Siamaná Formation
{{Short description|Geologic formation in Colombia}}
{{Infobox rockunit
| name = Siamaná Formation
| period = Chattian
| age = Mid-Late Oligocene
~{{fossil range|28|23}}
| image =
| imagesize =
| caption =
| type = Geological formation
| prilithology = Conglomerate
| otherlithology = Limestone
| unitof = Cocinetas Basin
| subunits =
| underlies = Uitpa Formation
| overlies = Macarao Formation
| thickness = {{convert|430|m|ft|abbr=on}}
| area =
| map = {{Location map | Colombia La Guajira Department
| relief = 1
| width = 250
| lat_deg = 11.946800
| lon_deg = -71.3321833
| float = center
| mark = Orange pog.svg
| marksize = 12
| caption =
}}
| map_caption = Type locality of the formation in La Guajira
| location =
| coordinates = {{coord|11|58|00|N|71|22|43|W|display=inline,title}}
| region = La Guajira
Caribbean region
| country = Colombia
| extent =
| namedfor = Siamaná
| namedby = Renz
| year_ts = 1960
| location_ts = Uribia
| coordinates_ts = {{coord|11|58|00|N|71|22|43|W|display=inline}}
| paleocoordinates_ts =
| region_ts = La Guajira
| country_ts = Colombia
| thickness_ts =
}}
The Siamaná Formation ({{langx|es|Formación Siamaná}}, E3s) is a fossiliferous geological formation of the Cocinetas Basin in the northernmost department of La Guajira. The formation consists of conglomerates and limestones. The Siamaná Formation dates to the Paleogene period; Middle to Late Oligocene epoch, corresponding to the Deseadan in the SALMA classification.
Etymology
The formation was defined by Renz in 1960 and named after the village of Siamaná.Moreno et al., 2015, p.7
Description
= Lithologies =
The Siamaná Formation consists of conglomerates and thick carbonates.Hendy et al., 2015, p.47
= Stratigraphy and depositional environment =
The Siamaná Formation, with a maximum thickness of {{convert|430|m|ft}}, overlies the Macarao Formation and is overlain by the Uitpa Formation. The age has been estimated to be Middle to Late Oligocene, corresponding to the Deseadan in the SALMA classification. The depositional environment has been interpreted as shallow marine.Rodríguez & Londoño, 2002, p.132
= Petroleum geology =
The Siamaná Formation is a reservoir and seal rock formation in the Guajira Basin.ANH, 2010
{{clear}}
= Fossil content =
| class="wikitable sortable mw-collapsible" width=100%
! Group ! Fossils ! Notes | ||
| style="background-color: {{period color|chattian}};" | Invertebrates | Mimachlamys canalis, Ostrea sp. | {{center|Hendy et al., 2015, p.50}} |
{{clear}}
See also
{{Portal|Colombia|Geology|Paleontology}}
:{{icon|FAC}} Geology of the Eastern Hills
:{{icon|GAN}} Cesar-Ranchería Basin
:{{icon|GAN}} Honda Group
:{{icon|Start}} Abanico, Castillo, Chota, Loreto, Soncco, Usme Formations
:{{icon|Start}} Tinguiririca fauna
{{clear}}
References
{{reflist|20em}}
= Bibliography =
== Local geology ==
- {{citation |last=ANH |year=2010 |title=Guajira Basin - Colombia Open Round 2010 |url=http://www.anh.gov.co/Informacion-Geologica-y-Geofisica/Estudios-Integrados-y-Modelamientos/Presentaciones%20y%20Poster%20Tcnicos/Guajira%20(pdf)-Ronda%20Colombia%202010.pdf |publisher=ANH |pages=1 |accessdate=2017-08-30}}
- {{citation |last1=Moreno |first1=F. |last2=Hendy |first2=A.J.W. |last3=Quiroz |first3=L. |last4=Hoyos |first4=N. |last5=Jones |first5=D.S. |last6=Zapata |first6=V. |last7=Zapata |first7=S. |last8=Ballen |first8=G.A. |last9=Cadena, A.L. Cárdenas, J.D. Carrillo Briceño, J.D. Carrillo, D. Delgado Sierra, J. Escobar, J.I. Martínez, C. Martínez, C. Montes, J. Moreno, N. Pérez, R. Sánchez, C. Suárez, M.C. Vallejo Pareja, C. Jaramillo |first9=Edwin |year=2015 |title=Revised stratigraphy of Neogene strata in the Cocinetas Basin, La Guajira, Colombia |url=http://wwwprof.uniandes.edu.co/~cmontes/CamiloMontes/Publications_files/moreno_etal_2015_Guajira__stratigraphy.pdf |journal=Swiss Journal of Palaeontology |volume=134 |pages=5–43 |doi=10.1007/s13358-015-0071-4 |bibcode=2015SwJP..134....5M |accessdate=2017-08-08}}
