OFR 97-492: Amarillo Quadrangle NURE HSSR Study
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[See History of NURE HSSR Program for a summary of the entire program.]
ORGDP: Amarillo Quadrangle
Totals of 644 stream-sediment and 1,118 ground-water samples were collected from the Amarillo quadrangle as part of the Oak Ridge Gaseous Diffusion Plant (ORGDP) Amarillo Quadrangle NURE Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) study. Both stream-sediment and ground-water sampling were performed by ORGDP staff between August and December, 1978. These samples were analyzed by the ORGDP for uranium and other elements. The analytical data were released as the Amarillo Quadrangle NURE HSSR study GJBX-111(79) report.
Summary Tables
The following is a listing of the sample types collected for the Amarillo quadrangle study.
Sediment Sample Type | Number of Samples | Water Sample Type | Number of Samples |
---|---|---|---|
Wet Streams | 130 | Streams | 1 |
Dry Streams | 514 | Wells | 1,102 |
Springs | 15 | ||
Total Sediments | 644 | Total Waters | 1,118 |
These Amarillo quadrangle samples were analyzed by one or more of the following methods:
Sediment Samples
Water Samples
The Amarillo quadrangle sediment and water data consist of reformatted records from the Amarillo Quadrangle NURE HSSR study GJBX-111(79) report. The following problems were found and addressed during the comparison and reformatting stages for the Amarillo quadrangle data:
Sediment Records
Water Records
The NURE HSSR data are now available online in two databases: The sediment database (also includes data for soils and some rocks) at http://tin.er.usgs.gov/nure/sediment/ and the water database at http://tin.er.usgs.gov/nure/water/. From these two web sites, NURE HSSR data can be selected, examined, summarized, and downloaded by political boundaries (State and County), by quadrangle (1:250,000-scale, 1:100,000-scale, and 1:63,360-scale for Alaska or 1:24,000-scale for the Lower 48 States), and by hydrologic unit (drainage region, subregion, river basin, or sub-basin). Selected data can be downloaded as a dBase file, a shapefile, an HTML table, or ASCII text (tab- or comma-delimited).
Amarillo Quadrangle Sediment Data - 644 records
Amarillo Quadrangle Water Data - 1,118 records
The ORGDP water samples were reportedly collected in the field without any filtering or acidification. (See the SAMPTYP coding explanation in the On-Line Manual for USGS-Reformatted NURE HSSR Data Files for descriptions of different Sample Types). However, the samples were filtered later in the laboratory through a 0.45 micron membrane filter before analysis. Therefore, the samples were not true "untreated water" samples and the analytical data may not be directly comparable for other quadrangle water samples of the same SAMPTYP when collected by a different laboratory. Since this was the standard procedure for Oak Ridge, water data from other Oak Ridge quadrangles should be comparable.
Latitude-longitude coordinates were reported in the original data files, as decimal degrees, to only 3 decimal places. Therefore, the precision of these coordinates is limited to +/- 0.001 degrees or +/- 3.6 seconds. This translates to a minimum precision of +/- 364 feet (111 m) for latitude values and between +/- 300 feet (91 m) to +/- 280 feet (85 m) for longitude values (calculated at latitudes of 35° and 40°N, respectively.)
One spring-water sample collected in the Amarillo quadrangle was not analyzed by any method.
Amarillo Quadrangle NURE Summary
An additional evaluation of the Amarillo quadrangle was conducted by the Bureau of Economic Geology, University of Texas at Austin to investigate areas of anomalous radioactivity and other geochemical anomalies [GJQ-013(81)]. The abstract noted that there are favorable environments for Texas roll-type, Wyoming roll-type, and non-channel-controlled peneconcordant uranium deposits in the Amarillo quadrangle. These environments are found in the sandstones and granite wash of Pennsylvanian/Permian age, plus areas of the Triassic Dockum Group. As part of this study, 1,123 rocks were sampled and analyzed for uranium plus an additional 28 elements. These data are found only as tables on the microfiche accompanying the report.
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Frequently Asked Questions Concerning NURE HSSR Data
Home Page: USGS National Geochemical Database - NURE HSSR data
Page written by Bryan G. Moravec and Steven M. Smith
Contact: Steven M. Smith (smsmith@usgs.gov)
Version 1.20: August 07, 2000
Version 1.30: September 11, 2001
Version 1.41: February 23, 2006
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