] in the Desespero Synclinal in the southern and northern parts of Labranzagrande,[19][20] around Páez and Campohermoso,[17] in the eastern part of Gama, bordering the ,[21] and in the Servitá Synclinal, west of Villavicencio.[22] The Macanal Formation crops out along the road between Bogotá and Villavicencio and is there heavily fractured and folded. The Macanal Formation is the most extensive formation around Cáqueza,[23] and Gachalá, Cundinamarca.[24]

The thrusts the Macanal Formation on top of the Fómeque Formation to the east of Lake Tota,[25] and the thrusts the Macanal Formation on top of the overlying Las Juntas Formation around Chámeza, Casanare.[26] The forms the contact between the Fómeque Formation and the Macanal Formation,[27] while the puts the in contact with the Macanal Formation near Quetame,[28] as does the .[29] The forms the contact between the and the Macanal Formation,[30] and the , part of the same system puts the Macanal Formation in contact with the Tertiary .[31] At this contact, brines are extracted from the formation.[32]

Regional correlations[]

Cretaceous stratigraphy of the central Colombian Eastern Ranges hide
Age Paleomap VMM Guaduas-Vélez W Emerald Belt Villeta anticlinal Chiquinquirá-
Arcabuco
Tunja-
Duitama
Altiplano Cundiboyacense El Cocuy
Maastrichtian Blakey 065Ma - COL.jpg eroded Guaduas
Guadalupe
Campanian
Oliní
Santonian -
Coniacian Oliní Conejo Chipaque
Loma Gorda undefined La Frontera
Turonian Blakey 090Ma - COL.jpg Hondita La Frontera
Cenomanian hiatus Simijaca
Pacho Fm. Hiló - Pacho Une
Albian Blakey 105Ma - COL.jpg Hiló Une
Capotes - -
Aptian Capotes Socotá - El Peñón Paja Fómeque
Paja Paja El Peñón Trincheras
La Naveta
Barremian Blakey 120Ma - COL.jpg
Hauterivian
Las Juntas
Rosablanca Ritoque
Valanginian Ritoque - Murca Rosablanca hiatus Macanal
Rosablanca
Berriasian Blakey 150Ma - COL.jpg Guavio
Arcabuco
Sources


Stratigraphy of the Llanos Basin and surrounding provinces hide
Ma Age Paleomap Regional events proximal Llanos distal Llanos Environments Maximum thickness Petroleum geology Notes
0.01 Holocene
Blakey 000Ma - COL.jpg
Holocene volcanism
Seismic activity
alluvium Overburden
1 Pleistocene
Blakey Pleist - COL.jpg
Pleistocene volcanism
Andean orogeny 3
Glaciations
Soatá
Sabana

Alluvial to fluvial (Guayabo) 550 m (1,800 ft)
(Guayabo)
[33][34][35][36]
2.6 Pliocene
Blakey 020Ma - COL.jpg
Pliocene volcanism
Andean orogeny 3
GABI
Subachoque
5.3 Messinian Andean orogeny 3
Foreland
Marichuela Honda [35][37]
13.5 Langhian Regional flooding hiatus Lacustrine (León) 400 m (1,300 ft)
(León)
Seal [36][38]
16.2 Burdigalian Miocene inundations
Andean orogeny 2
Proximal fluvio-deltaic (C1) 850 m (2,790 ft)
(Carbonera)
Reservoir [37][36]
17.3 Distal lacustrine-deltaic (C2) Seal
19 Proximal fluvio-deltaic (C3) Reservoir
21 Early Miocene Pebas wetlands Barzalosa Distal fluvio-deltaic (C4) Seal
23 Late Oligocene
Blakey 035Ma - COL.jpg
Andean orogeny 1
Foredeep
Proximal fluvio-deltaic (C5) Reservoir [34][37]
25 Distal fluvio-lacustrine (C6) Seal
28 Early Oligocene Proximal deltaic-marine (C7) Reservoir [34][37][39]
32 Oligo-Eocene Usme onlap Marine-deltaic (C8) Seal
Source
[39]
35 Late Eocene
Blakey 050Ma - COL.jpg
Coastal (Mirador) 240 m (790 ft)
(Mirador)
Reservoir [36][40]
40 Middle Eocene Regadera hiatus
45
50 Early Eocene
Blakey 065Ma - COL.jpg
Deltaic (Los Cuervos) 260 m (850 ft)
(Los Cuervos)
Seal
Source
[36][40]
55 Late Paleocene PETM
2000 ppm CO2
Bogotá
60 Early Paleocene SALMA Barco Guaduas Fluvial (Barco) 225 m (738 ft)
(Barco)
Reservoir [33][34][37][36][41]
65 Maastrichtian
Blakey 090Ma - COL.jpg
KT extinction Guadalupe Deltaic-fluvial (Guadalupe) 750 m (2,460 ft)
(Guadalupe)
Reservoir [33][36]
72 Campanian End of rifting [36][42]
83 Santonian Villeta/Güagüaquí
86 Coniacian
89 Turonian Cenomanian-Turonian anoxic event Chipaque Gachetá hiatus Restricted marine (all) 500 m (1,600 ft)
(Gachetá)
Source [33][36][43]
93 Cenomanian
Blakey 105Ma - COL.jpg
Rift 2
100 Albian Une Une Caballos Deltaic (Une) 500 m (1,600 ft)
(Une)
Reservoir [37][43]
113 Aptian
Blakey 120Ma - COL.jpg
Fómeque Open marine (Fómeque) 800 m (2,600 ft)
(Fómeque)
Source (Fóm) [34][36][44]
125 Barremian High biodiversity Paja Shallow to open marine (Paja) 940 m (3,080 ft)
(Paja)
Reservoir [33]
129 Hauterivian
Blakey 150Ma - COL.jpg
Rift 1 Las Juntas hiatus Deltaic (Las Juntas) 910 m (2,990 ft)
(Las Juntas)
Reservoir (LJun) [33]
133 Valanginian
Macanal
Rosablanca
Restricted marine (Macanal) 2,935 m (9,629 ft)
(Macanal)
Source (Mac) [34][45]
140 Berriasian Girón
145 Tithonian Break-up of Pangea Arcabuco
Alluvial, fluvial (Buenavista) 110 m (360 ft)
(Buenavista)
"Jurassic" [37][46]
150 Early-Mid Jurassic
Blakey 170Ma - COL.jpg
Passive margin 2 La Quinta

