OFR 97-492: Ardmore Quadrangle NURE HSSR Study
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[See History of NURE HSSR Program for a summary of the entire program.]
Oklahoma
Subcontractors for the Savannah River Laboratory (SRL) collected at least 2,493 stream-sediment, 2,751 ground-water, and 375 stream-water samples within 24 counties of the eastern portion of Oklahoma as part of the NURE Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) program. The sampling effort was completed between May and October of 1978 and included portions of the Ardmore, Enid, Fort Smith, McAlester, Oklahoma City, Sherman, Texarkana, and Tulsa 1:250,000-scale quadrangles. (A total of 140 stream-sediment and 166 water samples were collected within the Ardmore quadrangle.) These samples were sent to SRL for analysis of uranium and 16 additional elements. SRL was able to analyze only 879 Oklahoma stream-sediment samples and all 3,126 Oklahoma water samples; 17 stream-sediment and 166 water samples from the Ardmore quadrangle. The analytical and site location data for all Oklahoma sediment samples were released as a separate file in the Arkansas, Louisiana, Mississippi, Missouri, Oklahoma, and Texas Data Report [GJBX-104(82)].
SRL: Ardmore Quadrangle
SRL did not release a separate report for the Ardmore quadrangle.
ORGDP: Ardmore, McAlester, Little Rock, and Helena Quadrangles
SRL sent several Oklahoma and Arkansas sediment samples to the Oak Ridge Gaseous Diffusion Plant (ORGDP) for analysis of uranium and 31 additional elements. ORGDP released the analytical data for 639 samples in the Ardmore, McAlester, Little Rock, and Helena Quadrangles GJBX-70(82) Data Report. This report includes data for 121 sediment samples from the Ardmore quadrangle. The site coding information for this data set was summarized in the GJBX-51(82) report.
Gold Analyses
Data for gold analyses of sediments by SRL neutron activation were released in the GJBX-135(82) summary report. The introduction of that report states:
"This report contains previously unreported neutron-activation analyses of gold in sediment samples determined at SRL. These data were not included in the standard SRL NURE data reports because the gold spectrum was not measured in the original analytical procedure and the report format was designed without the gold analyses being included. Gold analyses became available as the analytical procedure was refined, but the report format was not modified to incorporate these data."
Only those sediment samples that had detectable concentrations of gold by neutron activation analysis were given in the GJBX-135(82) report. Sediment samples with concentrations below detection limits were not reported and can only be ascertained by identifying which samples were actually analyzed by neutron activation at SRL.
ORGDP: Ardmore Quadrangle
Totals of 779 stream-sediment and 745 ground-water samples were collected from the Ardmore quadrangle as part of the Oak Ridge Gaseous Diffusion Plant (ORGDP) Ardmore Quadrangle NURE Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) study. Stream-sediment sampling was conducted by ORGDP personnel between December of 1977 and June of 1978. Water samples were collected by contracted personnel under the direction of the Oklahoma Geological Survey between December of 1977 and June of 1978. These samples were analyzed by the ORGDP for uranium and other elements. The analytical data were released as the Ardmore Quadrangle NURE HSSR study GJBX-142(78) report.
Summary Tables
Because of the various laboratories and analytical methods used, some SRL samples may have been analyzed once, twice, or not at all. The following table summarizes the analysis of Ardmore quadrangle samples.
Laboratory Analysis | Sediments | Waters |
---|---|---|
Only SRL | 17 | 166 |
Only ORGDP (on SRL samples) | 121 | 0 |
Only ORGDP (on ORGDP samples) | 777 | 745 |
Both SRL and ORGDP | 0 | 0 |
None | 4 | 0 |
Total Samples | 919 | 911 |
Total Data Records | 919 | 911 |
The following is a list of all sample types collected and reported for NURE studies in the Ardmore quadrangle.
Sediment Sample Type | Number of Samples | Water Sample Type | Number of Samples |
---|---|---|---|
Wet Streams | 748 | Streams | 12 |
Dry Streams | 171 | Wells | 894 |
Springs | 5 | ||
Total Sediments | 919 | Total Waters | 911 |
These Ardmore quadrangle samples were analyzed by one or more of the following methods:
Sediment Samples
Water Samples
Sediment Records
The Ardmore quadrangle sediment data consist of Ardmore quadrangle records from the Oklahoma portion of the Arkansas, Louisiana, Mississippi, Missouri, Oklahoma, and Texas GJBX-104(82) Data Report combined with records from the ORGDP Ardmore, McAlester, Little Rock, and Helena Quadrangles GJBX-70(82) Data Report plus records from the ORGDP Ardmore Quadrangle NURE HSSR study GJBX-142(78) report. When combining sample records, site descriptive information and coordinates were compared for all corresponding records. The following problems were found and addressed during the comparison and reformatting stages for the Ardmore quadrangle sediment data:
Water Records
The Ardmore quadrangle water data consist of Ardmore quadrangle records from the Oklahoma portion of the Arkansas, Louisiana, Mississippi, Missouri, Oklahoma, and Texas GJBX-104(82) Data Report plus records from the ORGDP Ardmore Quadrangle NURE HSSR study GJBX-142(78) report. The following problems were found and addressed during the reformatting process for the Ardmore quadrangle water data:
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).
Ardmore Quadrangle Sediment Data - 919 records
Ardmore Quadrangle Water Data - 911 records
In the eastern United States, SRL collected samples primarily by county. Often, not all counties within a quadrangle were completely sampled. SRL sample coverage in the Ardmore quadrangle is limited to the Atoka, Bryan, and Pittsburg Counties in Oklahoma. These counties are found only along the eastern border of the Ardmore quadrangle. The laboratory and analytical methods used also may vary by county such that adjacent counties often have very different analytical coverages.
Two stream-sediment samples collected by SRL in Bryan County, Oklahoma within the Ardmore quadrangle were not analyzed by any of the various laboratories. Two stream-sediment samples collected by ORGDP within the Ardmore quadrangle were also not analyzed by any of the various laboratories.
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.
For all ORGDP samples, 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 +/- 317 feet (97 m) to +/- 300 feet (91 m) for longitude values (calculated at latitudes of 30° and 35°N, respectively.)
None found.
Back to Oklahoma NURE data
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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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