Geochemical and fallout radionuclide data for sediment source fingerprinting studies of the Loutsenhizer Arroyo and Sunflower Drain watersheds in western Colorado
Dates
Publication Date
2023-01-24
Start Date
2018-12-01
End Date
2020-11-30
Citation
Bern, C.R., Williams, C.A., Smith, C.G., Henneberg, M., and Qi, S.L., 2023, Geochemical and fallout radionuclide data for sediment source fingerprinting studies of the Loutsenhizer Arroyo and Sunflower Drain watersheds in western Colorado: U.S. Geological Survey data release, https://doi.org/10.5066/P99EZZJK.
Summary
This data release includes geochemical and fallout radionuclide data for suspended sediments and potential sediment source types for the Loutsenhizer Arroyo and Sunflower Drain watersheds in western Colorado. Suspended sediments were collected by passive samplers deployed in the stream channel of the watershed outlets during four study periods between August 2018 and August 2019. Potential sediment source type samples were collected in the watersheds in duplicate using compositing techniques that targeted the top 5 centimeters of soil. The four potential sediment source-types were: agricultural fields, rangeland, arroyo walls, and streambanks. Source type samples were wet sieved to less than (<) 63 microns (µm) to target the size fraction [...]
Summary
This data release includes geochemical and fallout radionuclide data for suspended sediments and potential sediment source types for the Loutsenhizer Arroyo and Sunflower Drain watersheds in western Colorado. Suspended sediments were collected by passive samplers deployed in the stream channel of the watershed outlets during four study periods between August 2018 and August 2019. Potential sediment source type samples were collected in the watersheds in duplicate using compositing techniques that targeted the top 5 centimeters of soil. The four potential sediment source-types were: agricultural fields, rangeland, arroyo walls, and streambanks. Source type samples were wet sieved to less than (<) 63 microns (µm) to target the size fraction likely to be entrained in streamflow as suspended sediments. Geochemical analyses were conducted by AGAT Laboratories (Canada) and data are reported for concentrations of 42 elements along with total carbon, carbonate, and organic carbon. Selenium concentrations were measured by hydride generation atomic absorption spectroscopy. Fallout radionuclide analyses were conducted at the USGS St. Petersburg Coastal and Marine Science Center by gamma-ray spectrometry methods. Activity ratios for total lead-210 to radium-226 and ratios of radium-226 to uranium-238 are reported along with propagated uncertainty for the ratios.
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SedFingerprint_FGDC_Metadata_V2.xml Original FGDC Metadata
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DataDictionary.csv
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SedFingerprintData.csv
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Related External Resources
Type: Related Primary Publication
Bern, C.R., Williams, C.A., and Smith, C.G., 2023, Source contributions to suspended sediment and particulate selenium export from the Loutsenhizer Arroyo and Sunflower Drain watersheds in Colorado: U.S. Geological Survey Scientific Investigations Report 2023–5056, 32 p., https://doi.org/10.3133/sir20235056.
The data were collected to support a sediment fingerprinting study of two watersheds (Loutsenhizer Arroyo and Sunflower Drain) and assess the relative contributions of potential sediment source types to the suspended sediments exported via streamflow. The data might be of use to future researchers as representing the geochemical composition of surface soils in the region.
