OFR 97-492: Sherbrooke Quadrangle NURE HSSR Study
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[See History of NURE HSSR Program for a summary of the entire program.]
Maine
Subcontractors for the Savannah River Laboratory (SRL) collected at least 2,924 stream-sediment, 2,039 surface-water, and 1,938 ground-water samples from the southern half of Maine as part of the NURE Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) program. Two different sampling protocols were used in Maine. Using the SRL Eastern protocol (SRL-E), 1,218 stream-sediment, 1,218 surface-water, and 636 ground-water samples were collected from Androscoggin, Cumberland, Franklin, Kennebec, Oxford, Somerset Counties in October and November of 1977. This area included portions of the Bangor, Bath, Lewiston, Millinocket, Portland, and Sherbrooke 1:250,000-scale quadrangles. Another 1,706 stream-sediment, 821 surface-water, and 1302 ground-water samples were collected by subcontractors using SRL Western protocols (SRL-W) between May and August of 1980 within the Bangor, Bath, and Eastport 1:250,000-scale quadrangles. These samples were sent to SRL for determinations of uranium and additional elements (16 in sediments and 9 in waters) by Neutron Activation Analysis. SRL was able to analyze 1,230 sediments and 3,977 waters from Maine. The analytical and site location data for all Maine samples were released in the New England Data Report [GJBX-107(82)]. Within the Maine portion of the Sherbrooke quadrangle, only 1 ground-water sample was collected (SRL-E protocol) and analyzed.
SRL sent the 1,218 SRL-E sediment samples from Maine to an unnamed contract laboratory for "Supplemental Analyses." Supplemental analytical determinations for up to 23 elements were reported for 1,214 of these samples in the New England Data Report [GJBX-107(82)]. The digital data file accompanying this report includes Supplemental Analyses for no sediment samples from Maine within the Sherbrooke quadrangle.
New Hampshire
Subcontractors for the Savannah River Laboratory (SRL) collected at least 1,699 stream-sediment, 1,694 surface-water, and 884 ground-water samples from New Hampshire as part of the NURE Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) program. Samples were collected on a county-by-county basis from the entire state between July 1977 and January 1978. This area included portions of the Albany, Boston, Glens Falls, Lake Champlain, Lewiston, Portland, and Sherbrooke 1:250,000-scale quadrangles. The samples were sent to SRL for determinations of uranium and additional elements (16 in sediments and 9 in waters) by Neutron Activation Analysis. SRL was able to analyze 1,696 sediments and 2,576 waters from New Hampshire. The analytical and site location data for all New Hampshire samples were released in the New England Data Report [GJBX-107(82)]. A total of 68 stream-sediment, 68 surface-water, and no ground-water samples were collected within the New Hampshire portion of the Sherbrooke quadrangle. SRL was able to analyze all of the sediment and water samples from the New Hampshire portion of the Sherbrooke quadrangle.
SRL sent the 1,699 sediment samples from New Hampshire to an unnamed contract laboratory for "Supplemental Analyses." Supplemental analytical determinations for up to 23 elements were reported for 1,690 of these samples in the New England Data Report [GJBX-107(82)]. The digital data file accompanying this report includes Supplemental Analyses for 66 of the 68 sediment New Hampshire samples within the Sherbrooke quadrangle.
Vermont
Subcontractors for the Savannah River Laboratory (SRL) collected at least 1,677 stream-sediment, 1,663 surface-water, and 972 ground-water samples from Vermont as part of the NURE Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) program. Samples were collected on a county-by-county basis from the entire state between August 1977 and March 1978. This area included portions of the Albany, Glens Falls, Lake Champlain, Lewiston, and Sherbrooke 1:250,000-scale quadrangles. The samples were sent to SRL for determinations of uranium and additional elements (16 in sediments and 9 in waters) by Neutron Activation Analysis. SRL was able to analyze 1,674 sediments and 2,633 waters from Vermont. The analytical and site location data for all Vermont samples were released in the New England Data Report [GJBX-107(82)]. A total of 3 stream-sediment, 3 surface-water, and no ground-water samples were collected within the Vermont portion of the Sherbrooke quadrangle. SRL was able to analyze all of the sediment and water samples from the Vermont portion of the Sherbrooke quadrangle.
SRL sent 1,632 sediment samples from Vermont to an unnamed contract laboratory for "Supplemental Analyses." Supplemental analytical determinations for up to 23 elements were reported for 1,631 of these samples in the New England Data Report [GJBX-107(82)]. The digital data file accompanying this report did not include any Supplemental Analyses for sediment samples from Vermont within the Sherbrooke quadrangle.
SRL: Sherbrooke Quadrangle
SRL did not release a separate report for the Sherbrooke quadrangle.
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 Sherbrooke quadrangle samples.
Laboratory Analysis | Sediments | Waters |
---|---|---|
Only SRL | 5 | 72 |
Both SRL and Supplemental Labs | 66 | 0 |
None | 0 | 0 |
Total Samples | 71 | 72 |
Total Data Records | 71 | 72 |
The following is a list of all sample types collected and reported for NURE studies in the Sherbrooke quadrangle.
Sediment Sample Type | Number of Samples | Water Sample Type | Number of Samples |
---|---|---|---|
Wet Streams | 71 | Streams | 71 |
Springs | 1 | ||
Total Sediments | 71 | Total Waters | 72 |
These Sherbrooke quadrangle samples were analyzed by one or more of the following methods:
Sediment Samples
Water Samples
Sediment Records
The Lewiston quadrangle sediment data consist of reformatted records from the Maine, New Hampshire, and Vermont portions of the New England GJBX-107(82) Data Report. The following problems were found and addressed during the comparison and reformatting stages for the Sherbrooke quadrangle sediment data:
Water Records
The Sherbrooke quadrangle water data consist of reformatted records from the Maine, New Hampshire, and Vermont portions of the New England GJBX-107(82) Data Report. The following problems were found and addressed during the comparison and reformatting stages for the Sherbrooke 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).
Sherbrooke Quadrangle Sediment Data - 71 records
Sherbrooke Quadrangle Water Data - 72 records
In the eastern United States, SRL collected samples primarily by county. Often, not all counties within a quadrangle were completely sampled. Sample coverage of the U.S. lands in the Sherbrooke quadrangle is not complete and only includes samples from Franklin County, Maine; Coos County, New Hampshire; and Essex County, Vermont. The laboratory and analytical methods used also may vary by county such that adjacent counties often have very different analytical coverage.
None found.
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Frequently Asked Questions Concerning NURE Data
Home Page: USGS National Geochemical Database - NURE HSSR data
Page written by Steven M. Smith.
Contact: Steven M. Smith (smsmith@usgs.gov)
Version 1.41: February 23, 2006
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