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Geologic Unit: Aztec
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Map showing publication footprint
  • Usage in publication:
    • Aztec sandstone*
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Sandstone
  • AAPG geologic province:
    • Great Basin province
Publication:

Hewett, D.F., 1931, Geology and ore deposits of the Goodsprings quadrangle, Nevada: U.S. Geological Survey Professional Paper, 162, 172 p., (incl. geologic map, scale 1:62,500)


Summary:

Pg. 9, 35, etc. Aztec sandstone. Massive ledge of reddish or buff sandstone, minutely cross-bedded. Is made up of many lenses, mostly 10 to 25 feet thick, each lens in turn made up of smaller laminae 0.5 to 2 inches thick. Thickness 2,100 feet at north border of quadrangle. Overlies Chinle Formation; unconformably underlies Quaternary deposits. Age is Jurassic(?), based on correlation with sandstones observed by Reeside and Bassler (1922) near St. George, Utah.
Named from Aztec Tank, a natural depression in the sandstone several hundred ft east of Contact Mine, in which water accumulates at times of heavy rain, Goodsprings quadrangle [Lat. 35 deg. 55 min. 43 sec. N., Long. 115 deg. 28 min. 12 sec. W., Cottonwood Pass 7.5-min quadrangle, Clark Co.], southeastern NV.
[Additional locality information from USGS GNIS database and ACME Mapper 2.0, accessed on Bastille Day 2009.]

Source: US geologic names lexicon (USGS Bull. 896, p. 98); supplemental information from GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec sandstone*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Great Basin province
Publication:

Longwell, C.R., 1949, Structure of the northern Muddy Mountain area, Nevada: Geological Society of America Bulletin, v. 60, no. 5, p. 923-967.


Summary:

Pg. 929 (table 1), 931. Aztec sandstone. Geographically extended into northern Muddy Mountain area, Nevada. Thickness about 2,500 feet. Underlies, Upper Cretaceous Willow Tank formation (new), with angular unconformity, and overlies Chinle formation.

Source: US geologic names lexicon (USGS Bull. 1200, p. 185); GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec sandstone*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Great Basin province
Publication:

Longwell, C.R., 1952, Basin-and-Range geology west of the St. George basin, Utah, IN Thune, H.W., ed., Cedar City, Utah, to Las Vegas, Nevada: Intermountain Association of Petroleum Geologists, Guidebook to the geology of Utah, no. 7, p. 27-44.


Summary:

Pg. 34 (fig. 4), 35. Aztec sandstone. Geographically extended into Frenchman Mountain area, east of Las Vegas, southeastern Nevada. Here unconformably underlies Thumb formation (new) of Cretaceous(?) age. In Muddy Mountains, underlies Willow Tank formation and overlies Chinle formation. Age is Jurassic(?).

Source: US geologic names lexicon (USGS Bull. 1200, p. 185); GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec sandstone*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Great Basin province
Publication:

Hewett, D.F., 1956, Geology and mineral resources of the Ivanpah Quadrangle, California and Nevada: U.S. Geological Survey Professional Paper, 275, 172 p., (incl. geologic map, scale 1:125,000)


Summary:

Pg. 48, pl. 1. Aztec sandstone. Mapped in Ivanpah quadrangle, California and Nevada. Geographically extended into the Mescal Range, 2 miles west of Kokoweef Peak in Mojave Desert. Here, thickness is 800 feet. Overlies Chinle Formation; underlies 50 feet of limestone and dolomite beds mapped with Aztec Sandstone. Age is Jurassic(?) [no basis given].

