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These data were collected using field portable (handheld) X-ray fluorescence (pXRF) equipped with a 4-watt Ta/Au X-ray tube. Samples of surficial alluvium, rock, and archived core material from existing auger- or sonic-drilled monitoring wells in Hinkley Valley and the adjoining Water Valley, 140 kilometers (km) northeast of Los Angeles, California, were measured as part of an investigation of naturally-occurring and anthropogenic hexavalent chromium, Cr(VI), concentrations in local groundwater. Surficial alluvium samples were collected from small stream channels draining distinct geologic units, or from previously mapped river deposits, and generally consisted of silt, sand, and granules to small pebbles. Twigs...
Categories: Data;
Tags: Arsenic,
California,
Chromium,
Geochemistry,
Hinkley, All tags...
San Bernardino County,
Uranium,
Western Mojave Desert,
X-ray fluorescence,
environment, Fewer tags
These data were collected using field portable (handheld) X-ray fluorescence (pXRF) equipped with a 4-watt Ta/Au X-ray tube. Samples of surficial alluvium, rock, and archived drill cuttings from monitoring wells in the western part of the Mojave Desert, 60 to 210 kilometers (km) northeast of Los Angeles, California, were measured using as part of an investigation of naturally-occurring trace elements dissolved in groundwater. Surficial alluvium samples were collected from small stream channels draining distinct geologic units, or from previously mapped river deposits, and generally consisted of silt, sand, and granules to small pebbles. Twigs and other detritus were removed prior to measurement. Rocks were collected...
Categories: Data;
Tags: Arsenic,
Barstow,
California,
Chromium,
El Mirage, All tags...
Geochemistry,
Joshua Tree,
Newberry Springs,
Ridgecrest,
San Bernardino County,
Twentynine Palms,
Uranium,
Victorville,
Western Mojave Desert,
X-ray fluorescence,
environment, Fewer tags
These data were collected using field portable (handheld) X-ray fluorescence (pXRF) equipped with a 4-watt Ta/Au X-ray tube on two National Institute of Standards and Technology (NIST) certified standard reference materials 2710a and 2711a, a U.S. Geological Survey (USGS) certified standard reference material BHVO-2, and a silicon dioxide blank. These quality assurance data were collected as part of detailed pXRF studies in Hinkley and Water Valleys, 140 kilometers (km) northeast of Los Angeles, California, and as part of a regional geochemical survey in the western Mojave Desert, between 60 to 210 km northeast of Los Angeles. Measurements on National Institute of Standards and Technology (NIST) and U.S. Geological...
Categories: Data;
Tags: Arsenic,
Barstow,
California,
Chromium,
El Mirage, All tags...
Geochemistry,
Hinkley,
Joshua Tree,
Newberry Springs,
Ridgecrest,
San Bernardino County,
Twentynine Palms,
Uranium,
Victorville,
Western Mojave Desert,
X-ray fluorescence,
environment, Fewer tags
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