National Geochemical Database: Sediment

Online link https://mrdata.usgs.gov/ngdb/sediment/
Description 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.
Originators U.S. Geological Survey
Metadata Questions and answers

Related topics

States or counties

Schematic map showing sample density in the conterminous US
Schematic map showing sample density in the conterminous US

Geospatial Web Services (OGC)

Format Content Service URL
WMS Geochemical sample locations with analytical results https://mrdata.usgs.gov/services/ngdbsed?request=GetCapabilities&service=WMS&version=1.3.0

Download data

Format Content Download package
Shapefile Simple shapefile with a URL to the full report of each location, and all attributes included as CSV files https://mrdata.usgs.gov/ngdb/sediment/ngdbsed-csv.zip
CSV Simple shapefile with a URL to the full report of each location, and all attributes included as CSV files https://mrdata.usgs.gov/ngdb/sediment/ngdbsed-csv.zip