Marichuela Formation

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Marichuela Formation
Stratigraphic range: Late Miocene-Early Pliocene
~8.2–5 Ma
TypeGeological formation
UnderliesTilatá Formation
OverliesGuadalupe Group
Thicknessup to 40 metres (130 ft)
Lithology
PrimaryConglomerate
Location
Coordinates4°21′40.3″N 74°07′50″W / 4.361194°N 74.13056°W / 4.361194; -74.13056Coordinates: 4°21′40.3″N 74°07′50″W / 4.361194°N 74.13056°W / 4.361194; -74.13056
RegionBogotá savanna, Altiplano Cundiboyacense
Eastern Ranges, Andes
Country Colombia
Type section
Named forMarichuela neighbourhood
Named byHelmens & Hammen
LocationUsme, Bogotá
Year defined1995
Coordinates4°21′40.3″N 74°07′50″W / 4.361194°N 74.13056°W / 4.361194; -74.13056
RegionCundinamarca
Country Colombia

The Marichuela Formation (Spanish: Formación Marichuela, N1m) is a geological formation of the Bogotá savanna, Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The formation consists of coarse to very coarse conglomerates. The Marichuela Formation dates to the Neogene period; Late Miocene to Early Pliocene epochs, and has a maximum thickness of 40 metres (130 ft).

Etymology[]

The formation was defined by Helmens and Van der Hammen in 1995 and named after the Marichuela neighbourhood of Usme.[1] Part of the Marichuela Formation had been included in the Conos de Tunjuelo, defined by Julivert in 1961.[2]

Description[]

Lithologies[]

The Marichuela Formation consists of coarse to very coarse conglomerates.[1]

Stratigraphy and depositional environment[]

The Marichuela Formation unconformably overlies the Cretaceous rocks of the Guadalupe Group. The age has been estimated to be Late Miocene to Early Pliocene.[3] The depositional environment has been interpreted as alluvial fans, caused by earthquakes or heavy rains.[4]

Outcrops[]

Marichuela Formation is located in the Bogotá savanna
Marichuela Formation
Type locality of the Marichuela Formation to the southeast of the Bogotá savanna

The Marichuela Formation is apart from its type locality in the Usme Synclinal, the valley of the Tunjuelo River, found in the synclinals of , and La Calera.[1]

Regional correlations[]

Stratigraphy of the Llanos Basin and surrounding provinces
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)
[5][6][7][8]
2.6 Pliocene
Blakey 020Ma - COL.jpg
Pliocene volcanism
Andean orogeny 3
GABI
Subachoque
5.3 Messinian Andean orogeny 3
Foreland
Marichuela Honda [7][9]
13.5 Langhian Regional flooding hiatus Lacustrine (León) 400 m (1,300 ft)
(León)
Seal [8][10]
16.2 Burdigalian Miocene inundations
Andean orogeny 2
Proximal fluvio-deltaic (C1) 850 m (2,790 ft)
(Carbonera)
Reservoir [9][8]
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 [6][9]
25 Distal fluvio-lacustrine (C6) Seal
28 Early Oligocene Proximal deltaic-marine (C7) Reservoir [6][9][11]
32 Oligo-Eocene Usme onlap Marine-deltaic (C8) Seal
Source
[11]
35 Late Eocene
Blakey 050Ma - COL.jpg
Coastal (Mirador) 240 m (790 ft)
(Mirador)
Reservoir [8][12]
40 Middle Eocene Regadera hiatus
45
50 Early Eocene
Blakey 065Ma - COL.jpg
Deltaic (Los Cuervos) 260 m (850 ft)
(Los Cuervos)
Seal
Source
[8][12]
55 Late Paleocene PETM
2000 ppm CO2
Bogotá
60 Early Paleocene SALMA Barco Guaduas Fluvial (Barco) 225 m (738 ft)
(Barco)
Reservoir [5][6][9][8][13]
65 Maastrichtian
Blakey 090Ma - COL.jpg
KT extinction Guadalupe Deltaic-fluvial (Guadalupe) 750 m (2,460 ft)
(Guadalupe)
Reservoir [5][8]
72 Campanian End of rifting [8][14]
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 [5][8][15]
93 Cenomanian
Blakey 105Ma - COL.jpg
Rift 2
100 Albian Une Une Caballos Deltaic (Une) 500 m (1,600 ft)
(Une)
Reservoir [9][15]
113 Aptian
Blakey 120Ma - COL.jpg
Fómeque Open marine (Fómeque) 800 m (2,600 ft)
(Fómeque)
Source (Fóm) [6][8][16]
125 Barremian High biodiversity Paja Shallow to open marine (Paja) 940 m (3,080 ft)
(Paja)
Reservoir [5]
129 Hauterivian
Blakey 150Ma - COL.jpg
Rift 1 Las Juntas hiatus Deltaic (Las Juntas) 910 m (2,990 ft)
(Las Juntas)
Reservoir (LJun) [5]
133 Valanginian
Macanal
Rosablanca
Restricted marine (Macanal) 2,935 m (9,629 ft)
(Macanal)
Source (Mac) [6][17]
140 Berriasian Girón
145 Tithonian Break-up of Pangea Arcabuco
Alluvial, fluvial (Buenavista) 110 m (360 ft)
(Buenavista)
"Jurassic" [9][18]
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)
[19]
201 Late Triassic
Blakey 200Ma - COL.jpg
[9]
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
()
[20]
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)
[17][21][22][23][24]
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)
[25][26][27]
488 Late Cambrian
ক্যাম্ব্রিয়ান৫০.png
Regional intrusions
(490-515)