Source: US geologic names lexicon (USGS Bull. 1200, p. 185); GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec sandstone*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Great Basin province
Publication:

Jennings, C.W., 1961, Geologic map of California; Kingman sheet: California Division of Mines and Geology, scale 1:250,000


Summary:

Aztec sandstone. Mapped in California part of Kingman sheet. Here extended to Devil's Playground area. Age is Jurassic(?). [no basis given]

Source: Modified from GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec Sandstone*
  • Modifications:
    • Mapped
  • Dominant lithology:
    • Quartzite
    • Breccia
  • AAPG geologic province:
    • Great Basin province
Publication:

Barca, R.A., 1966, Geology of the northern part of Old Dad Mountain quadrangle, San Bernardino County, California: California Division of Mines and Geology Map Sheet, 7, 1 sheet, 9 p., scale 1:62,500


Summary:

Aztec Sandstone. Mapped in northern part of Old Dad Mountain quadrangle, San Bernardino County, California. Geographically extended to Cowhole Mountain. Consists of dense quartzite. Contains boulder breccia lens 15 feet thick and 150 feet long near base. Thickness 1,975 to 2,100 feet. Age is Jurassic(?). "Small animal tracks, considered to be those of a Jurassic dinosaur, have been reported in the Mescal Range by J.R. Evans (oral commun., 1958)."

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec Sandstone*
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Great Basin province
Publication:

Wilson, R.F., and Stewart, J.H., 1967, Correlation of Upper Triassic and Triassic(?) formations between southwestern Utah and southern Nevada, IN Contributions to stratigraphy, 1966: U.S. Geological Survey Bulletin, 1244-D, p. D1-D20.


Summary:

Aztec Sandstone. Authors indicate equivalence with Navajo Sandstone of Jurassic and Triassic(?) age.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec Sandstone*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Great Basin province
Publication:

Evans, J.R., 1971, Geology and mineral deposits of the Mescal Range quadrangle, San Bernardino County, California: California Division of Mines and Geology Map Sheet, 17, scale 1:62,500


Summary:

Aztec Sandstone. Mapped in Mescal Range quadrangle, San Bernardino County, California. Is 1,000 feet thick in Mescal Range. Age is Jurassic, based mainly on stratigraphic correlation with similar nonmarine sandstone in Nevada and Utah.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec Sandstone*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Great Basin province
Publication:

Davis, G.A., 1973, Relations between the Keystone and Red Spring thrust faults, eastern Spring Mountains, Nevada: Geological Society of America Bulletin, v. 84, no. 11, p. 3709-3716.


Summary:

Aztec Sandstone. Overlain by breccias of Paleozoic carbonic rocks in area north of Red Springs, northern Spring Mountains, Blue Diamond quadrangle, Nevada. (sketch map sec. 31, T. 20 S., R. 59 E.)

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec Sandstone*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Great Basin province
Publication:

Dunne, G.C., 1977, Geology and structural evolution of Old Dad Mountain, Mojave Desert, California: Geological Society of America Bulletin, v. 88, no. 6, p. 737-748.


Summary:

Aztec Sandstone. Geographically extended to Old Dad Mountain, Mojave Desert, California. Contains lenses of pebble to boulder conglomerate derived from Bird Spring Formation. Is 90 feet thick and unconformably overlies Bird Spring Formation. Age is Early(?) Jurassic in text, but map shows Jurassic.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec Sandstone*
  • Modifications:
    • Age modified
    • Areal extent
  • AAPG geologic province:
    • Great Basin province
Publication:

Stewart, J.H. (compiler), and Carlson, J.E. (compiler), 1978, Geologic map of Nevada: U.S. Geological Survey [State Geologic Map], scale 1:500,000, Prepared in cooperation with Nevada Bur. Mines Geol. See also USGS MF-930


Summary:

Aztec Sandstone. Geographically extended into Currie Canyon and Currie Hills, Elko County, Nevada [this verified by R.R. Coats, 1/30/87, oral commun.]. Mapped in Elko and Clark Counties, Nevada. Age is Triassic(?) and Jurassic, based on correlation with Navajo Sandstone [this is a revision from Jurassic(?) age assignment].

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec Sandstone*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Great Basin province
Publication:

Marzolf, J.E., 1980, The Aztec Sandstone and stratigraphically related rocks in the Mojave Desert, IN Fife, D.L., and Brown, A.R., eds., Geology and mineral wealth of the California desert; Dibblee volume: South Coast Geological Society Guidebook, October 11-12, 1980, p. 215-220.


