Mojado Formation: Difference between revisions
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==References== |
==References== |
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* {{cite journal |last1=Hayes |first1=P.T. |date=1970 |title=Cretaceous paleogeography of southeastern Arizona and adjacent areas |journal=U.S. Geological Survey Professional Paper |volume=658-B |pages=B1–B42 | |
* {{cite journal |last1=Hayes |first1=P.T. |date=1970 |title=Cretaceous paleogeography of southeastern Arizona and adjacent areas |journal=U.S. Geological Survey Professional Paper |volume=658-B |pages=B1–B42 |doi=10.3133/pp658B }} |
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* {{cite encyclopedia |last1=Lawton |first1=Timothy F. |year=2004 |title=Upper Jurassic and lower Cretaceous strata of southwestern New Mexico and northern Chihuahua, 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=153–168 |isbn=9781585460106}} |
* {{cite encyclopedia |last1=Lawton |first1=Timothy F. |year=2004 |title=Upper Jurassic and lower Cretaceous strata of southwestern New Mexico and northern Chihuahua, 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=153–168 |isbn=9781585460106}} |
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* {{cite journal |last1=Lucas |first1=Spencer G. |author1-link=Spencer G. Lucas |last2=Estep |first2=John W. |year=1998 |title=Lithostratigraphy and biostratigraphy of the lower-middle Cretaceous Bisbee group, southwestern New Mexico |journal=New Mexico Museum of Natural History and Science Bulletin |volume=14 |url=https://books.google.com/books?id=yF4fCgAAQBAJ&q=Lithostratigraphy+and+biostratigraphy+of+the+Lower-middle+Cretaceous+Bisbee+group,+southwestern+New+Mexico&pg=PA39 |accessdate=5 August 2020}} |
* {{cite journal |last1=Lucas |first1=Spencer G. |author1-link=Spencer G. Lucas |last2=Estep |first2=John W. |year=1998 |title=Lithostratigraphy and biostratigraphy of the lower-middle Cretaceous Bisbee group, southwestern New Mexico |journal=New Mexico Museum of Natural History and Science Bulletin |volume=14 |url=https://books.google.com/books?id=yF4fCgAAQBAJ&q=Lithostratigraphy+and+biostratigraphy+of+the+Lower-middle+Cretaceous+Bisbee+group,+southwestern+New+Mexico&pg=PA39 |accessdate=5 August 2020}} |
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* {{cite journal |last1=Zeller |first1=R.A., Jr. |year=1962 |title=Reconnaissance geologic map of southern Animas Mountains [New Mexico] |journal=New Mexico Bureau of Mines and Mineral Resources Geologic Map |volume=17 |url=https://ngmdb.usgs.gov/Prodesc/proddesc_73069.htm |accessdate=5 August 2020}} |
* {{cite journal |last1=Zeller |first1=R.A., Jr. |year=1962 |title=Reconnaissance geologic map of southern Animas Mountains [New Mexico] |journal=New Mexico Bureau of Mines and Mineral Resources Geologic Map |volume=17 |url=https://ngmdb.usgs.gov/Prodesc/proddesc_73069.htm |accessdate=5 August 2020}} |
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* {{cite journal |last1=Zeller |first1=R.A., Jr. |year=1965 |title=Stratigraphy of the Big Hatchet Mountains Area, New Mexico |journal=New Mexico Bureau of Mines and Mineral Resources Memoir |volume=16}} |
* {{cite journal |last1=Zeller |first1=R.A., Jr. |year=1965 |title=Stratigraphy of the Big Hatchet Mountains Area, New Mexico |journal=New Mexico Bureau of Mines and Mineral Resources Memoir |volume=16 |url=https://geoinfo.nmt.edu/publications/monographs/memoirs/16/ |access-date=11 October 2021}} |
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* {{cite journal |last1=Zeller |first1=R.A., Jr. |last2=Alper |first2=A.M. |year=1965 |title=Geology of the Walnut Wells quadrangle, Hidalgo County, New Mexico |journal=New Mexico Bureau of Mines and Mineral Resources Bulletin |volume=84 |url=https://geoinfo.nmt.edu/publications/monographs/bulletins/downloads/84/B84.pdf |accessdate=5 August 2020}} |