()

()

(490-590)

()
[28][29]
515 Early Cambrian Cambrian explosion [27][30]
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 [31][32]
600 Neoproterozoic
Rodinia reconstruction.jpg
Cariri Velhos orogeny
(600-1400)
pre-Guaviare [28]
800
Pannotia - 2.png
Snowball Earth [33]
1000 Mesoproterozoic
Paleoglobe NO 1260 mya.gif
Sunsás orogeny
(1000)

(1030-1100)
[34][35][36][37]
1300 pre-Ariarí
(1300-1400)

(1180-1550)
[38]
1400
Paleoglobe NO 1590 mya-vector-colors.svg
pre-Bucaramanga [39]
1600 Paleoproterozoic
(1500-1700)
pre-Garzón [40]
1800
2050ma.png

(1800)
[38][40]
1950 pre-Mitú [38]
2200 Columbia
2530 Archean
Kenorland.jpg
[38]
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[]

Good article nominee Geology of the Eastern Hills
B-Class article Geology of the Ocetá Páramo
C-Class article Geology of the Altiplano Cundiboyacense

Notes[]

  1. ^ based on Duarte et al. (2019)[41], García González et al. (2009),[42] and geological report of Villavicencio[43]
  2. ^ based on Duarte et al. (2019)[41] and the hydrocarbon potential evaluation performed by the UIS and in 2009[44]

References[]

  1. ^ a b c Montoya & Reyes, 2005, p.65
  2. ^ Suna Hisca, s.a., p.45
  3. ^ Montoya & Reyes, 2005, p.67
  4. ^ Montoya & Reyes, 2005, p.66
  5. ^ a b c d e f García González et al., 2009, p.27
  6. ^ a b c d e f García González et al., 2009, p.50
  7. ^ a b García González et al., 2009, p.85
  8. ^ a b c d e f g h i j Barrero et al., 2007, p.60
  9. ^ a b c d e f g h Barrero et al., 2007, p.58
  10. ^ Plancha 111, 2001, p.29
  11. ^ a b Plancha 177, 2015, p.39
  12. ^ a b Plancha 111, 2001, p.26
  13. ^ Plancha 111, 2001, p.24
  14. ^ Plancha 111, 2001, p.23
  15. ^ a b Pulido & Gómez, 2001, p.32
  16. ^ Pulido & Gómez, 2001, p.30
  17. ^ a b Pulido & Gómez, 2001, pp.21-26
  18. ^ Pulido & Gómez, 2001, p.28
  19. ^ Correa Martínez et al., 2019, p.49
  20. ^ Plancha 303, 2002, p.27
  21. ^ Terraza et al., 2008, p.22
  22. ^ Plancha 229, 2015, pp.46-55
  23. ^ Plancha 303, 2002, p.26
  24. ^ Moreno Sánchez et al., 2009, p.53
  25. ^ Mantilla Figueroa et al., 2015, p.43
  26. ^ Manosalva Sánchez et al., 2017, p.84
  27. ^ a b Plancha 303, 2002, p.24
  28. ^ a b Mantilla Figueroa et al., 2015, p.42
  29. ^ Arango Mejía et al., 2012, p.25
  30. ^ Plancha 350, 2011, p.49
  31. ^ Pulido & Gómez, 2001, pp.17-21
  32. ^ Plancha 111, 2001, p.13
  33. ^ Plancha 303, 2002, p.23
  34. ^ Plancha 348, 2015, p.38
  35. ^ Planchas 367-414, 2003, p.35
  36. ^ Toro Toro et al., 2014, p.22
  37. ^ Plancha 303, 2002, p.21
  38. ^ a b c d Bonilla et al., 2016, p.19
  39. ^ Gómez Tapias et al., 2015, p.209
  40. ^ a b Bonilla et al., 2016, p.22
  41. ^ a b Duarte et al., 2019
  42. ^ García González et al., 2009
  43. ^ Pulido & Gómez, 2001
  44. ^ García González et al., 2009, p.60

Bibliography[]

  • Montoya Arenas, Diana María, and Germán Alfonso Reyes Torres. 2005. Geología de la Sabana de Bogotá, 1–104. INGEOMINAS.
  • N., N. s.a. Parque Ecológico Distrital de Montaña Entrenubes – Tomo I – Componente Biofísico – Geología, 36–51. Corporación Suna Hisca.

Maps[]

External links[]

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