USGS Visual Identifier

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Geologic Unit: Gatuna

Publication:
Vine, J.D., 1963, Surface geology of the Nash Draw quadrangle, 
   Eddy County, New Mexico, IN Contributions to general geology, 
   1961: U.S. Geological Survey Bulletin, 1141-B, p. B1-B46.
Usage in Publication:
Gatuna formation*

Modifications: Geologic Province: Dominant Lithology:
 Overview
 Permian basin
 

Summary:
Unconformably overlies Permian and Triassic rocks. Difficult to distinguish from Pierce Canyon redbeds and from Santa Rosa sandstone. In general, bedding more obscure in Gatuna than in the older rocks. Mapped (geologic map) in several exposures at southwest corner and central part of quad., Eddy Co., NM in the Permian basin. Is about 3 to 5 ft thick in most of area. Locally can be as much as 100 ft. Is overlain by caliche that is more resistant than Gatuna. Caliche and Gatuna mapped together, except where Gatuna thick enough to map separately. Three measured sections described. One drill hole described. Stratigraphic chart. Consists of reddish-orange friable sandstone. siltstone, and conglomerate. Deposition of Gatuna thought to have started just after, or accompanied solution of the older Rustler and Salado formations. Considered Pleistocene? in age, deposited on an erosional surface that is younger than Pliocene Ogallala to east. However, it may be of Ogallala rather then post-Ogallala in age.
Source: GNU records (USGS DDS-6; Denver GNULEX).


Publication:
Bachman, G.O., 1976, Cenozoic deposits of southeastern New Mexico 
   and an outline of the history of evaporite dissolution: U.S. 
   Geological Survey Journal of Research, v. 4, no. 2, p. 
   135-149.
Usage in Publication:
Gatuna Formation*

Modifications: Geologic Province: Dominant Lithology:
 Reference
 Permian basin
 Sandstone
 Conglomerate

Summary:
Is mapped (fig 2) in eastern Lea Co, NM in Permian basin. Reference section described in north side of Gatuna Canyon, SW1/4 SW1/4 sec 36, T19S, R30E. Reference section (descending) as follows: upper unit--sandstone, pale-reddish-brown (10R 5/4), slightly calcareous, medium grained; grains subround to round and well sorted; bedding indistinct; 11.4 ft thick; middle unit--conglomerate, poorly sorted; upper part with abundant coarse subangular clasts as large as 9.8 in; grades downward to less coarse sand and pebbles; 40 ft thick; lower unit--sandstone, friable, moderate-reddish-orange (10R 6/6) to pale-reddish-brown (10R 5/4), fine to medium grained; grains subangular to subround, well sorted, and include rock fragments quartz, and sparse biotite; cement is weak and calcareous; beds about 4 in thick are irregular to indistinct; 3.3 ft thick. Total thickness in Gatuna Canyon is from about 50 to 100 ft. Unit was derived locally and deposited before the Pecos River cut headward to the Sangre de Cristo Mountains. Overlies Permian rocks along east side of Clayton Basin; is overlain by Mescalero caliche (new, informal). Includes clasts derived from pisolitic caliche of the Ogallala Formation as evidence for its post-Ogallala age. Age is considered to be early or middle Pleistocene.
Source: GNU records (USGS DDS-6; Denver GNULEX).


Publication:
Barnes, V.E., 1976, Geologic atlas of Texas, Hobbs Sheet; William 
   Battle Phillips memorial edition: University of Texas-Austin, 
   Bureau of Economic Geology, 1 sheet, scale 1:250,000
Usage in Publication:
Gatuna Formation

Modifications: Geologic Province: Dominant Lithology:
 Areal limits
 Overview
 Permian basin
 Sand
 Conglomerate
 Gypsum
 Limestone
 Siltstone

Summary:
Is Pleistocene formation mapped in numerous scattered small areas along western part of map sheet in eastern Eddy Co, NM (western Permian basin). Map unit described as mostly sand, fine, friable, yellowish to reddish orange, red; some conglomerate, gypsum, limestone, and siltstone, gray purplish red, and shale, greenish; upper few ft calichified; may exceed 300 ft in thickness at head of Cedar Canyon, in many places only a few ft thick. Probably underlies part of Querecho Plains, Mescalero Sands, San Simon Swale, and Monument Draw; confined to NM.
Source: GNU records (USGS DDS-6; Denver GNULEX).


Publication:
Izett, G.A., and Wilcox, R.E., 1982, Map showing localities and 
   inferred distributions of the Huckleberry Ridge, Mesa Falls, 
   and Lava Creek ash beds (Pearlette family ash beds) of 
   Pleistocene age in the western United States and southern 
   Canada: U.S. Geological Survey Miscellaneous Investigations 
   Series Map, I-1325, 1 sheet, scale 1:4,000,000
Usage in Publication:
Gatuna Formation*

Modifications: Geologic Province: Dominant Lithology:
 Isotopic dating
 Permian basin
 

Summary:
Isotopic dating based on sample of Lava Creek B ash that occurs as 1-m-thick bed in the Gatuna Formation on east side of Nash Draw at about 3,300 ft altitude. Locality is SE1/4 NW1/4 sec 36, T21S, R30E, Eddy Co, NM, Nash Draw 7 1/2 minute quadrangle in Permian basin. Zircon fission-track age of 0.53 +/-0.33 m.y. (C.W. Naeser, written communication, 1978) on sample number 78W73. Age is Pleistocene.
Source: GNU records (USGS DDS-6; Denver GNULEX).