- {{citation |last1=Rodríguez |first1=Gabriel |last2=Londoño |first2=Ana Cristina |year=2002 |title=Mapa geológico del Departamento de La Guajira - 1:250,000 |url=https://www.researchgate.net/publication/270882602 |publisher=INGEOMINAS |pages=1–259 |accessdate=2017-08-08}}
== Paleontology ==
- {{citation |last1=Hendy |first1=Austin J.W. |last2=Jones |first2=Douglas S. |last3=Moreno |first3=Federico |last4=Zapata |first4=Vladimir |author5-link=Carlos Jaramillo (geologist) |last5=Jaramillo |first5=Carlos |year=2015 |title=Neogene molluscs, shallow marine paleoenvironments, and chronostratigraphy of the Guajira Peninsula, Colombia |url=https://www.stri.si.edu/sites/publications/PDFs/Hendy_2015_Castilletes_molluscs.pdf |journal=Swiss Journal of Palaeontology |volume=134 |pages=45–75 |doi=10.1007/s13358-015-0074-1 |bibcode=2015SwJP..134...45H |accessdate=2017-08-08}}
== Maps ==
- {{citation |last1=Zuluaga |first1=Carlos A. |last2=Ochoa |first2=Alberto |last3=Muñoz |first3=Carlos A. |last4=Dorado |first4=Camilo E. |last5=Guerrero |first5=Nathalia M. |last6=Martínez |first6=Ana M. |last7=Medina |first7=Paula A. |last8=Ocampo |first8=Edgar F. |last9=Pinilla and Paula A. Ríos, Bibiana P. Rodríguez, Edward A. Salazar, Vladimir L. Zapata |first9=Alejandro |year=2008 |title=Plancha 3 - Puerto Estrella - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QVk94Yi03VkJxQm8 |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{citation |last1=Zuluaga |first1=Carlos A. |last2=Ochoa |first2=Alberto |last3=Muñoz |first3=Carlos A. |last4=Dorado |first4=Camilo E. |last5=Guerrero |first5=Nathalia M. |last6=Martínez |first6=Ana M. |last7=Medina |first7=Paula A. |last8=Ocampo |first8=Edgar F. |last9=Pinilla and Paula A. Ríos, Bibiana P. Rodríguez, Edward A. Salazar, Vladimir L. Zapata |first9=Alejandro |year=2008 |title=Plancha 5 - Bahía Portete - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QbzhZdFA2eXcxdjQ |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{citation |last1=Zuluaga |first1=Carlos A. |last2=Ochoa |first2=Alberto |last3=Muñoz |first3=Carlos A. |last4=Dorado |first4=Camilo E. |last5=Guerrero |first5=Nathalia M. |last6=Martínez |first6=Ana M. |last7=Medina |first7=Paula A. |last8=Ocampo |first8=Edgar F. |last9=Pinilla and Paula A. Ríos, Bibiana P. Rodríguez, Edward A. Salazar, Vladimir L. Zapata |first9=Alejandro |year=2008 |title=Plancha 10 - Rancho Grande - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QekhPeU95UXluWmM |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
- {{citation |last1=Zuluaga |first1=Carlos A. |last2=Ochoa |first2=Alberto |last3=Muñoz |first3=Carlos A. |last4=Dorado |first4=Camilo E. |last5=Guerrero |first5=Nathalia M. |last6=Martínez |first6=Ana M. |last7=Medina |first7=Paula A. |last8=Ocampo |first8=Edgar F. |last9=Pinilla and Paula A. Ríos, Bibiana P. Rodríguez, Edward A. Salazar, Vladimir L. Zapata |first9=Alejandro |year=2008 |title=Plancha 10bis - Rancho Grande - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QbjBhTUNNYXRpbzQ |publisher=INGEOMINAS |pages=1 |accessdate=2017-06-06}}
{{DEFAULTSORT:Siamana Formation}}
Category:Geologic formations of Colombia
Category:Oligocene Series of South America
Category:Conglomerate formations
Category:Shallow marine deposits
Category:Reservoir rock formations
Category:Fossiliferous stratigraphic units of South America