| 释义 |
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{{about|the formation in Colombia and Venezuela|the amber-bearing Mexican formation|La Quinta Formation, Mexico}}{{Infobox rockunit
| name = La Quinta Formation
| image = La Quinta Formation near its type section the Venezuelan Andes.JPG
| caption = The La Quinta Formation near its type section in Táchira, Venezuela
| type = Geological formation
| period = Hettangian
| age = Hettangian
{{fossil range|201.46|200.36}}
| prilithology = Sandstone
| otherlithology = Tuff, conglomerate
| namedfor = La Quinta quarry
| namedby =
| region = Cesar-Ranchería & Maracaibo Basins
Serranía del Perijá & Cordillera de Mérida
| country = {{COL}}
{{VEN}}
| coordinates = {{Coord|8.15|N|72.02|W|display=inline,title}}
| paleocoordinates = {{coord|0.1|N|42.7|W|display=inline}}
| unitof =
| subunits =
| underlies = Río Negro Formation
| overlies = Mucuchachi Formation
| thickness = up to {{convert|11000|ft|m|abbr=on}}
| extent =
| area =
| map = {{Location map+ | Venezuela
| relief = 1
| width = 250
| float = center
| places =
| lat_deg = 8.15
| lon_deg = -72.02
| mark = Blue pog.svg
| marksize = 12
}}
| map_caption =
}}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] and Tachiraptor, are among the fossils that have been recovered from the formation.[3] Fossil associations suggested that the La Quinta Formation was of Early to Middle Jurassic age,[4] while a more recent estimate based on U–Pb zircon analysis demonstrates that the bonebed has a maximum depositional age of 200.91+0.55 Ma.[5] See also {{Portal|Colombia|Geology|Jurassic|Paleontology|Dinosaurs|Venezuela|Prehistory of South America}}- List of dinosaur-bearing rock formations
- List of stratigraphic units with few dinosaur genera
References 1. ^Barret et al., 2008, p.164
2. ^Barret et al., 2014
3. ^Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607
4. ^Barret et al., 2008, p.175
5. ^La Quinta quarry at Fossilworks.org
Bibliography - {{cite LSA |last=Barrett |first=Paul M. |last2=Butler |first2=Richard J. |last3=Mundil |first3=Roland |last4=Scheyer |first4=Torsten M. |last5=Irmis |first5=Randall B. |last6=Sánchez-Villagra |first6=Marcelo R. |year=2014 |title=A palaeoequatorial ornithischian and new constraints on early dinosaur diversification |url=http://rspb.royalsocietypublishing.org/content/281/1791/20141147.full.pdf |journal=Proceedings of the Royal Society B |publisher=Royal Society |volume=281 |pages=1–7 |accessdate=2018-08-18}}
- Barrett, P. M., R. J. Butler, S. C. Moore-Fay, F. E. Novas, J. M. Moody, J. M. Clark, and M. R. Sänchez-Villagra. ‘Dinosaur Remains from the La Quinta Formation (Lower or Middle Jurassic) of the Venezuelan Andes’. Paläontologische Zeitschrift 82, no. 2 (2008): 163–177.
- Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. {{ISBN|0-520-24209-2}}.
Maps - {{cite LSA |last=Colmenares |first=Fabio |last2=Mesa |first2=Milena |last3=Roncancio |first3=Jairo |last4=Arciniegas |first4=Edgar |last5=Pedraza |first5=Pablo |last6=Cardona |first6=Agustín |last7=Silva |first7=César |last8=Romero |first8=Jhoamna |last9=Alvarado and Oscar Romero, Felipe Vargas, Carlos Santamaría |first9=Sonia |year=2007 |title=Plancha 14 - Albania - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QLU1TNjFPQzlvMlk |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Colmenares |first=Fabio |last2=Mesa |first2=Milena |last3=Roncancio |first3=Jairo |last4=Arciniegas |first4=Edgar |last5=Pedraza |first5=Pablo |last6=Cardona |first6=Agustín |last7=Silva |first7=César |last8=Romero |first8=Jhoamna |last9=Alvarado and Oscar Romero, Felipe Vargas, Carlos Santamaría |first9=Sonia |year=2007 |title=Plancha 21 - Fonseca - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QQWNHcVRhekU5NzQ |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Colmenares |first=Fabio |last2=Mesa |first2=Milena |last3=Roncancio |first3=Jairo |last4=Arciniegas |first4=Edgar |last5=Pedraza |first5=Pablo |last6=Cardona |first6=Agustín |last7=Silva |first7=César |last8=Romero |first8=Jhoamna |last9=Alvarado and Oscar Romero, Felipe Vargas, Carlos Santamaría |first9=Sonia |year=2007 |title=Plancha 34 - Agustín Codazzi - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17Qejk4cG9vMUhNSzQ |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=González |first=Javier |last2=Clavijo |first2=Jairo |last3=Hernández |first3=Marina |last4=García |first4=Carlos |year=2002 |title=Plancha 40 - Bosconia - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QbldzVlgxaDhKbDg |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Hernández |first=Marina |last2=Clavijo |first2=Jairo |last3=González |first3=Javier |year=2001 |title=Plancha 47 - Chiriguaná - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QOWU4T0tneFVGMnM |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Hernández |first=Marina |last2=Clavijo |first2=Jairo |year=2008 |title=Plancha 48 - La Jagua de Ibirico - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QeGxwUUxmSHEwdm8 |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
17 : Geologic formations of Colombia|Geologic formations of Venezuela|Jurassic System of South America|Early Jurassic South America|Jurassic Colombia|Jurassic Venezuela|Hettangian Stage|Sandstone formations|Conglomerate formations|Tuff formations|Fossiliferous stratigraphic units of South America|Paleontology in Venezuela|Geography of Cesar Department|Geography of La Guajira Department|Cesar–Ranchería Basin|Geography of Zulia|Colombia–Venezuela border |