Resource Type

Geologic Report on East Chaco Canyon Drilling Project, McKinley and San Juan Counties, New Mexico (open access)

Geologic Report on East Chaco Canyon Drilling Project, McKinley and San Juan Counties, New Mexico

This following report discusses the studies and findings of the East Chaco Canyon drilling project of northwestern New Mexico. These studies took place between July and November of 1978.
Date: May 1980
Creator: Lease, L. W.
Object Type: Report
System: The UNT Digital Library
UMTRA Project Water Sampling and Analysis Plan -- Shiprock, New Mexico (open access)

UMTRA Project Water Sampling and Analysis Plan -- Shiprock, New Mexico

Water sampling and analysis plan (WSAP) is required for each U.S. Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project site to provide a basis for ground water and surface water sampling at disposal and former processing sites. This WSAP identifies and justifies the sampling locations, analytical parameters, detection limits, and sampling frequency for the monitoring stations at the Navaho Reservation in Shiprock, New Mexico, UMTRA Project site. The purposes of the water sampling at Shiprock for fiscal year (FY) 1994 are to (1) collect water quality data at new monitoring locations in order to build a defensible statistical data base, (2) monitor plume movement on the terrace and floodplain, and (3) monitor the impact of alluvial ground water discharge into the San Juan River. The third activity is important because the community of Shiprock withdraws water from the San Juan River directly across from the contaminated alluvial floodplain below the abandoned uranium mill tailings processing site.
Date: February 1994
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Historical Review of Uranium-Vanadium Production in the Eastern Carrizo Mountains, San Juan County, New Mexico, and Apache County, Arizona (open access)

Historical Review of Uranium-Vanadium Production in the Eastern Carrizo Mountains, San Juan County, New Mexico, and Apache County, Arizona

Introduction: This report is a brief review of the uranium and/or vanadium mining in the eastern Carrizo Mountains, San Juan County, New Mexico and Apache County, Arizona. It was prepared at the request of the Navajo Tribe, the New Mexico Energy and Minerals Department, and the Arizona Bureau of Geology and Mineral Technology. As this report deals only with historical production data, the reader is referred to reports by Blagbrough and Brown (1955), Masters and others (1955), and Stokes (1951, 1954) for descriptions of the geology and ore deposits. Figure 1 shows the locations of the mines and the production is summarized in Table 1 and Figure 2. A separate report (Chenoweth and Learned, 1980) covers the production history of the northern and western Carrizo Mountains.
Date: March 1980
Creator: Chenoweth, William L.
Object Type: Report
System: The UNT Digital Library
Preliminary Appraisal of the Carnotite Resources of the Carrizo Mountains Area, San Juan County, New Mexico, and Apache County, Arizona (open access)

Preliminary Appraisal of the Carnotite Resources of the Carrizo Mountains Area, San Juan County, New Mexico, and Apache County, Arizona

From introduction: A rapid appraisal of the carnotite resources of the Salt Wash sandstone member of the Morrison formation in the Carrizo Mountains area was undertaken by the U. S. Geological Survey late in 1951 in connection with its current project of geologic mapping of the area. Though brief and preliminary, this report provides a summary of production trends and estimated reserves in the area and indicates as far as possible the total potential of the area as a source of uranium. This information may be helpful in planning new milling facilities or other measures to encourage a higher rate of production.
Date: May 1952
Creator: Strobell, J. D., Jr.
Object Type: Report
System: The UNT Digital Library
Geology and Uranium Deposits of the Carrizo Mountains Area Apache County, Arizona and San Juan County, New Mexico (open access)

Geology and Uranium Deposits of the Carrizo Mountains Area Apache County, Arizona and San Juan County, New Mexico

Although uranium gas first discovered in the Carrizo Mountains area in 1918, the ores were not developed until 1942. They have, however, been mined continuously since that time. Formations in the area range from the Pernian Cutler through the Cretaceous Mancos shale, and all are intruded by a dioritic laccolith and its related dikes. The older structures, which include the Defiance Uplift, the San Juan Basin, and the Four Corners Platform are somewhat disrupted by the effects of the intrusion. A number of mines are described and mineralogical and geochemical studies made are outlined. The primary uranium mineral is unknown, but the chief uranium ore-mineral is the secondary mineral, tyuyamunite. It is concluded that there is at least minor structural control of the ore bodies along sedimentary trends and joints, and that all ore bodies of 500 tons or more are on the Defiance monocline or its extensions. The uranium may have been syngenetic in the sediments, and redistributed by solutions or, more likely, that it rose vertically in hydrothermal solutions from the local intrusive bodies.
Date: August 1958
Creator: Hershey, Robert E.
Object Type: Report
System: The UNT Digital Library
Geology and Uranium Deposits of the Carrizo Mountains Area Apache County, Arizona and San Juan County, New Mexico (open access)

