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{{Infobox rockunit
{{Infobox rockunit
| name = Capitan Formation
| name = Capitan Formation
| image =
| image = El Capitan 2005.jpg
| caption = The Capitan Formation underlies [[El Capitan (Texas)|El Capitan]] in [[Guadalupe Mountains National Park]].
⚫
| caption =
| type = [[Formation (stratigraphy)|Formation]]
| type = [[Formation (stratigraphy)|Formation]]
| age = [[Permian]]
| age = [[Guadalupian]]
| period = Guadalupian
| prilithology =
| prilithology = [[Limestone]]
| otherlithology =
| otherlithology = [[Dolomite]]
| namedfor =
| namedby =
| namedfor = El Capitan Peak
| region = [[Texas]]
| namedby = G.B. Richardson
⚫
| year_ts = 1904
| region = [[Texas]]<br/>[[New Mexico]]
| country = [[United States]]
| country = [[United States]]
| coordinates =
| coordinates = {{coord|31.8773|N|104.8668|W|display:inline}}
| unitof =
| unitof =
| subunits =
| subunits =
| underlies =
| underlies = [[Castile Formation]]
| overlies =
| overlies = [[Goat Seep Dolomite]]
| thickness =
| thickness = {{convert|1800|ft|m|abbr=on}}
| extent =
| extent =
| area =
| area =
| map =
| map = {{Location map+ | United States#Texas
| relief = 1
| width = 250
| float = center
| places =
{{Location map~ | United States#Texas
| lat_deg = 31.8773
| lon_deg = -104.8668
| mark = Lightgreen pog.svg
| marksize = 12
}}
}}
| map_caption =
| map_caption =
}}
}}


The '''Capitan Formation''' is a [[Formation (geology)|geologic formation]] in [[Texas]]. It preserves [[fossils]] dating back to the [[Permian]] [[Period (geology)|period]].
The '''Capitan Formation''' is a [[Formation (geology)|geologic formation]] found in western [[Texas]] and southeastern [[New Mexico]]. It is a [[fossil]]ized [[reef]] dating to the [[Guadalupian]] [[Age (geology)|Age]] of the [[Permian]] [[Period (geology)|period]].

The formation underlies [[El Capitan (Texas)|El Capitan]] in [[Guadalupe Mountains National Park]],<ref name="GMNP">"Geologic Formations." Gualadupe Mountains National Park</ref> and has been described as "the largest, best-preserved, most accessible, and most intensively studied [[Paleozoic]] reef complex in the world."<ref name="kues-giles-2004-125">Kues and Giles 2004, p.125</ref>

==History of investigation==
The formation was first named by G.B. Richardson in 1904.<ref name="richardson-1904">{{cite journal |last1=Richardson |first1=G.B. |year=1904 |title=Report of a reconnaissance in Trans-Pecos Texas north of the Texas and Pacific Railway |journal=University of Texas Mineral Survey Bulletin |volume=9 |url=http://hdl.handle.net/2152/24408 |accessdate=19 September 2020}}</ref>

==Description==
The formation consists of compact, massive, light grey to white [[limestone]] with minor [[dolomite (rock)|dolomite]]. Its total thickness is {{convert|1000-2000|feet|meters|sp=us}}.<ref name="king-1948">King 1948</ref>


==See also==
==See also==
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* [[List of fossiliferous stratigraphic units in Texas]]
* [[List of fossiliferous stratigraphic units in Texas]]
* [[Paleontology in Texas]]
* [[Paleontology in Texas]]

==Footnotes==
{{Reflist}}


==References==
==References==
* {{cite journal |last1=King |first1=Philip B. |title=Geology of the Southern Guadalupe Mountains, Texas |journal=U.S. Geological Survey Professional Paper |date=1948 |volume=215 |doi=10.3133/pp215}}
* {{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= Various Contributors to the Paleobiology Database|url= http://www.fossilworks.org/|accessdate= 8 July 2014|url-status= dead|archiveurl= https://web.archive.org/web/20140731140924/http://fossilworks.org/|archivedate= 31 July 2014}}
* {{cite encyclopedia |last1=Kues |first1=B.S. |last2=Giles |first2=K.A. |year=2004 |title=The late Paleozoic Ancestral Rocky Mountain system in New Mexico |editor1-last=Mack |editor1-first=G.H. |editor2-last=Giles |editor2-first=K.A. |encyclopedia=The geology of New Mexico. A geologic history: New Mexico Geological Society Special Volume 11 |pages=95–136 |isbn=9781585460106}}
* {{cite web |title=Geologic Formations |url=https://www.nps.gov/gumo/learn/nature/geologicformations.htm |website=Guadalupe Mountains National Park, Texas |publisher=National Park Service |accessdate=19 September 2020}}


[[Category:Permian geology of Texas]]
[[Category:Permian geology of Texas]]

Revision as of 23:12, 19 September 2020

Capitan Formation
Stratigraphic range: Guadalupian
The Capitan Formation underlies El Capitan in Guadalupe Mountains National Park.
TypeFormation
UnderliesCastile Formation
OverliesGoat Seep Dolomite
Thickness1,800 ft (550 m)
Lithology
PrimaryLimestone
OtherDolomite
Location
Coordinates31°52′38″N 104°52′00″W / 31.8773°N 104.8668°W / 31.8773; -104.8668
RegionTexas
New Mexico
CountryUnited States
Type section
Named forEl Capitan Peak
Named byG.B. Richardson
Year defined1904
Capitan Formation is located in the United States
Capitan Formation
Capitan Formation (the United States)
Capitan Formation is located in Texas
Capitan Formation
Capitan Formation (Texas)

The Capitan Formation is a geologic formation found in western Texas and southeastern New Mexico. It is a fossilized reef dating to the Guadalupian Age of the Permian period.

The formation underlies El Capitan in Guadalupe Mountains National Park,[1] and has been described as "the largest, best-preserved, most accessible, and most intensively studied Paleozoic reef complex in the world."[2]

History of investigation

The formation was first named by G.B. Richardson in 1904.[3]

Description

The formation consists of compact, massive, light grey to white limestone with minor dolomite. Its total thickness is 1,000–2,000 feet (300–610 m).[4]

See also

Footnotes

  1. ^ "Geologic Formations." Gualadupe Mountains National Park
  2. ^ Kues and Giles 2004, p.125
  3. ^ Richardson, G.B. (1904). "Report of a reconnaissance in Trans-Pecos Texas north of the Texas and Pacific Railway". University of Texas Mineral Survey Bulletin. 9. Retrieved 19 September 2020.
  4. ^ King 1948

References

  • King, Philip B. (1948). "Geology of the Southern Guadalupe Mountains, Texas". U.S. Geological Survey Professional Paper. 215. doi:10.3133/pp215.
  • Kues, B.S.; Giles, K.A. (2004). "The late Paleozoic Ancestral Rocky Mountain system in New Mexico". In Mack, G.H.; Giles, K.A. (eds.). The geology of New Mexico. A geologic history: New Mexico Geological Society Special Volume 11. pp. 95–136. ISBN 9781585460106.
  • "Geologic Formations". Guadalupe Mountains National Park, Texas. National Park Service. Retrieved 19 September 2020.


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