The La Quinta Formation is a Jurassic geologic formation which crops out in the Cordillera de Mérida and Serranía del Perijá of western Venezuela and northeastern Colombia. The formation is also present in the subsurface of the Cesar-Ranchería and Maracaibo Basins. At its type locality near La Grita, Táchira, it consists of a basal dacitic tuff followed by interlayered sandstones, tuffs, siltstones and rare limestones.[1] Dinosaur remains including Laquintasaura,[2] Tachiraptor, and Perijasaurus[3] are among the fossils that have been recovered from the formation.[4]

La Quinta Formation
Stratigraphic range: HettangianAalenian
201.46–174.8 Ma
The La Quinta Formation near its type section in Táchira, Venezuela
TypeGeological formation
UnderliesRío Negro Formation
OverliesMucuchachi Formation
Thicknessup to 11,000 ft (3,400 m)
Lithology
PrimarySandstone
OtherTuff, conglomerate
Location
Coordinates8°09′N 72°01′W / 8.15°N 72.02°W / 8.15; -72.02
Approximate paleocoordinates0°06′N 42°42′W / 0.1°N 42.7°W / 0.1; -42.7
RegionCesar-Ranchería & Maracaibo Basins
Serranía del Perijá & Cordillera de Mérida
Country Colombia
 Venezuela
Type section
Named forLa Quinta quarry
La Quinta Formation is located in Venezuela
La Quinta Formation
La Quinta Formation (Venezuela)

U–Pb zircon analysis demonstrates that the formation dates to 200.91+0.55 Ma at its base[2] and a maximum age of 174.8 Ma.[3]

Paleofauna

edit
Genus Species location Material Notes Images
Laquintasaura[2] L. venezuelae

Venezuela

Partial skeleton First dinosaur identified from Venezuela

Perijasaurus

P. lapaz

Cesar Department, Colombia

Partial dorsal vertebra Previously known as the "Cesar sauropod", and was the first dinosaur discovered in Colombia

Tachiraptor

T. admirabilis Venezuela A tibia and ischium

Regional correlations

edit
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)
[5][6][7][8]
2.6 Pliocene
 
Pliocene volcanism
Andean orogeny 3
GABI
Subachoque
5.3 Messinian Andean orogeny 3
Foreland
Marichuela Caimán Honda [7][9]
13.5 Langhian Regional flooding León hiatus Caja León Lacustrine (León) 400 m (1,300 ft)
(León)
Seal [8][10]
16.2 Burdigalian Miocene inundations
Andean orogeny 2
C1 Carbonera C1 Ospina Proximal fluvio-deltaic (C1) 850 m (2,790 ft)
(Carbonera)
Reservoir [9][8]
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 [6][9]
25 C6 Carbonera C6 Distal fluvio-lacustrine (C6) Seal
28 Early Oligocene C7 C7 Pepino Gualanday Proximal deltaic-marine (C7) Reservoir [6][9][11]
32 Oligo-Eocene C8 Usme C8 onlap Marine-deltaic (C8) Seal
Source
[11]
35 Late Eocene
 
Mirador Mirador Coastal (Mirador) 240 m (790 ft)
(Mirador)
Reservoir [8][12]
40 Middle Eocene Regadera hiatus
45
50 Early Eocene
 
Socha Los Cuervos Deltaic (Los Cuervos) 260 m (850 ft)
(Los Cuervos)
Seal
Source
[8][12]
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 [5][6][9][8][13]
65 Maastrichtian
 
KT extinction Catatumbo Guadalupe Monserrate Deltaic-fluvial (Guadalupe) 750 m (2,460 ft)
(Guadalupe)
Reservoir [5][8]
72 Campanian End of rifting Colón-Mito Juan [8][14]
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 [5][8][15]
93 Cenomanian
 
Rift 2
100 Albian Une Une Caballos Deltaic (Une) 500 m (1,600 ft)
(Une)
Reservoir [9][15]
113 Aptian
 
Capacho Fómeque Motema Yaví Open marine (Fómeque) 800 m (2,600 ft)
(Fómeque)
Source (Fóm) [6][8][16]
125 Barremian High biodiversity Aguardiente Paja Shallow to open marine (Paja) 940 m (3,080 ft)
(Paja)
Reservoir [5]
129 Hauterivian
 
Rift 1 Tibú-
Mercedes
Las Juntas hiatus Deltaic (Las Juntas) 910 m (2,990 ft)
(Las Juntas)
Reservoir (LJun) [5]
133 Valanginian Río Negro Cáqueza
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 Jordán Arcabuco Buenavista
Saldaña Alluvial, fluvial (Buenavista) 110 m (360 ft)
(Buenavista)
"Jurassic" [9][18]
150 Early-Mid Jurassic
 
Passive margin 2 La Quinta
Noreán
hiatus Coastal tuff (La Quinta) 100 m (330 ft)
(La Quinta)
[19]
201 Late Triassic
 
Mucuchachi Payandé [9]
235 Early Triassic
 
Pangea hiatus "Paleozoic"
250 Permian
 
300 Late Carboniferous
 
Famatinian orogeny Cerro Neiva
()
[20]
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)
[17][21][22][23][24]
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
()
[25][26][27]
488 Late Cambrian
 
Regional intrusions Chicamocha
(490-515)
Quetame
()
Ariarí
()
SJ del Guaviare
(490-590)
San Isidro
()
[28][29]
515 Early Cambrian Cambrian explosion [27][30]
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 [31][32]
600 Neoproterozoic Cariri Velhos orogeny Bucaramanga
(600-1400)
pre-Guaviare [28]
800
 
Snowball Earth [33]
1000 Mesoproterozoic
 
Sunsás orogeny Ariarí
(1000)
La Urraca
(1030-1100)
[34][35][36][37]
1300 Rondônia-Juruá orogeny pre-Ariarí Parguaza
(1300-1400)
Garzón
(1180-1550)
[38]
1400
 
pre-Bucaramanga [39]
1600 Paleoproterozoic Maimachi
(1500-1700)
pre-Garzón [40]
1800
 
Tapajós orogeny Mitú
(1800)
[38][40]
1950 Transamazonic orogeny pre-Mitú [38]
2200 Columbia
2530 Archean
 
Carajas-Imataca orogeny [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

edit

Notes

edit
  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 ANH in 2009[44]

References

edit
  1. ^ Barret et al., 2008, p.164
  2. ^ a b c Barret et al., 2014
  3. ^ a b Rincón AF, Raad Pájaro DA, Jiménez Velandia HF, Ezcurra MD, Wilson Mantilla JA (2022). "A sauropod from the Lower Jurassic La Quinta Formation (Dept. Cesar, Colombia) and the initial diversification of eusauropods at low latitudes". Journal of Vertebrate Paleontology. 42 (1): e2077112. Bibcode:2022JVPal..42E7112R. doi:10.1080/02724634.2021.2077112. S2CID 251501541.
  4. ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607
  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

edit

Maps

edit