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C o o r d i n a t e s : 4 ° 3 0 ′ 47 ″ N 7 4 ° 5 2 ′ 32 ″ W / 4 . 5 1 3 0 6 ° N 7 4 . 8 7 5 5 6 ° W / 4.51306; -74.87556
F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
Fossiliferous geological formation of the Colombian Andes
The Hondita Formation (Spanish : Formación Hondita , Ksh) is a fossiliferous geological formation of the Upper Magdalena Valley (VSM) and surrounding Central and Eastern Ranges of the Colombian Andes , extending from Cundinamarca in the north to Huila and easternmost Tolima in the south. The lowermost unit of the Güagüaquí Group , a sequence of sandy limestones and shales , dates to the Late Cretaceous period; Turonian epoch, and has a maximum thickness of 90 metres (300 ft ).
Fossils of Yaguarasaurus columbianus , said to be found in the time-equivalent La Frontera Formation (listed as "La Frontera Member"), were actually recovered from the Hondita Formation as the stratigraphic unit present in the Quebradas El Ocal and Itaibe, Huila.
Etymology [ edit ]
The formation was named in 1966 by De Porta , named after Quebrada Hondita in Piedras , Tolima .[1]
Description [ edit ]
Lithologies [ edit ]
The Hondita Formation is characterised by a sequence of sandy limestones and shales with calcareous concretions up to 2 metres (6.6 ft ) in diameter.[2] The formation has provided fossils of Pachyrhizodus etayoi ,[3] Acanthoceras sp. , Rhynchostreon sp. near Aipe , Huila .[4]
Stratigraphy and depositional environment [ edit ]
The Hondita Formation is the lowermost unit of the Güagüaquí Group .[1] It is overlain by the Loma Gorda Formation and its base has not been observed. The age has been estimated on the basis of ammonites to be Turonian .[2] Stratigraphically, the formation is time equivalent with the lower parts of the Chipaque , La Luna and La Frontera Formations .[5] The formation was deposited in a relative highstand sequence with an oceanic oxygen depletion event, sharply marked in Colombia and characterised by the appearance of calcareous concretions with a thick pyrite rim.[6]
Yaguarasaurus [ edit ]
Fossils of Yaguarasaurus columbianus were described as coming from the "La Frontera Member", part of the "Villeta Formation", in the Quebrada El Ocal, 26 kilometres (16 mi ) southwest of Neiva , Huila ,[7] [8] and in the Quebrada Itaibe 78 kilometres (48 mi ) southwest of Neiva,[9] although in these areas the Hondita Formation is mapped.[10] [11]
Outcrops [ edit ]
Type locality of the Hondita Formation in Tolima
The type locality of the Hondita Formation is located in Piedras, Tolima .[1] Other outcrops of the Hondita Formation have been noted east of the Magdalena River northeast of Honda ,[12] west of Nariño ,[13] west across the Magdalena River in San Luis , Tolima ,[14] between the Tetuán and Saldaña Rivers west of Coyaima and east and west of Ataco ,[15] to the east of the Prado River reservoir ,[16] north and west of Aipe ,[17] surrounding Alpujarra , Tolima,[18] south of Palermo , Huila, displaced by the Baché Fault ,[19] east of Iquira ,[10] north of Yaguará ,[11] south of La Plata where the formation is cut by the Itaibe Fault ,[20] a small patch east of Gigante , Huila,[21] northwest and northeast of San Agustín ,[22] and north of Timaná surrounding the Magdalena River .[23]
Regional correlations [ edit ]
See also [ edit ]
Geology of the Eastern Hills
Geology of the Ocetá Páramo
Geology of the Altiplano Cundiboyacense
Geology of the Middle Magdalena Valley
References [ edit ]
^ a b c Acosta & Ulloa, 2002, p.23
^ a b Acosta & Ulloa, 2002, p.24
^ Páramo, 2001, p.68
^ Patarroyo, 2011
^ Acosta & Ulloa, 2002, p.22
^ Villamil, 2012, p.173
^ 'Yaguarasaurus columbianus' in the Paleobiology Database
^ Yaguarasaurus columbianus at Fossilworks .org
^ Páramo Fonseca, 2000, p.124
^ a b Plancha 344, 1999
^ a b Plancha 345, 1999
^ Plancha 207, 2010
^ Plancha 245, 1999
^ Plancha 264, 2002