Geology and Uranium Deposits of the Carrizo Mountains Area Apache County, Arizona and San Juan County, New Mexico

From Purpose, Scope, and Methods: The objective of this study was an evaluation of resources of the Carrizo Mountains area. Four factors: distribution of ore bodies, relation of uranium to the host rock, relation of ore to structure, and circumstances that might precipitate uranium were studied in search of data bearing on manner of distribution of ore, the time and causes of deposition, and the probable source of the uranium-bearing solutions.
Date: August 1958
Creator: Hershey, Robert E.
Object Type: Report
System: The UNT Digital Library
Escarpment seeps at Shiprock, New Mexico. [Risk posed by seep water to human health and the environment] (open access)

Escarpment seeps at Shiprock, New Mexico. [Risk posed by seep water to human health and the environment]

The purpose of this report is to characterize the seeps identified at the Shiprock UMTRA Project site during the prelicensing custodial care inspection conducted in December of 1990, to evaluate the relationship between the seeps and uranium processing activities or tailings disposal, and to evaluate the risk posed by the seep water to human health and the environment. The report provides a brief description of the geology, groundwater hydrology, and surface water hydrology. The locations of the seeps and monitor wells are identified, and the water quality of the seeps and groundwater is discussed in the context of past activities at the site. The water quality records for the site are presented in tables and appendices; this information was used in the risk assessment of seep water.
Date: October 1991
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Baseline Risk Assessment of Ground Water Contamination at the Uranium Mill Tailings Site Near Shiprock, New Mexico. Revision 1 (open access)

Baseline Risk Assessment of Ground Water Contamination at the Uranium Mill Tailings Site Near Shiprock, New Mexico. Revision 1

This baseline risk assessment at the former uranium mill tailings site near Shiprock, New Mexico, evaluates the potential impact to public health or the environment resulting from ground water contamination at the former uranium mill processing site. The tailings and other contaminated material at this site were placed in an on-site disposal cell in 1986 through the US Department of Energy (DOE) Uranium Mill Tailings Remedial Action (UMTRA) Project. Currently, the UMTRA Project is evaluating ground water contamination. This risk assessment is the first document specific to this site for the Ground Water Project. There are no domestic or drinking water wells in the contaminated ground water of the two distinct ground water units: the contaminated ground water in the San Juan River floodplain alluvium below the site and the contaminated ground water in the terrace alluvium area where the disposal cell is located. Because no one is drinking the affected ground water, there are currently no health or environmental risks directly associated with the contaminated ground water. However, there is a potential for humans, domestic animals, and wildlife to the exposed to surface expressions of ground water in the seeps and pools in the area of the San Juan …
Date: April 1, 1994
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Reptilian Faunas of the Torrejon, Puerco, and Underlying Upper Cretaceous Formations of San Juan County, New Mexico (open access)

Reptilian Faunas of the Torrejon, Puerco, and Underlying Upper Cretaceous Formations of San Juan County, New Mexico

introduction: The present paper, which in some respects is supplementary to another recent one on the same region, is based on a series of vertebrate remains collected during the field season of 1916 for the United States Geological Survey by J.B. Reeside, jr., and F.R. Clark.
Date: 1919
Creator: Gilmore, Charles W.
Object Type: Report
System: The UNT Digital Library
Long-Term Surveillance Plan for the Shiprock Disposal Site, Shiprock, New Mexico (open access)

Long-Term Surveillance Plan for the Shiprock Disposal Site, Shiprock, New Mexico

The long-term surveillance plan (LTSP) for the Shiprock, New Mexico, Uranium Mill Tailings Remedial Action (UMTRA) Project disposal site describes the surveillance activities for the Shiprock disposal cell. The US Department of Energy (DOE) will carry out these activities to ensure that the disposal cell continues to function as designed. This final LTSP is being submitted to the US Nuclear Regulatory Commission (NRC) as a requirement for issuance of a general license for custody and long-term care for the disposal site. The general license requires that the disposal cell be cared for in accordance with the provisions of this LTSP. This Shiprock, New Mexico, LTSP documents whether the land and interests are owned by the US or an Indian tribe and describes in detail the long-term care program through the UMTRA Project Office.
Date: December 1, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Status of the Ground Water Flow Model for the UMTRA Project, Shiprock, New Mexico, Site (open access)

