J. G Crock

• Element concentrations and trends for moss, lichen, and surface soils in and near Denali National Park and Preserve, Alaska
• Four reference soil and rock samples for measuring element availability in the western energy regions
• Listing of geochemical data and assessment of variability for soils and alfalfa of the Uncompahgre Project Area, Colorado
• Major, minor, and trace elements in samples from the Wheeler wilderness study area, Colorado, as determined by inductively coupled argon plasma-atomic emission spectrometry
• Regional geochemical results from the analyses of rock, water, soil, stream sediment, and vegetation samples
• The determination of trace-level antimony in geological materials by semi-automated hydride generation-atomic absorption spectroscopy
• The determination of trace-level arsenic in geological materials by semi-automated hydride generation-atomic absorption spectroscopy
• Water-extractable geochemical data for native and irrigated soils from the Kendrick Reclamation Project Area, Wyoming, 1988-89