Noreán
hiatus Coastal tuff (La Quinta) 100 m (330 ft)
(La Quinta)
[47]
201 Late Triassic
Blakey 200Ma - COL.jpg
[37]
235 Early Triassic
237 Ma orogenies reconstruction.jpg
Pangea hiatus "Paleozoic"
250 Permian
280 Ma plate tectonic reconstruction.png
300 Late Carboniferous
Laurasia 330Ma.jpg
Famatinian orogeny
()
[48]
340 Early Carboniferous Fossil fish
Romer's gap
Cuche
(355-385)

()
Deltaic, estuarine (Cuche) 900 m (3,000 ft)
(Cuche)
360 Late Devonian
380 Ma plate tectonic reconstruction.png
Passive margin 1 Río Cachirí
(360-419)

()
Alluvial-fluvial-reef (Farallones) 2,400 m (7,900 ft)
(Farallones)
[45][49][50][51][52]
390 Early Devonian
Gondwana 420 Ma.png
High biodiversity Floresta
(387-400)
Shallow marine (Floresta) 600 m (2,000 ft)
(Floresta)
410 Late Silurian
425 Early Silurian hiatus
440 Late Ordovician
Middle Ordovician South Polar paleogeography - 460 Ma.png
Rich fauna in Bolivia
(450-490)

()
470 Early Ordovician First fossils
(>470±22)

()

()

()

Venado
(470-475)
[53][54][55]
488 Late Cambrian
ক্যাম্ব্রিয়ান৫০.png
Regional intrusions
(490-515)

()

()

(490-590)

()
[56][57]
515 Early Cambrian Cambrian explosion [55][58]
542 Ediacaran
Positions of ancient continents, 550 million years ago.jpg
Break-up of Rodinia pre-Quetame post-Parguaza
()
Yellow: allochthonous basement
(Chibcha Terrane)
Green: autochthonous basement
(Río Negro-Juruena Province)
Basement [59][60]
600 Neoproterozoic
Rodinia reconstruction.jpg
Cariri Velhos orogeny
(600-1400)
pre-Guaviare [56]
800
Pannotia - 2.png
Snowball Earth [61]
1000 Mesoproterozoic
Paleoglobe NO 1260 mya.gif
Sunsás orogeny
(1000)

(1030-1100)
[62][63][64][65]
1300 pre-Ariarí
(1300-1400)

(1180-1550)
[66]
1400
Paleoglobe NO 1590 mya-vector-colors.svg
pre-Bucaramanga [67]
1600 Paleoproterozoic
(1500-1700)
pre-Garzón [68]
1800
2050ma.png

(1800)
[66][68]
1950 pre-Mitú [66]
2200 Columbia
2530 Archean
Kenorland.jpg
[66]
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[]

Featured article candidate Geology of the Eastern Hills
B-Class article Geology of the Ocetá Páramo
C-Class article Geology of the Altiplano Cundiboyacense