Status of the Ground Water Flow Model for the UMTRA Project, Shiprock, New Mexico, Site

A two-dimensional numerical model was constructed for the alluvial aquifer in the area of the Uranium Mill Tailings Remedial Action (UMTRA) Project Shiprock, New Mexico, site. This model was used to investigate the effects of various hydrologic parameters on the evolution of the ground water flow field. Results of the model are useful for defining uncertainties in the site conceptual model and suggesting data collection efforts to reduce these uncertainties. The computer code MODFLOW was used to simulate the two-dimensional flow of ground water in the alluvium. The escarpment was represented as a no-flow boundary. The San Juan River was represented with the MODFLOW river package. A uniform hydraulic conductivity distribution with the value estimated by the UMTRA Project Technical Assistance Contractor (TAC) and a uniform recharge distribution was used. Infiltration from the flowing artesian well was represented using the well package. The ground water flow model was calibrated to ground water levels observed in April 1993. Inspection of hydrographs shows that these levels are representative of typical conditions at the site.
Date: January 1995
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Uranium Hydrogeochemical and Stream Sediment Reconnaissance of the Shiprock NTMS Quadrangle, New Mexico/Arizona, Including Concentrations of Forty-Two Additional Elements (open access)

Uranium Hydrogeochemical and Stream Sediment Reconnaissance of the Shiprock NTMS Quadrangle, New Mexico/Arizona, Including Concentrations of Forty-Two Additional Elements

From introduction: This report presents uranium and other elemental data resulting from the Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) of the Shiprock National Topographic Map Series (NTMS) quadrangle, New Mexico/Arizona, by the Los Alamos Scientific Laboratory (LASL).
Date: May 1980
Creator: Morgan, Terrance L. & Purson, John D.
Object Type: Report
System: The UNT Digital Library

Mine Location Map, Carrizo Mountains Uranium Area, Apache County, Arizona and San Juan County, New Mexico

Preliminary map of mine locations within the Carrizo Mountains uranium area in New Mexico. Scale [ca. 1:127,000].
Date: 1973
Creator: Chenoweth, William L.
Object Type: Map
System: The UNT Digital Library
Uranium Reconnaissance and Drilling in the Sanostee Area, San Juan County, New Mexico and Apache County, Arizona (open access)

Uranium Reconnaissance and Drilling in the Sanostee Area, San Juan County, New Mexico and Apache County, Arizona

Report documenting work to map in detail the Roy Mesa and Enos Johnson claim areas so that ore guides could be determined and the areas could be evaluated for drilling and to complete a general reconnasaince of the favorable Mesozoic.
Date: February 1959
Creator: Blagbrough, John W.; Thieme, D. A.; Archer, B. J., Jr. & Lott, R. W.
Object Type: Report
System: The UNT Digital Library
Reconnaissance for uranium in the Toadlena area, San Juan County, New Mexico (open access)

Reconnaissance for uranium in the Toadlena area, San Juan County, New Mexico

Discussing a uranium reconnaissance program undertaken to evaluate formations that were producing uranium and vanadium ore in the Sanastee area.
Date: January 8, 1957
Creator: Archer, Bryan J.
Object Type: Report
System: The UNT Digital Library
Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910: Part 1. -- Analyses (open access)

Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910: Part 1. -- Analyses

From Significance and value of Analyses of Coal: "The analyses published in this report cover samples of coal collected in many different parts of the country with unusual care by experiences men, in such manner as to make them representative of extensive beds of coal."
Date: 1913
Creator: Lord, N. W.
Object Type: Report
System: The UNT Digital Library
Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910 Part 2. Descriptions of Samples (open access)

Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910 Part 2. Descriptions of Samples

From Introduction: "This volume contains the descriptions of the samples whose analyses are published in the preceding volume, Part I of this bulletin. The descriptions have been compiled from the notebooks of the persons who collected the samples, have been condensed from accounts given in published reports of the United States Geological Survey, or have furnished by the collection themselves. Inasmuch as the descriptions represent the work of many persons during a period of six years, and inasmuch as they were recorded under widely differing conditions, they necessarily vary in fullness detail."
Date: 1913
Creator: Lord, N. W.
Object Type: Report
System: The UNT Digital Library