| 释义 |
- Definition
- Description Lithologies Stratigraphy and depositional environment
- Outcrops
- Regional correlations
- See also
- References Bibliography Maps
- External links
{{Infobox rockunit
| name = Rosablanca Formation
| period = Valanginian
| age = Valanginian
~{{fossil range|136|133}}
| image =
| imagesize =
| caption =
| type = Geological formation
| prilithology = Sandstone
| otherlithology = Shale
| unitof =
| subunits =
| underlies = Paja Fm., Ritoque Fm.
| overlies = Cumbres Fm., Girón Fm., Los Medios Fm.
| thickness = ~{{convert|470|m|ft|abbr=on}}
| area =
| map =
| location
| coordinates = {{coord|4|27|07|N|74|03|20|W|display=inline,title}}
| region = Altiplano Cundiboyacense
Eastern Ranges, Andes
| country = {{COL}}
| extent =
| namedfor =
| namedby = Wheeler
| year_ts = 1929
| location_ts = Mesa de Los Santos
| coordinates_ts = {{coord|4|27|07|N|74|03|20|W|display=inline}}
| paleocoordinates_ts =
| region_ts = Boyacá, Santander
| country_ts = {{COL}}
| thickness_ts =
}}The Rosablanca Formation ({{lang-es|Formación Rosablanca}}, Kir) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes and the Middle Magdalena Basin. The formation consists of grey limestones, dolomites and shales with at the upper part sandstones. The formation dates to the Early Cretaceous period; Valanginian epoch and has a thickness of {{convert|425|m|ft}} in the valley of the Sogamoso River. Definition The formation was first defined by Wheeler in 1929.[1] Description Lithologies The Rosablanca Formation is characterised by a sequence of grey limestones, dolomites and shales with a maximum thickness of {{convert|425|m|ft}} in the Sogamoso River valley.[1] Fossils of Diaulax rosablanca have been found in and named after the Rosablanca Formation.[2] In 2019, fossils of Sellithyris elizabetha were described from the formation.[3] Stratigraphy and depositional environment The Rosablanca Formation overlies the Arcabuco Formation and is overlain by the Ritoque Formation. The age has been estimated to be Valanginian. Stratigraphically, the formation is time equivalent with the Macanal Formation.[1] Outcrops {{Location map | Colombia Santander Department
| relief = 1
| width = 250
| lat_deg = 6.253664
| lon_deg = -74.341091
| label =
| float = left
| position = right
| mark = Green pog.svg
| marksize = 12
| caption = Type locality of the Rosablanca Formation in Santander
}}The Rosablanca Formation is found, apart from its type locality on the Mesa de Los Santos, Santander, in Boyacá and the Middle Magdalena Basin. {{clearleft}} Regional correlations {{Cretaceous stratigraphy of the central Colombian Eastern Ranges}} See also {{portal|Colombia|Geology|Prehistory of South America|Cretaceous}}{{icon|FAC}} Geology of the Eastern Hills {{icon|B}} Geology of the Ocetá Páramo {{icon|C}} Geology of the Altiplano Cundiboyacense {{clearboth}} References 1. ^1 2 Galvis & Valencia, 2009, p.17
2. ^Gómez et al., 2015
3. ^Rojas & Sandy, 2019
Bibliography - {{cite LSA |last=Galvis Arenas |first=Beatriz Elena |last2=Valencia Escobar |first2=José Leonardo |year=2009 |title=Contribución en la determinación de los posibles paleoambientes de las rocas Cretáceas Tempranas sobre la vía Tunja-Villa de Leyva (entre Alto del Arrayán - Peaje Sáchica) y sectores aledaños, departamento de Boyacá |publisher=Universidad de Caldas |pages=1–127}}
- {{cite LSA |last=Gómez Cruz |first=Arley de Jesús |last2=Bermúdez |first2=Hermann D. |last3=Vega |first3=Francisco J. |year=2015 |title=A new species of Diaulax Bell, 1863 (Brachyura: Dialucidae) in the Early Cretaceous of the Rosablanca Formation, Colombia |url=http://boletinsgm.igeolcu.unam.mx/bsgm/index.php/component/content/article/248-sitio/articulos/cuarta-epoca/6701/1225-6701-8-gomez |journal=Boletín de la Sociedad Geológica Mexicana |volume=67 |pages=103-112 |accessdate=2017-04-04}}
- {{cite LSA |last=Rojas |first=Alexis |last2=Sandy |first2=Michael R. |year=2019 |title=Early Cretaceous (Valanginian) brachiopods from the Rosablanca Formation, Colombia, South America: Biostratigraphic significance and paleogeographic implications |url=https://www.researchgate.net/publication/329745305_Early_Cretaceous_Valanginian_brachiopods_from_the_Rosablanca_Formation_Colombia_South_America_Biostratigraphic_significance_and_paleogeographic_implications |journal=Cretaceous Research |volume=96 |pages=184–195 |accessdate=2019-02-11}}
- {{cite LSA |last=Villamil |first=Tomas |year=2012 |title=Chronology Relative Sea Level History and a New Sequence Stratigraphic Model for Basinal Cretaceous Facies of Colombia |publisher=Society for Sedimentary Geology (SEPM) |pages=161–216}}
