Hidalgo Formation: Difference between revisions

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Coordinates: 31°50′49″N 108°27′25″W / 31.847°N 108.457°W / 31.847; -108.457
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{{Short description|Geologic formation in New Mexico}}
{{db-author}}
{{Infobox rockunit
| name = Hidalgo Formation
| image =
| caption =
| type = [[Geological formation]]
| age = [[Maastrichtian]]<br />~{{fossil range|70.53|71.44}}
| period = Maastrichtian
| prilithology = [[Basalt]], [[andesite]]
| otherlithology = [[Volcaniclastics]], [[limestone]], [[shale]]
| namedfor = [[Hidalgo County, New Mexico]]
| namedby = S.G. Lasky
| year_ts = 1938
| region = [[New Mexico]]
| country = {{USA}}
| coordinates = {{coord|31.847|N|108.457|W|display=inline,title}}
| paleocoordinates =
| unitof =
| subunits =
| underlies = [[Rubio Peak Formation]]
| overlies = [[Ringbone Formation]], [[Skunk Ranch Formation]]
| thickness = {{convert|7500|feet|meters}}
| extent =
| area =
| map = {{Location map+ | United States#New Mexico
| relief = 1
| width = 250
| float = center
| places =
{{Location map~ | United States#New Mexico
| lat_deg = 31.847
| lon_deg = -108.457
| mark = Lightgreen pog.svg
| marksize = 12
}}
}}
| map_caption =
}}

The '''Hidalgo Formation''' is a geologic [[Formation (geology)|formation]] of [[Maastrichtian]] age (latest [[Cretaceous]])<ref name=MarvinEtal1978>{{cite journal |last1=Marvin |first1=R.F. |last2=Naeser |first2=C.W. |last3=Mehnert |first3=H.H. |title=Tabulation of radiometric ages--Including unpublished K-Ar and fission-track ages for rocks in southeastern Arizona and southwestern New Mexico |journal=New Mexico Geological Society Field Conference Series |date=1978 |volume=29 |pages=243-252 |url=https://nmgs.nmt.edu/publications/guidebooks/downloads/29/29_p0243_p0252.pdf |access-date=14 October 2021}}</ref> in southwestern [[New Mexico]].<ref>{{cite journal |last1=Lasky |first1=Samuel G. |title=Newly Discovered Section of Trinity Age in Southwestern New Mexico |journal=AAPG Bulletin |date=1938 |volume=22 |issue=5 |pages=524–540 |doi=10.1306/3D932F80-16B1-11D7-8645000102C1865D |language=en |issn=0149-1423}}</ref> It is of interest to geologists for the clues it preserves of the nature of [[Laramide]] deformation in the latest Cretaceous.<ref>{{cite journal |last1=Jennings |first1=George R. |last2=Lawton |first2=Timothy F. |last3=Clinkscales |first3=Christopher A. |title=Late Cretaceous U–Pb tuff ages from the Skunk Ranch Formation and their implications for age of Laramide deformation, Little Hatchet Mountains, southwestern New Mexico, U.S.A. |journal=Cretaceous Research |date=June 2013 |volume=43 |pages=18–25 |doi=10.1016/j.cretres.2013.02.001}}</ref>

==Description==
The formation is mostly [[basalt]]{{sfn|Lasky|1938}} or [[andesite]]<ref>{{cite journal |last1=Zeller |first1=R.A., Jr. |year=1970 |title=Geology of the Little Hatchet Mountains, Hidalgo and Grant Counties, New Mexico |journal=New Mexico Bureau of Mines and Mineral Resources Bulletin |volume=96 |url=https://geoinfo.nmt.edu/publications/monographs/bulletins/downloads/96/Bulletin96.pdf |accessdate=16 September 2020}}</ref> [[lava flow]]s, but with some interbedded [[breccia]] and [[pyroclastic rock]] and, in some locations, up to {{convert|200|ft||sp=us}} of [[limestone]] and [[shale]]. The formation rests [[Unconformity (geology)|unconformably]] on the [[Ringbone Formation]]{{sfn|Lasky|1938}} or [[Skunk Ranch Formation]],{{sfn|Jennings|Lawton|Clinkscales|2013}} and varies greatly in thickness, from {{convert|900 to 5000|feet||sp=us}}.{{sfn|Lasky|1938}} [[Argon-argon dating]] gives a consistent age between 70.53 and 71.44 million years.<ref>{{cite journal |last1=Young |first1=John R. |last2=McMillan |first2=Nancy J. |last3=Lawton |first3=Timothy F. |last4=Esser |first4=Richard P. |title=Volcanology, geochemistry and structural geology of the Upper Cretaceous Hidalgo Formation, southwestern New Mexico |journal=New Mexico Geological Society Field Conference Series |date=2000 |volume=51 |pages=149-156 |url=https://nmgs.nmt.edu/publications/guidebooks/downloads/51/51_p0149_p0156.pdf |access-date=14 October 2021}}</ref> The formation is overlain by the [[Rubio Peak Formation]].{{sfn|Jennings|Lawton|Clinkscales|2013}}

