National Geochemical Database: Sediment
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资源简介：
Geochemical analysis of sediment samples from the National
Geochemical Database. Primarily inorganic elemental concentrations,
most samples are of stream sediment in the continental US and
Alaska. Samples were collected and analyzed over many decades,
beginning in the 1960s, though some samples may have been collected
earlier.
创建时间：
2016-10-29