Notes and references[]

Notes[]

  1. ^ based on Duarte et al. (2019)[69], García González et al. (2009),[70] and geological report of Villavicencio[71]
  2. ^ based on Duarte et al. (2019)[69] and the hydrocarbon potential evaluation performed by the UIS and in 2009[72]

References[]

  1. ^ Acosta & Ulloa, 2002, p.51
  2. ^ Jump up to: a b Rodríguez & Solano, 2000, p.47
  3. ^ (in Spanish) Official website Macanal
  4. ^ (in Spanish) Etymology Municipalities Boyacá
  5. ^ Jump up to: a b Acosta & Ulloa, 2002, p.52
  6. ^ García González et al., 2009, p.49
  7. ^ Uribe, 1960, p.5
  8. ^ ANM, 2015, p.1
  9. ^ Terraza et al., 2013, p.110
  10. ^ Villamil, 2012, p.168
  11. ^ Villamil, 2012, p.165
  12. ^ Schütz, 2012, p.26
  13. ^ Patiño et al., 2011, p.45
  14. ^ Piraquive et al., 2011, p.204
  15. ^ Montaña Cárdenas, 2015, p.52
  16. ^ Rodríguez & Solano, 2000, p.46
  17. ^ Jump up to: a b Plancha 210, 2010
  18. ^ Plancha 172, 1998
  19. ^ Plancha 193, 1992
  20. ^ Pinto Valderrama et al., 2010, p.44
  21. ^ Plancha 228, 1998
  22. ^ Plancha 266, 1998
  23. ^ Patiño et al., 2011, p.44
  24. ^ Terraza et al., 2013, p.101
  25. ^ Plancha 192, 1998
  26. ^ Plancha 211, 2009
  27. ^ Patiño et al., 2011, p.102
  28. ^ Patiño et al., 2011, p.110
  29. ^ Patiño et al., 2011, p.114
  30. ^ Patiño et al., 2011, p.122
  31. ^ Patiño et al., 2011, p.123
  32. ^ Patiño et al., 2011, p.125
  33. ^ Jump up to: a b c d e f García González et al., 2009, p.27
  34. ^ Jump up to: a b c d e f García González et al., 2009, p.50
  35. ^ Jump up to: a b García González et al., 2009, p.85
  36. ^ Jump up to: a b c d e f g h i j Barrero et al., 2007, p.60
  37. ^ Jump up to: a b c d e f g h Barrero et al., 2007, p.58
  38. ^ Plancha 111, 2001, p.29
  39. ^ Jump up to: a b Plancha 177, 2015, p.39
  40. ^ Jump up to: a b Plancha 111, 2001, p.26
  41. ^ Plancha 111, 2001, p.24
  42. ^ Plancha 111, 2001, p.23
  43. ^ Jump up to: a b Pulido & Gómez, 2001, p.32
  44. ^ Pulido & Gómez, 2001, p.30
  45. ^ Jump up to: a b Pulido & Gómez, 2001, pp.21-26
  46. ^ Pulido & Gómez, 2001, p.28
  47. ^ Correa Martínez et al., 2019, p.49
  48. ^ Plancha 303, 2002, p.27
  49. ^ Terraza et al., 2008, p.22
  50. ^ Plancha 229, 2015, pp.46-55
  51. ^ Plancha 303, 2002, p.26
  52. ^ Moreno Sánchez et al., 2009, p.53
  53. ^ Mantilla Figueroa et al., 2015, p.43
  54. ^ Manosalva Sánchez et al., 2017, p.84
  55. ^ Jump up to: a b Plancha 303, 2002, p.24
  56. ^ Jump up to: a b Mantilla Figueroa et al., 2015, p.42
  57. ^ Arango Mejía et al., 2012, p.25
  58. ^ Plancha 350, 2011, p.49
  59. ^ Pulido & Gómez, 2001, pp.17-21
  60. ^ Plancha 111, 2001, p.13
  61. ^ Plancha 303, 2002, p.23
  62. ^ Plancha 348, 2015, p.38
  63. ^ Planchas 367-414, 2003, p.35
  64. ^ Toro Toro et al., 2014, p.22
  65. ^ Plancha 303, 2002, p.21
  66. ^ Jump up to: a b c d Bonilla et al., 2016, p.19
  67. ^ Gómez Tapias et al., 2015, p.209
  68. ^ Jump up to: a b Bonilla et al., 2016, p.22
  69. ^ Jump up to: a b Duarte et al., 2019
  70. ^ García González et al., 2009
  71. ^ Pulido & Gómez, 2001
  72. ^ García González et al., 2009, p.60

Bibliography[]

Maps[]

External links[]

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