Preliminary Study of the Uranium Potential of Tertiary Rock in the Central San Juan Basin, New Mexico

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Description

Three formations in the Tertiary of the San Juan Basin were investigated for their uranium favorability. They are the Ojo Alamo Sandstone, the Nacimiento Formation, and the San Jose Formation. The study comprised a literature survey and a basin analysis, which consisted of subsurface lithofacies, stratigraphic, and radiometric mapping. Field work in preparation for the subsurface analysis consisted of examination of outcrop and measured sections, surface radiometric traverses, and checking of reported surface radioactive anomalies.

Physical Description

34 p. : ill., maps (some folded in pocket) ; 28 cm.

Creation Information

Vizcaino, H. P. & O'Neill, A. J. December 1977.

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  • Main Title: Preliminary Study of the Uranium Potential of Tertiary Rock in the Central San Juan Basin, New Mexico
  • Series Title: GJBX
  • Series Title: Atomic Energy Commission Reports
  • Added Title: United States Department of Energy Grand Junction Office Report GJBX 78(77)

Description

Three formations in the Tertiary of the San Juan Basin were investigated for their uranium favorability. They are the Ojo Alamo Sandstone, the Nacimiento Formation, and the San Jose Formation. The study comprised a
literature survey and a basin analysis, which consisted of subsurface lithofacies, stratigraphic, and radiometric mapping. Field work in preparation for the subsurface analysis consisted of examination of outcrop and measured sections, surface radiometric traverses, and checking of reported surface radioactive anomalies.

Physical Description

34 p. : ill., maps (some folded in pocket) ; 28 cm.

Notes

Summary: "Three formations in the Tertiary of the San Juan Basin were investigated for their uranium favorability. They are the Ojo Alamo Sandstone, the Nacimiento Formation, and the San Jose Formation. The study comprised a literature survey and a basin analysis, which consisted of subsurface lithofacies, stratigraphic, and radiometric mapping. Field work in preparation for the subsurface analysis consisted of examination of outcrop and measured sections, surface radiometric traverses, and checking of reported surface radioactive anomalies. Interpretation of subsurface mapping provided the primary basis for favorability assessment. The sandstone trends depicted in lithofacies maps, and stratigraphic cross sections reflect large channel complexes and major fluvial systems originating in favorable source areas. Although surface radioactivity anomalies were found to be few, weak, and widespread, the San Juan Basin has abundant favorable host rocks. The subsurface anomalies, although weak, are widespread and sometimes persist throughout thickness intervals greater than 50 ft. Subsurface anomalies were mapped on a wide-spaced grid and are generalized. On the basis of apparent source, lithology, differential permeability, contents of carbonaceous detritus, and geometry, the Nacimiento Formation and the basal facies of the San Jose Formation in the north-central basin have the greatest potential. The Ojo Alamo Sandstone is less favorable, and the Nacimiento Formation in the southern part of the basin and the upper San Jose Formation are the least favorable of the units studied" (p. 1).

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  • December 1977

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  • Sept. 17, 2017, 6:24 p.m.

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Vizcaino, H. P. & O'Neill, A. J. Preliminary Study of the Uranium Potential of Tertiary Rock in the Central San Juan Basin, New Mexico, report, December 1977; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc784616/: accessed December 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.