Maps - {{cite LSA |last=Bernal Vargas |first=Luis Enrique |last2=Mantilla Figueroa |first2=Luis Carlos |year=2006 |title=Plancha 85 - Simití - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QMzZHTS1Pa1pNb1k |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Bernal Vargas |first=Luis Enrique |last2=Mantilla Figueroa |first2=Luis Carlos |year=2006 |title=Plancha 96 - Bocas del Rosario - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17Qd3VvbUUyV0lfTEE |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Vargas |first=Rodrigo |last2=Arias |first2=Alfonso |year=2009 |title=Plancha 97 - Cáchira - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QV0ZuemdEREpzVE0 |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Beltrán |first=Alejandro |last2=Quintero |first2=Claudia I. |year=2008 |title=Plancha 119 - Barrancabermeja - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QU051SnVEdmRPRmM |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Ward |first=Dwight E. |last2=Goldsmith |first2=Richard |last3=Jimeno |first3=Andrés |last4=Cruz |first4=Jaime |last5=Restrepo |first5=Hernán |last6=Gómez |first6=Eduardo |year=2010 |title=Plancha 120 - Bucaramanga - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QdlNUbTlLbG92dk0 |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Beltrán |first=Alejandro |last2=Lancheros |first2=José Alfredo |last3=López |first3=Carolina |last4=Chaquea |first4=Claudia |last5=Patiño |first5=Alejandro |last6=Guerra |first6=Angela |last7=Cabrera |first7=Julio C. |last8=Quintero |first8=Claudia I. |last9=Molano |first9=Simón Emilio |year=2008 |title=Plancha 134 - Puerto Parra - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QWGJzT3I3WGh6Nnc |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Angarita |first=Leonidas |last2=Carrillo |first2=Víctor |last3=Castro |first3=Alfonso |last4=Daconte |first4=Rommel |last5=Niño |first5=Mario |last6=Pulido |first6=Orlando G. |last7=Rodríguez |first7=J. Antonio |last8=Royero |first8=José María |last9=Salinas, Carlos Ulloa and Rodrigo Vargas |first9=Rosalba |year=2009 |title=Plancha 135 - San Gil - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QWmI0U0IxSEptOWM |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Beltrán |first=Alejandro |last2=Lancheros |first2=José Alfredo |last3=López |first3=Carolina |last4=Chaquea |first4=Claudia |last5=Patiño |first5=Alejandro |last6=Guerra |first6=Angela |last7=Cabrera |first7=Julio C. |last8=Quintero |first8=Claudia I. |last9=Molano |first9=Simón Emilio |year=2008 |title=Plancha 150 - Cimitarra - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QbmV0eldmTDRvdWc |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Pulido González |first=Orlando |year=2009 |title=Plancha 151 - Charalá - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QVnhHc2E1d1YxSHM |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Ulloa |first=Carlos E |last2=Rodríguez |first2=Erasmo |year=2009 |title=Plancha 170 - Vélez - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QcGU2Z19qSDBTZ28 |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Renzoni |first=Giancarlo |last2=Rosas |first2=Humberto |year=2009 |title=Plancha 171 - Duitama - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QVU40dC0wUzhzTkk |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Fuquen M. |first=Jaime A |last2=Osorno M |first2=José F. |year=2009 |title=Plancha 190 - Chiquinquirá - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QVEYzMnV1ekNxTDQ |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{cite LSA |last=Renzoni |first=Giancarlo |last2=Rosas |first2=Humberto |last3=Etayo Serna |first3=Fernando |year=1998 |title=Plancha 191 - Tunja - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QQzhBTXNwUWJuUDg |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
External links - {{cite LSA |last=Gómez |first=J. |last2=Montes |first2=N.E. |last3=Nivia |first3=Á. |last4=Diederix |first4=H. |year=2015 |title=Plancha 5-09 del Atlas Geológico de Colombia 2015 – escala 1:500,000 |url=https://www.researchgate.net/publication/309533589_Plancha_5-09_del_Atlas_Geologico_de_Colombia_2015 |publisher=Servicio Geológico Colombiano |pages=1 |accessdate=2017-03-16}}
{{Colombian emeralds|state=expanded}} 10 : Geologic formations of Colombia|Cretaceous Colombia|Lower Cretaceous Series of South America|Valanginian Stage|Limestone formations|Shallow marine deposits|Colombian emeralds|Altiplano Cundiboyacense|Geography of Boyacá Department|Geography of Santander Department |