OFR 97-492: Wichita Falls Quadrangle NURE HSSR Study
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[See History of NURE HSSR Program for a summary of the entire program.]
During the Spring (April - July) and Fall (October) of 1976, a total of 1,999 sediment and 1,674 water samples were collected from 1,046 locations over parts of the Butte, Dillon, and White Sulphur Springs quadrangles in western Montana for the Los Alamos Scientific Laboratory (LASL) Boulder Batholith Pilot Study. Within the White Sulphur Springs quadrangle, 321 sediments (various fractions of spring, stream, and pond sediment samples) and 92 waters (spring, stream, pond, and well water samples) were collected. The samples were analyzed by LASL for uranium content and the analytical data were released in the GJBX-56(78) report.
The Boulder Batholith pilot study had several objectives:
According to the GJBX-56(78) report:
The results of this study show that, at least in this area, treatments such as filtration and acidification made very little difference in the amount of uranium measured in the waters. Changes in mean pH, specific conductance, and uranium values in waters taken in the spring sampling period and the fall sampling period were surprisingly small in this area. No definite correlation between the pH and uranium content was apparent; however, the range of measured pH values in this area was quite narrow. A distinct correlation between high uranium and high specific conductance was shown by the data. The analyses of sediment sieved to four size fractions indicated that the -100 mesh and -230 mesh fractions generally contained the highest mean uranium contents. Finally, it was shown that in this area the standard LASL HSSR methods were quite effective in delineating areas where uranium mineralization is known to occur.
Between August and November 1977, the remainder of the White Sulphur Springs quadrangle was sampled as part of the Los Alamos Scientific Laboratory White Sulphur Springs Quadrangle NURE Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) study. Totals of 1,763 sediments (1,588 new samples plus 175 samples from the pilot study) and 830 water (745 new samples plus 85 samples from the pilot study) were analyzed by LASL for uranium and up to 43 additional elements. The analytical data were released by Bendix Field Engineering Corp. in the GJBX-266(81) report (microfiche).
The following is a list of all sample types collected and reported for NURE studies in the White Sulphur Springs quadrangle.
|Sediment Sample Type||Number of Samples||Water Sample Type||Number of Samples|
|Dry Springs||7||Natural Ponds||1|
|Wet Natural Ponds||1|
|Total Sediments||1,909||Total Waters||837|
These White Sulphur Springs quadrangle samples were analyzed by one or more of the following methods:
The data in the NEW-FORMAT NURE data files consist of records from the GJBX-56(78) report of the pilot study combined with records from the GJBX-266(81) White Sulphur Springs quadrangle report. In total, the reformatted sediment data contain 1909 records; 146 Pilot study samples analyzed only for uranium plus 175 Pilot study samples and 1588 new samples used in the quadrangle study and analyzed for uranium and up to 43 additional elements. The reformatted water data contain 837 records; 7 Pilot study samples analyzed only for uranium plus 85 Pilot study samples and 745 new samples used in the quadrangle study and also analyzed only for uranium. These different groups of records can be distinguished in the NEW-FORMAT NURE data files by using the TAPEFILE and STUDY fields.
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).
White Sulphur Springs Quadrangle Sediment Data - 1,911 records
White Sulphur Springs Quadrangle Water Data - 842 records
The data in the sediment database includes samples collected by sieving to multiple sieve fractions (See the SAMPTYP coding explanation in the On-Line Manual for New-Format NURE HSSR Data Files for descriptions of different Sample Types). Analytical data may not be directly comparable for sediment samples with different sieve fractions.
When White Sulphur Springs quadrangle data are combined with other quadrangles for regional studies, it has been the experience of previous users that the water SAMPTYP's 06, 07, and 08 and the sediment SAMPTYP's 11, 12, 15, and 99 are the most useful and ubiquitous sample media in this quadrangle.
A summary evaluation for the White Sulphur Springs quadrangle was released by the Bendix Field Engineering Corporation of Grand Junction, Colorado [PGJ/F-136(82)]. Included in this report are 247 rock, 32 stream sediment, 19 stream and spring water, and 116 well water samples as well as 80 rock, 183 stream-sediment, and 152 water samples from previous USGS studies of the quadrangle. The USGS Reports that the additional samples were taken from are referenced in the text of the summary report. The multielement data for the samples was published only as microfiche appendices to the summary report.
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Version 1.00: September 11, 1998
Version 1.10: July 29, 1999
Version 1.20: August 07, 2000
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