← Back to DatasetsDataset

Sulfur x-ray absorption spectroscopy data from bedrock shale, soil, and floodplain sediment from the East River, Colorado watershed.

Creators: Fox, P, Carrero, SORCID, Anderson, C, Dewey, C, Keiluweit, M, Naughton, H, Nico, P
Year: 2022
DOI: 10.15485/1860454
Location: The East River (ER) is a snow‐dominated, headwater basin of the Upper Colorado River Basin (UCRB) located in the western United States. The ER is the designated testbed of Lawrence Berkeley National Laboratory's Watershed Function Scientific Focus Area (WFSFA). Through WFSFA, observational networks have been established to measure stream discharge and precipitation chemistry. The ER is considered representative of many snow‐dominated headwaters of the Rocky Mountains. The study domain encompasses nearly 85 square km, a 1.4‐km vertical drop in elevation (4,120 to 2,760 m) and pristine alpine, subalpine, montane, and riparian ecosystems. The ER contains high‐energy mountain streams to low‐energy meandering floodplains and is eroding primarily into the Cretaceous, carbon‐rich, marine shale of the Mancos Formation. Additional metadata on specific locations within the watershed are provided in the following related data package: Varadharajan C. et al. (2020) doi:10.15485/1660962
Temporal extent: 1900-01-01 to 2022-07-22
Bounding box: 38.880°N to 39.034°N, -107.050°W to -106.880°W
Publisher: RMBL
Tags: XANES, speciation, weathering , pyrite, weathering, CATEGORICAL:NONE Spectroscopy, Alpine & Subalpine Ecology, Genetics & Evolution, Hydrology & Watersheds, Snow & Ice, Geology & Tectonics, Soil Science, Geochemistry & Isotopes, Weather & Atmospheric Science, Gunnison Basin, Research Programs

Description

This dataset includes sulfur x-ray absorption near edge spectroscopy (XANES) data collected on solid samples as a part of the Watershed Function Scientific Focus Area (SFA) located in the Upper Colorado River Basin. The data were collected in order to investigate the speciation of sulfur and degree of shale weathering in solid samples across the watershed and their impact on riverine export of sulfate. Solid samples, including shale, hillslope soil, and floodplain sediment samples collected in 2016-2018, were analyzed by bulk XANES. Density fractions of hillslope soil, including a light fraction representing particulate organic matter and a heavy fraction representing minerals are also analyzed by bulk XANES. Micro-focused XANES on a weathered shale sample (PLM6, 2.7 m) was also performed. Sample locations are included in the 'sample meta data.csv' file, and XANES data for each sample type are included in csv files.

Local Knowledge Graph (12 entities)

Loading graph...