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Field portable X-ray fluorescence and associated quality control data for the western Mojave Desert, San Bernardino County, California

Dates

Date Collected
2015-02-01
End Date
2018-05-23
Publication Date

Citation

Groover, K.D., and Izbicki, J.A., 2018, Field portable X-ray fluorescence and associated quality control data for the western Mojave Desert, San Bernardino County, California: U.S. Geological Survey data release, https://doi.org/10.5066/P9CU0EH3.

Summary

These data on the concentrations of 27 selected elements were collected using a field portable (handheld) X-ray fluorescence (pXRF) instrument (Groover and Izbicki, 2016) equipped with a 4-watt Ta/Au X-ray tube on samples of 1) surficial alluvium, 2) rock, and 3) archived core material and drill cuttings from monitoring wells across an approximately 14,300 square kilometer area in the western part of the Mojave Desert, between 60 to 210 kilometers (km) northeast of Los Angeles, California. These samples were measured using a pXRF as part of a regional-scale investigation of naturally-occurring trace elements (including arsenic, chromium, and uranium) dissolved in groundwater (Groover and Izbicki, 2018), and a local-scale investigation [...]

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Purpose

These geochemical survey data and associated descriptive information for samples of alluvium, rock, drill cuttings and core material were used to help understand regional-scale and local-scale changes in groundwater chemistry in the western Mojave Desert, California. Quality control measurements done on standard reference materials were used to validate the accuracy and precision of the data. Data are sufficient for evaluating changes in concentrations of 27 selected elements in surficial alluvium, rock, and aquifer material in the western Mojave Desert, but some caution should be used when comparing these data to other types of geochemical data from different matrices or methods having different levels of accuracy and precision. The data may be used to derive maps, perform geospatial analyses, or to evaluate differences in geochemistry compared to regional or national geochemical databases. The information is intended to meet the needs of a wide community of users including State and Federal agencies, private industry, and the general public.

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ScienceBase WMS

Communities

  • USGS California Water Science Center
  • USGS Data Release Products

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Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9CU0EH3

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