* {{cite journal |last1=Zeller |first1=R.A., Jr. |last2=Alper |first2=A.M. |year=1965 |title=Geology of the Walnut Wells quadrangle, Hidalgo County, New Mexico |journal=New Mexico Bureau of Mines and Mineral Resources Bulletin |volume=84 |url=https://geoinfo.nmt.edu/publications/monographs/bulletins/downloads/84/B84.pdf |accessdate=5 August 2020}} |
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Revision as of 15:17, 11 October 2021
Mojado Formation | |
---|---|
Stratigraphic range: | |
Type | Formation |
Underlies | Cowboy Spring Formation |
Overlies | U-Bar Formation |
Thickness | 5,150–7,800 feet (1,570–2,380 m) |
Lithology | |
Primary | Sandstone |
Other | Shale, limestone, siltstone |
Location | |
Coordinates | 31°30′21″N 108°23′14″W / 31.505910°N 108.387181°W |
Region | New Mexico |
Country | United States |
Type section | |
Named for | Mojado Pass |
Named by | R.A. Zeller Jr. |
Year defined | 1962 |
The Mojado Formation is a geologic formation in southwestern New Mexico. It preserves fossils dating back to the early Cretaceous period.[1][2]
Description
The formation consists mostly of sandstone and shale, with some limestone, and siltstone.[3] It rests conformably on the U-Bar Formation[2] and is unconformably overlain by the Cowboy Spring Formation.The total thickness is 5,150–7,800 feet (1,570–2,380 m).[4]
Lucas et al. assign the formation to the Bisbee Group and divided it into the Fryingpan Spring, Sarten, Beartooth, and Rattlesnake Ridge members.[3]
The Fryingpan Spring Member is interpreted as continental deltaic sedimentation.[5] The Sarten Member is fluvial while the Rattlesnake Ridge Member represents a return to shallow marine conditions.[6]
Fossils
The formation contains fossil mollusks such as gastropods, ammonites, and pelecypod,[2] foraminifera, and scaphopods. These date the formation to the late Albian.[4]
History of investigation
The formation name was first used by Zeller in 1962,[1] but he did not formally name the formation until 1965.[2] In 1998, Lucas et al. assigned the formation to the Bisbee Group and divided it into the Fryingpan Spring, Sarten, Beartooth, and Rattlesnake Ridge members.[3] However, Lawton abandoned the Beartooth Member in 2004.[6]
See also
Footnotes
- ^ a b Zeller 1962.
- ^ a b c d Zeller 1965.
- ^ a b c Lucas & Estep 1998.
- ^ a b Zeller & Alper 1965.
- ^ Hayes 1970.
- ^ a b Lawton 2004, pp. 162–163.
References
- Hayes, P.T. (1970). "Cretaceous paleogeography of southeastern Arizona and adjacent areas". U.S. Geological Survey Professional Paper. 658-B: B1–B42. doi:10.3133/pp658B.
- Lawton, Timothy F. (2004). "Upper Jurassic and lower Cretaceous strata of southwestern New Mexico and northern Chihuahua, 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. 153–168. ISBN 9781585460106.
- Lucas, Spencer G.; Estep, John W. (1998). "Lithostratigraphy and biostratigraphy of the lower-middle Cretaceous Bisbee group, southwestern New Mexico". New Mexico Museum of Natural History and Science Bulletin. 14. Retrieved 5 August 2020.
- Zeller, R.A., Jr. (1962). "Reconnaissance geologic map of southern Animas Mountains [New Mexico]". New Mexico Bureau of Mines and Mineral Resources Geologic Map. 17. Retrieved 5 August 2020.
{{cite journal}}
: CS1 maint: multiple names: authors list (link) - Zeller, R.A., Jr. (1965). "Stratigraphy of the Big Hatchet Mountains Area, New Mexico". New Mexico Bureau of Mines and Mineral Resources Memoir. 16. Retrieved 11 October 2021.
{{cite journal}}
: CS1 maint: multiple names: authors list (link) - Zeller, R.A., Jr.; Alper, A.M. (1965). "Geology of the Walnut Wells quadrangle, Hidalgo County, New Mexico" (PDF). New Mexico Bureau of Mines and Mineral Resources Bulletin. 84. Retrieved 5 August 2020.
{{cite journal}}
: CS1 maint: multiple names: authors list (link)