OFR 97-492: Candle Quadrangle NURE HSSR Study
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>> Pubs Warehouse > OF 97-492 > State Coverage > Alaska NURE data > Candle Quadrangle
[See History of NURE HSSR Program for a summary of the entire program.]
During the summer of 1975, the Alaska State Department of Natural Resources, Division of Geological and Geophysical Surveys (DGGS) conducted a uranium reconnaissance study within 13 Alaska quadrangles. From this study, 644 sediment and 601 water samples collected from 694 locations were sent to the Los Alamos Scientific Laboratory (LASL) for analysis. LASL analyzed these samples for uranium and the analytical data were released in the GJBX-79(78) report. This report includes results for 137 sediment samples and 142 water samples collected from 148 locations within the Candle quadrangle.
Geochemical samples were collected during July and August of 1976 as part of the Los Alamos Scientific Laboratory (LASL) NURE Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) study of the Seward Peninsula and vicinity. Totals of 2,084 sediment and 2,025 water samples were collected from 2,188 locations within the Teller, Bendeleben, Candle, and Kateel River quadrangles. All of the samples were analyzed for uranium and the results were published in the Seward Peninsula and vicinity GJBX-85(78) report. This report includes results for 708 sediment and 708 water samples collected from 735 locations within the Candle quadrangle.
After releasing the GJBX-85(78) Seward Peninsula report, LASL analyzed the sediment samples for up to 43 additional elements. LASL was unable to complete the Candle quadrangle data release report. The data were sent to the Bendix Field Engineering Corporation in Grand Junction, Colorado and subsequently published as the microfiche Candle Quadrangle HSSR GJBX-151(82) report. This report includes uranium data for sediment and water samples previously published in the Seward Peninsula GJBX-85(78) report plus the multielement data for the sediment samples. The microfiche Bendix GJBX-151(82) report for the Candle Quadrangle HSSR study does not give any details on the sample collection or analytical methods used on these samples.
The following is a list of NURE sample types collected in the Candle quadrangle.
| Sediment Sample Type | Number of Samples | Water Sample Type | Number of Samples |
|---|---|---|---|
| Wet Streams (< 100 mesh) | 621 | Streams | 765 |
| Wet Streams (< 80 mesh) | 133 | Lakes | 85 |
| Dry Streams (< 100 mesh) | 14 | ||
| Dry Streams (< 80 mesh) | 4 | ||
| Wet Lakes (< 100 mesh) | 73 | ||
| Total Sediments | 845 | Total Waters | 850 |
These Candle quadrangle samples were analyzed by one or more of the following methods:
Sediment Samples
Water Samples
The data in the NEW-FORMAT NURE data sediment file consist of 708 reformatted sediment records from the Candle quadrangle GJBX-151(82) report and 137 reformatted sediment records from the Alaska DGGS GJBX-79(78) report. The data in the NEW-FORMAT NURE data water file consist of 708 reformatted water records from the Candle quadrangle GJBX-151(82) report and 142 reformatted water records from the Alaska DGGS GJBX-79(78) report. Any changes in the data or problems found are noted in the REFORMAT comment field.
The sediment records from the earlier Seward Peninsula GJBX-85(78) study were the same as corresponding records from the later Candle quadrangle GJBX-151(82) report with the exception of uranium data. The uranium results from the Seward Peninsula GJBX-85(78) study were reported to the tenths place while the results from the Candle quadrangle GJBX-151(82) report were reported to the hundredths place. Differences between the values from the two reports are minor but they are more than can be due to rounding. In order to reduce the total number of records, the uranium values from the GJBX-85(78) study report were added to the records from the Candle quadrangle GJBX-151(82) report. The uranium values from the Seward Peninsula GJBX-85(78) study report can be found in the U_XX_PPB field and the analytical method used in the U_XX_MTHD field. These records are identified by a comment in the REFORMAT field.
With the exception of the uranium data, the 708 water records from the earlier Seward Peninsula GJBX-85(78) study were the same as the corresponding records from the later Candle Quadrangle HSSR GJBX-151(82) report. Uranium values for some records differ in the hundredths place. It appears that the uranium results were rounded to the hundredths place in the earlier Seward Peninsula GJBX-85(78) report but were truncated to the hundredths place in the later Candle Quadrangle HSSR GJBX-151(82) report. No explanation for the difference was found in the reports and the difference was not noted in the REFORMAT comment field. Only the records from the Candle Quadrangle HSSR GJBX-151(82) report were retained in the NEW-FORMAT NURE water data file. The slightly different values for uranium in waters from the Seward Peninsula study can be found in the GJBX-85(78) report.
Values for dissolved oxygen at 76 sample sites from the Seward Peninsula and vicinity study were added from the GJBX-85(78) report and can be found in the O_DISS field. A comment in the REFORMAT field identifies these 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 websites, 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).
Candle Quadrangle Sediment Data - 842 records
Candle Quadrangle Water Data - 847 records
Water samples from this quadrangle are reported to have been acidified with nitric acid but NOT filtered in the field.
LASL compiled all of the regional HSSR data from Alaskan NURE studies and produced a report [GJBX-32(83] that graphically displays the distribution of selected elements for most of the State. No additional geochemical data were released with this report.
Back to Alaska NURE data
Frequently Asked Questions Concerning NURE HSSR Data
Home Page: USGS National Geochemical Database - NURE HSSR data
Page written by Andrew W. Holt and Steven M. Smith
Contact: Steven M. Smith (smsmith@usgs.gov)
Version 1.20: August 07, 2000
Version 1.30: September 11, 2001
Version 1.40: January 13, 2006
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