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National Geochemical Database: Sediment

Geochemistry of sediments from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are of stream sediment in the continental US and Alaska.

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ngdbsed.kml (uncompressed 216 Mbytes)

ngdbsed.kmz (compressed 8.4 Mbytes)

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https://mrdata.usgs.gov/services/ngdbsed (WMS, version 1.3.0)

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ngdbsed-csv.zip (Shapefile with a URL to the full report online, all attributes as included CSV files 159 MB zip expands to 1.35 GB)

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Outline - Questions & Answers - Plain text - XML

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