The formation is intepreted as a volcanic center located inland of the southwest coast of the Ringbone depositional basin{{sfn|Lasky|1938}} that erupted during Laramide tectonic deformation that partitioned the basin.<ref>{{cite journal |last1=Basabilbazo |first1=George |title=The Upper Cretaceous Ringbone Formation, Little Hatchet Mountains, southwestern New Mexico |journal=New Mexico Geological Society Field Conference Series |date=2000 |volume=51 |pages=203-210 |url=https://nmgs.nmt.edu/publications/guidebooks/downloads/51/51_p0203_p0210.pdf |access-date=14 October 2021}}</ref> It may correlate with the [[Salero Formation]] of southeastern [[Arizona]].<ref>* {{cite journal |last1=Hayes |first1=Philip Thayer |title=Cretaceous paleogeography of southeastern Arizona and adjacent areas |journal=U.S. Geological Survey Professional Paper |series=Professional Paper |date=1970 |volume=658-B |doi=10.3133/pp658B}}</ref>

==History of investigation==
The formation was first named the Hidalgo Volcanics by Samuel G. Lasky in 1978 for outcroups found throughout [[Hidalgo County, New Mexico]].{{sfn|Lasky|1938}}

== References ==
{{Reflist}}

[[Category:Cretaceous formations of New Mexico]]

Revision as of 22:11, 14 October 2021

Hidalgo Formation
Stratigraphic range: Maastrichtian
~70.53–71.44 Ma
↓
TypeGeological formation
UnderliesRubio Peak Formation
OverliesRingbone Formation, Skunk Ranch Formation
Thickness7,500 feet (2,300 m)
Lithology
PrimaryBasalt, andesite
OtherVolcaniclastics, limestone, shale
Location
Coordinates31°50′49″N 108°27′25″W / 31.847°N 108.457°W / 31.847; -108.457
RegionNew Mexico
Country United States
Type section
Named forHidalgo County, New Mexico
Named byS.G. Lasky
Year defined1938
Hidalgo Formation is located in the United States
Hidalgo Formation
Hidalgo Formation (the United States)
Hidalgo Formation is located in New Mexico
Hidalgo Formation
Hidalgo Formation (New Mexico)

The Hidalgo Formation is a geologic formation of Maastrichtian age (latest Cretaceous)[1] in southwestern New Mexico.[2] It is of interest to geologists for the clues it preserves of the nature of Laramide deformation in the latest Cretaceous.[3]

Description

The formation is mostly basalt[4] or andesite[5] lava flows, but with some interbedded breccia and pyroclastic rock and, in some locations, up to 200 feet (61 m) of limestone and shale. The formation rests unconformably on the Ringbone Formation[4] or Skunk Ranch Formation,[6] and varies greatly in thickness, from 900 to 5,000 feet (270 to 1,520 m).[4] Argon-argon dating gives a consistent age between 70.53 and 71.44 million years.[7] The formation is overlain by the Rubio Peak Formation.[6]

The formation is intepreted as a volcanic center located inland of the southwest coast of the Ringbone depositional basin[4] that erupted during Laramide tectonic deformation that partitioned the basin.[8] It may correlate with the Salero Formation of southeastern Arizona.[9]

History of investigation

The formation was first named the Hidalgo Volcanics by Samuel G. Lasky in 1978 for outcroups found throughout Hidalgo County, New Mexico.[4]

References

  1. ^ Marvin, R.F.; Naeser, C.W.; Mehnert, H.H. (1978). "Tabulation of radiometric ages--Including unpublished K-Ar and fission-track ages for rocks in southeastern Arizona and southwestern New Mexico" (PDF). New Mexico Geological Society Field Conference Series. 29: 243–252. Retrieved 14 October 2021.
  2. ^ Lasky, Samuel G. (1938). "Newly Discovered Section of Trinity Age in Southwestern New Mexico". AAPG Bulletin. 22 (5): 524–540. doi:10.1306/3D932F80-16B1-11D7-8645000102C1865D. ISSN 0149-1423.
  3. ^ Jennings, George R.; Lawton, Timothy F.; Clinkscales, Christopher A. (June 2013). "Late Cretaceous U–Pb tuff ages from the Skunk Ranch Formation and their implications for age of Laramide deformation, Little Hatchet Mountains, southwestern New Mexico, U.S.A.". Cretaceous Research. 43: 18–25. doi:10.1016/j.cretres.2013.02.001.
  4. ^ a b c d e Lasky 1938.
  5. ^ Zeller, R.A., Jr. (1970). "Geology of the Little Hatchet Mountains, Hidalgo and Grant Counties, New Mexico" (PDF). New Mexico Bureau of Mines and Mineral Resources Bulletin. 96. Retrieved 16 September 2020.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  6. ^ a b Jennings, Lawton & Clinkscales 2013.
  7. ^ Young, John R.; McMillan, Nancy J.; Lawton, Timothy F.; Esser, Richard P. (2000). "Volcanology, geochemistry and structural geology of the Upper Cretaceous Hidalgo Formation, southwestern New Mexico" (PDF). New Mexico Geological Society Field Conference Series. 51: 149–156. Retrieved 14 October 2021.
  8. ^ Basabilbazo, George (2000). "The Upper Cretaceous Ringbone Formation, Little Hatchet Mountains, southwestern New Mexico" (PDF). New Mexico Geological Society Field Conference Series. 51: 203–210. Retrieved 14 October 2021.
  9. ^ * Hayes, Philip Thayer (1970). "Cretaceous paleogeography of southeastern Arizona and adjacent areas". U.S. Geological Survey Professional Paper. Professional Paper. 658-B. doi:10.3133/pp658B.
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