National Geochemical Database: Sediment

Name: National Geochemical Database: Sediment
Creator: U.S. Geological Survey, Mineral Resources Program
License: https://creativecommons.org/publicdomain/mark/1.0/

U.S. Geological Survey, Mineral Resources Program

License: Public domain
Commercial: Yes
Format: CSV, Several
Coverage: United States, including Alaska (98.3% of 335,026 samples); a small share of samples from about 30 other countries and ocean areas (bbox is the full data extent)

Last updated: Added to findgis 31 Oct 2026 · Update frequency Irregular

Source and attribution

Publisher

U.S. Geological Survey, Mineral Resources Program

License

Public domain

Commercial use: Yes
Attribution required: No
Modification allowed: See publisher
Redistribution allowed: See publisher
Share-alike: No

U.S. Government work (17 U.S.C. 105); public domain. USGS-authored information is in the public domain (https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits); no commercial-use restriction. Credit to USGS requested.License text

Region

United StatesUS

Type

Vector

Download

ngdbsed-csv.zip (CSV, 165.6 MB)ngdbsed.kmz (Several, 8.8 MB)

Service

WMShttps://mrdata.usgs.gov/services/ngdbsedWFShttps://mrdata.usgs.gov/services/wfs/ngdbsed

Extent

-179.36667-49.81222222179.942574.90833333West, south, east, north. Data extent.

View on CartaTerra

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