Summary:

Aztec Sandstone. Measured sections in Cowhole Mountains. Contains interbedded volcanic units. In Cowhole Mountains, unconformably overlies Paleozoic carbonates and/or volcanics of Triassic(?) age. Conformably underlies Delfonte Volcanics in Cowhole Mountains (but unconformably in Mescal Range area).

Source: Modified from GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec Sandstone*
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Great Basin province
Publication:

Stewart, J.H., 1980, Geology of Nevada; a discussion to accompany the Geologic Map of Nevada: Nevada Bureau of Mines and Geology Special Publication, no. 4, 136 p.


Summary:

Aztec Sandstone. [Conformably overlies the equivalent of the Moenave and Kayenta Formations in Clark County, Nevada]. Age is considered to be Early Jurassic, based on correlation with the Navajo Sandstone of the Colorado Plateau.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec Quartzite*
  • Modifications:
    • Redescribed
  • Dominant lithology:
    • Quartzite
  • AAPG geologic province:
    • Great Basin province
Publication:

Hamilton, Warren, 1982, Structural evolution of the Big Maria Mountains, northeastern Riverside County, southeastern California, IN Frost, E.G., and Martin, D.L., eds., Mesozoic-Cenozoic tectonic evolution of the Colorado River region, California, Arizona, and Nevada; Anderson-Hamilton volume: San Diego, CA, Cordilleran Publishers, p. 1-27., Published in conjunction with GSA symposium and field trip, April, 1982


Summary:

Aztec Quartzite. Name (applied in Grand Canyon area) extended geographically to sequence in Big Maria Mountains of southeastern California with change of lithic designation. Consists of fine-grained, ferruginous quartzite with few percent muscovite. Thickness here ranges from 2 to 150 m. Overlies Triassic(?) metasedimentary rocks; underlies Middle Jurassic(?) metaignimbrite. Intruded by Middle Jurassic granodiorite and metamorphosed in Cretaceous time. Age is Triassic(?) and Early Jurassic, based on correlation with Aztec Sandstone of the northeast Mojave Desert region.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec Sandstone*
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Great Basin province
Publication:

Marzolf, J.E., 1982, Paleographic implications of the Early Jurassic(?) Navajo and Aztec Sandstones, IN Frost, E.G., and Martin, D.L., eds., Mesozoic-Cenozoic tectonic evolution of the Colorado River region, California, Arizona, and Nevada; Anderson-Hamilton volume: San Diego, CA, Cordilleran Publishers, p. 493-501., Published in conjunction with GSA symposium and field trip, April, 1982


Summary:

Aztec Sandstone. Divided into "eastern facies" of eastern Mescal Range and "western facies" of western Mescal Range. Age is Late Triassic(?) and Early Jurassic(?), based on correlation with Navajo Sandstone.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Aztec Sandstone*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Great Basin province

Map showing publication footprint
  • Usage in publication:
    • Aztec Sandstone*
  • Modifications:
    • Biostratigraphic dating
    • Age modified
  • AAPG geologic province:
    • Great Basin province
Publication:

Reynolds, R.E., 1983, Jurassic trackways in the Mescal Range, San Bernardino County, California, IN Gurgel, K.D., ed., Geologic excursions in stratigraphy and tectonics; from southeastern Idaho to the southern Inyo Mountains, California, via Canyonlands and Arches National Parks, Utah; Guidebook, Part 2: Utah Geological and Mineral Survey Special Studies, no. 60, p. 46-48.


Summary:

Aztec Sandstone. Trackways attributed to Coelurosaurs (small dinosaurs) identified in Aztec Sandstone in Mescal Range, northeastern San Bernardino County, California. Age range (for both Aztec and Navajo Sandstones) is suggested to be between early Pliensbachian and late middle Bajocian (citing Marzolf, 1982).

Source: GNU records (USGS DDS-6; Menlo GNULEX).


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