OFR 97-492: Manteo Quadrangle NURE HSSR Study
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[See History of NURE HSSR Program for a summary of the entire program.]
North Carolina
Subcontractors for the Savannah River Laboratory (SRL) collected at least 6,666 stream-sediment, 295 surface-water, and 5,778 ground-water samples within 100 counties from North Carolina as part of the NURE Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) program. The sediment samples were collected during June - December 1976; July - August 1977; and April - May 1978, and water samples were collected during December 1976 - August 1977 and June - July 1978. Sample coverage included portions of the Beaufort, Charlotte, Chattanooga, Currituck Sound, Florence, Georgetown, Greensboro, Greenville, Johnson City, Knoxville, Manteo, Norfolk, Raleigh, Rocky Mount, Rome, Spartanburg, and Winston-Salem 1:250,000-scale quadrangles. (A total of 1 stream-sediment and 2 ground-water samples were collected within the Manteo quadrangle.) These samples were sent to SRL for analysis of uranium and additional elements (16 in sediments and 9 in waters). SRL was able to analyze 6,597 sediments and 6,040 waters from North Carolina; this includes 1 sediment and 12 water samples from the Manteo quadrangle. The analytical and site location data for all North Carolina samples were released in the North and South Carolina Data Report [GJBX-102(82)].
SRL sent 4,677 sediment samples from North Carolina to an unnamed contract laboratory for "Supplemental Analyses." Supplemental analytical determinations for up to 23 elements were reported for 4,660 of these samples in the North and South Carolina Data Report [GJBX-102(82)]. The digital data file accompanying this report does not include any Supplemental Analyses for North Carolina sediment samples within the Manteo quadrangle.
SRL: Rocky Mount and Manteo Quadrangles
SRL released a separate quadrangle report for the Rocky Mount and Manteo NTMS quadrangle, which includes data for 501 stream-sediment, 859 ground-water, and 28 stream-water samples (1 stream-sediment and 2 ground-water samples collected within the Manteo quadrangle). With minor differences, these sample data are the same as the that for corresponding samples found in the North and South Carolina State reports. SRL released the analytical data as the Rocky Mount and Manteo Quadrangles GJBX-16(81) Preliminary Basic Data Report. 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 Manteo quadrangle samples.
Laboratory Analysis | Sediments | Waters |
---|---|---|
Only SRL | 1 | 12 |
Total Samples | 1 | 12 |
Total Data Records | 1 | 12 |
The following is a list of all sample types collected and reported for NURE studies in the Manteo quadrangle.
Sediment Sample Type | Number of Samples | Water Sample Type | Number of Samples |
---|---|---|---|
Wet Stream | 1 | Wells | 12 |
Total Sediments | 1 | Total Waters | 12 |
These Manteo quadrangle samples were analyzed by one or more of the following methods:
Sediment Samples
Water Samples
Sediment Records
The Manteo quadrangle sediment data consist of reformatted records from the Rocky Mount and Manteo Quadrangles GJBX-16(81) Data Report. These records were compared with corresponding sample records from the North Carolina portion of the North and South Carolina [GJBX-102(82)] Data Report. The following problems were found and addressed during the comparison and reformatting stages for the Manteo quadrangle sediment data:
Water Records
The Manteo quadrangle water data consist of reformatted records from the Rocky Mount and Manteo Quadrangles GJBX-16(81) Data Report. These records were compared with corresponding sample records from the North Carolina portion of the North and South Carolina [GJBX-102(82)] Data Report. The following problems were found and addressed during the comparison and reformatting stages for the Manteo 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).
Manteo Quadrangle Sediment Data - 1 record
Manteo Quadrangle Water Data - 12 records
In the eastern United States, SRL collected samples primarily by county. Often, not all counties within a quadrangle were completely sampled. Sample coverage in the Manteo quadrangle is limited to only a couple samples collected from Dare County in North Carolina. The laboratory and analytical methods used also may vary by county such that adjacent counties often have very different analytical coverage.
None found.
Back to North Carolina NURE data
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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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