^ Plancha 282, 1993
^ Plancha 283, 2009
^ Plancha 302, 1993
^ Plancha 303, 2002
^ Plancha 323, 1998
^ Plancha 366, 1998
^ Plancha 367, 2003
^ Plancha 388, 2002
^ Plancha 389, 2003
Bibliography [ edit ]
Acosta, Jorge E.; Ulloa, Carlos E. (2002), Mapa geológico del Departamento de Cundinamarca 1:250,000 - Memoria Explicativa , INGEOMINAS , pp. 1–108
Páramo Fonseca , María Euridice (2001), "Los peces de la familia Pachyrhizodontidae (Teleostei) del Turoniano del Valle Superior del Magdalena" , Boletín Geológico , 39 : 51–83, doi :10.32685/0120-1425/bolgeol39.1-3.2001.190
Páramo Fonseca , María Euridice (2000), "Yaguarasaurus columbianus (Reptilia, Mosasauridae), a primitive mosasaur from the Turonian (Upper Cretaceous) of Colombia" , Historical Biology , 14 (1–2): 121–131, Bibcode :2000HBio...14..121P , doi :10.1080/10292380009380560 , retrieved 2018-05-30
Patarroyo, Pedro (2011), "Sucesión de Amonitas del Cretácico Superior (Cenomaniano-Coniaciano) de la parte más alta de la Formación Hondita y de la Formación Loma Gorda en la Quebrada Bambucá, Aipe - Huila (Colombia)" (PDF) , Boletín de Geología, Universidad Nacional de Colombia , 33 : 69–92, retrieved 2017-03-31
Villamil, Tomas (2012), Chronology Relative Sea Level History and a New Sequence Stratigraphic Model for Basinal Cretaceous Facies of Colombia , Society for Sedimentary Geology (SEPM), pp. 161–216
Barrero L., Darío; Vesga O, Carlos J. (2009), Plancha 188 - La Dorada - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Barrero, Darío; Vesga, Carlos J. (2010), Plancha 207 - Honda - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Acosta, Jorge E.; Guatame, Rafael; Torres, Oscar; Solano, Frank (1999), Plancha 245 - Girardot - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Calcedo, Juan Carlos; Terraza, Roberto (2000), Plancha 264 - Espinal - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Carvajal, Cesar; Fuquen, Jaime; Gómez, Luis (1993), Plancha 282 - Chaparral - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Cossio, Ubaldo; Rodríguez, Gabriel; Rodríguez, Miguel (1995), Plancha 283 - Purificación - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Fuquen, Jaime; Rodríguez, Gabriel; Cossio, Ubaldo; Núñez, Alberto (1993), Plancha 302 - Aipe - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Acosta, Jorge; Caro, Pablo; Fuquen, Jaime; Osorno, José (2002), Plancha 303 - Colombia - 1:100,000 , INGEOMINAS , p. 1
Ferreira, Paulina; Núñez, Alberto; Rodríguez, Miguel (1998), Plancha 323 - Neiva - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Marquínez, Germán; Morales, C.; Núñez, Alberto (1999), Plancha 344 - Tesalia - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Velandia, F.; Morales, C.J.; Caicedo, J.C.; Núñez, Alberto (1999), Plancha 345 - Campoalegre - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Marquínez, Germán; Rodríguez, Yohana; Terraza, Roberto; Martínez, Mario (2003), Plancha 365 - Coconuco - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Rodríguez, Gabriel; Ferreira, Paulina; Velandia, Francisco; Núñez, Alberto (1998), Plancha 366 - Garzón - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Rodríguez, Gabriel; Zapata, Gilberto; Velázquez, M. (2003), Plancha 367 - Gigante - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Cárdenas, Jorge; Fuquen, Jaime; Núñez, Alberto (2002), Plancha 388 - Pitalito - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
Rodríguez, Gabriel; Zapata, Gilberto; Velázquez, M. (2003), Plancha 389 - Timaná - 1:100,000 , INGEOMINAS , p. 1 , retrieved 2017-06-06
External links [ edit ]
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Hondita_Formation&oldid=1233255281 "
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● T h i s p a g e w a s l a s t e d i t e d o n 8 J u l y 2 0 2 4 , a t 0 3 : 3 2 ( U T C ) .
● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
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