OFR 97-492: Poplar Bluff Quadrangle NURE HSSR Study
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[See History of NURE HSSR Program for a summary of the entire program.]
Missouri
Subcontractors for the Savannah River Laboratory (SRL) collected at least 2,162 stream-sediment, 1,340 surface-water, and 3,423 ground-water samples within 30 counties from the southeast and southwest corners of Missouri as part of the NURE Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) program. The samples were collected during May - August, 1978, October - December, 1978, and May - June, 1979 and included portions of the Dyersburg, Harrison, Joplin, Paducah, Poplar Bluff, Rolla, St. Louis, Springfield, and Tulsa 1:250,000-scale quadrangles. (A total of 372 stream-sediment, 229 surface-water, and 704 ground-water samples were collected within the Poplar Bluff quadrangle.) These samples were sent to SRL for analysis of uranium and 16 additional elements. SRL was able to analyze only 1,669 Missouri stream-sediment samples and 4,762 Missouri water samples; this includes 371 stream-sediment and 931 water samples from the Poplar Bluff quadrangle. The analytical and site location data for all Missouri samples were released in the Arkansas, Louisiana, Mississippi, Missouri, Oklahoma, and Texas Data Report [GJBX-104(82)].
Arkansas
Subcontractors for the Savannah River Laboratory (SRL) collected at least 3,292 stream-sediment, 5,121 ground-water, and 1,711 surface-water samples within 43 counties of central Arkansas 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 El Dorado, Fort Smith, Greenwood, Harrison, Helena, Little Rock, McAlester, Memphis, Poplar Bluff, Russellville, Texarkana, and Tulsa 1:250,000-scale quadrangles. (A total of 303 stream-sediment, 258 surface-water, and 646 ground-water samples were collected within the Poplar Bluff quadrangle.) These samples were sent to SRL for analysis of uranium and 16 additional elements. SRL was able to analyze only 2,416 Arkansas stream-sediment samples and 6,831 Arkansas water samples; this includes 301 stream-sediment and 900 water samples from the Poplar Bluff quadrangle. The analytical and site location data for all Arkansas sediment and water samples were released as separate files in the Arkansas, Louisiana, Mississippi, Missouri, Oklahoma, and Texas Data Report [GJBX-104(82)].
SRL: Poplar Bluff Quadrangle
SRL released a separate quadrangle report for the Poplar Bluff NTMS quadrangle [GJBX-63(79)], which includes data for 673 stream-sediment, 1,350 ground-water, and 486 surface-water samples. These samples are the same as those found reported in the individual state data files and records with corresponding sample identification numbers contain the same or similar data. The site coding information for this data set is summarized within the text of this 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.
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 Poplar Bluff quadrangle samples.
Laboratory Analysis | Sediments | Waters |
---|---|---|
Only SRL | 672 | 1,831 |
Only Supplemental Lab | 0 | 0 |
Both SRL and Supplemental Labs | 0 | 0 |
Second SRL analysis on sample | 44 | 0 |
None | 3 | 6 |
Total Samples | 675 | 1,837 |
Total Data Records | 719 | 1,837 |
The following is a list of all sample types collected and reported for NURE studies in the Poplar Bluff quadrangle.
Sediment Sample Type | Number of Samples | Water Sample Type | Number of Samples |
---|---|---|---|
Wet Streams | 675 | Streams | 487 |
Wells | 1,295 | ||
Springs | 55 | ||
Total Sediments | 675 | Total Waters | 1,837 |
These Poplar Bluff quadrangle samples were analyzed by one or more of the following methods:
Sediment Samples
Water Samples
Sediment Records
The Poplar Bluff quadrangle sediment data consist primarily of records from the Poplar Bluff Quadrangle GJBX-63(79) Data Report. These records were compared with corresponding records from the Arkansas and Missouri portions of the Arkansas, Louisiana, Mississippi, Missouri, Oklahoma, and Texas GJBX-104(82) Data Report. The following problems were found and addressed during the comparison and reformatting stages for the Poplar Bluff quadrangle sediment data:
Water Records
The Poplar Bluff quadrangle water data consist primarily of records from the Poplar Bluff Quadrangle GJBX-63(79) Data Report. These records were compared with corresponding records from the Arkansas and Missouri portions of the Arkansas, Louisiana, Mississippi, Missouri, Oklahoma, and Texas GJBX-104(82) Data Report. The following problems were found and addressed during the comparison and reformatting stages for the Poplar Bluff 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).
Poplar Bluff Quadrangle Sediment Data - 719 records
Poplar Bluff Quadrangle Water Data - 1,836 records
The following statement about site location accuracy was found in the Poplar Bluff Quadrangle GJBX-63(79) Data Report.
Twenty-four percent of the sampled sites were checked by SRL personnel or by a subcontractor. The checking of these sites suggests that about ten percent of the sites in the Poplar Bluff quadrangle were mismapped by 300 meters or more. Several sites could not be located.
Although these checks show that the quality of field work in the Poplar Bluff quadrangle does not meet SRL standards, these data are released to expedite the assessment of the quadrangle's uranium potential. Parts of the quadrangle may be resampled and reported later if the Department of Energy so requests.
No additional sampling of the Poplar Bluff quadrangle for the NURE HSSR Program was ever reported.
In the eastern United States, SRL collected samples primarily by county. Often, not all counties within a quadrangle were completely sampled. The laboratory and analytical methods used also may vary by county such that adjacent counties often have very different analytical coverage. Samples were collected throughout the Poplar Bluff quadrangle. The sampled Arkansas counties include Clay, Fulton, Greene, Izard, Lawrence, Randolph, and Sharp. The sampled Missouri counties include Butler, Carter, Dunklin, Howell, Oregon, Ripley, Stoddard, Shannon, and Wayne.
Three sediment and six water samples within the Poplar Bluff quadrangle were not analyzed by any of the various laboratories. The following table summarizes the locations of those unanalyzed samples.
State | County | Sample Media | Unanalyzed Samples | Total Samples |
---|---|---|---|---|
Arkansas | Fulton | Sediment | 1 | 48 |
Arkansas | Fulton | Water | 2 | 130 |
Arkansas | Randolph | Water | 2 | 174 |
Arkansas | Sharp | Sediment | 1 | 39 |
Missouri | Butler | Water | 1 | 202 |
Missouri | Ripley | Water | 1 | 156 |
Missouri | Wayne | Sediment | 1 | 11 |
Poplar Bluff Quadrangle NURE Summary
Geochemex, a subcontractor for the Bendix Field Engineering Corporation, produced a uranium exploration summary for the Poplar Bluff quadrangle (PGJ/F-102(82)). As part of this process, 59 rock, 47 ground-water, 123 soil, and 161 well cutting samples were collected and analyzed for uranium by fluorometry. The rock, well cutting, and soil samples were also analyzed for an additional 29 elements and the ground-water samples were analyzed for an additional 4 elements. One area of uranium favorability was delineated within the quadrangle. This area lies in the delta-platform facies of the Cretaceous McNairy Sand. Data tables were only found on the microfiche accompanying the report.
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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 1.30: September 11, 2001
Version 1.41: February 23, 2006
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