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Contents

   



(Top)
 


1 Etymology  





2 Description  



2.1  Lithologies  





2.2  Stratigraphy and depositional environment  





2.3  Yaguarasaurus  







3 Outcrops  





4 Regional correlations  





5 See also  





6 References  



6.1  Bibliography  



6.1.1  Maps  









7 External links  














Hondita Formation







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Coordinates: 4°3047N 74°5232W / 4.51306°N 74.87556°W / 4.51306; -74.87556
 

From Wikipedia, the free encyclopedia
 


Hondita Formation
Stratigraphic range: Turonian
~93–90 Ma

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TypeGeological formation
Unit ofGüagüaquí Group
UnderliesLoma Gorda Formation
Overliesnot observed
Thicknessup to 90 m (300 ft)
Lithology
PrimarySandy limestone, shale
OtherCalcareous concretions
Location
Coordinates4°30′47N 74°52′32W / 4.51306°N 74.87556°W / 4.51306; -74.87556
Approximate paleocoordinates3°00′S 52°00′W / 3.0°S 52.0°W / -3.0; -52.0
RegionUpper Magdalena Valley, Central & Eastern Ranges, Andes
Country Colombia
Type section
Named forQuebrada Hondita
Named byDe Porta
LocationPiedras, Tolima
Year defined1966
Coordinates4°30′47N 74°52′32W / 4.51306°N 74.87556°W / 4.51306; -74.87556
RegionCundinamarca, Huila, Tolima
Country Colombia

Paleogeography of Northern South America
90 Ma, by Ron Blakey

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]

Hondita Formation is located in Tolima Department
Hondita Formation
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]

Cretaceous stratigraphy of the central Colombian Eastern Ranges
Age Paleomap VMM Guaduas-Vélez W Emerald Belt Villeta anticlinal Chiquinquirá-
Arcabuco
Tunja-
Duitama
Altiplano Cundiboyacense El Cocuy
Maastrichtian Umir Córdoba Seca eroded Guaduas Colón-Mito Juan
Umir Guadalupe
Campanian Córdoba
Oliní
Santonian La Luna Cimarrona - La Tabla La Luna
Coniacian Oliní Villeta Conejo Chipaque
Güagüaquí Loma Gorda undefined La Frontera
Turonian Hondita La Frontera Otanche
Cenomanian Simití hiatus La Corona Simijaca Capacho
Pacho Fm. Hiló - Pacho Churuvita Une Aguardiente
Albian Hiló Chiquinquirá Tibasosa Une
Tablazo Tablazo Capotes - La Palma - Simití Simití Tibú-Mercedes
Aptian Capotes Socotá - El Peñón Paja Fómeque
Paja Paja El Peñón Trincheras Río Negro
La Naveta
Barremian
Hauterivian Muzo Cáqueza Las Juntas
Rosablanca Ritoque
Valanginian Ritoque Furatena Útica - Murca Rosablanca hiatus Macanal
Rosablanca
Berriasian Cumbre Cumbre Los Medios Guavio
Tambor Arcabuco Cumbre
Sources


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]

  1. ^ 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 columbianusatFossilworks.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]

    Maps[edit]

    External links[edit]


    Retrieved from "https://en.wikipedia.org/w/index.php?title=Hondita_Formation&oldid=1233255281"

    Categories: 
    Geologic formations of Colombia
    Cretaceous Colombia
    Upper Cretaceous Series of South America
    Turonian Stage
    Limestone formations
    Shale formations
    Open marine deposits
    Fossiliferous stratigraphic units of South America
    Paleontology in Colombia
    Geography of Cundinamarca Department
    Geography of Huila Department
    Geography of Tolima Department
    Magdalena River
    Hidden categories: 
    Pages using gadget WikiMiniAtlas
    Articles with short description
    Short description matches Wikidata
    Coordinates not on Wikidata
    Articles containing Spanish-language text
     



    This page was last edited on 8 July 2024, at 03:32 (UTC).

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