Home Archived April 23, 2019

Understanding Our Planet Through Chemistry

Maps of Metals in Stream Sediments

Many maps, such as the map of lead in stream sediments of Colorado, are useful for both resource evaluations and environmental assessments.

Map showing lead concentrations in Colorado stream sediments. This map of lead in Colorado stream sediments was generated with existing data from the National Geochemical Data Base. It shows the presence of a geochemical halo from the Colorado Mineral Belt and also the lead caused by industry in some cities. [20k]

Return to "IIIb. Geographic Chemistry: National Geochemical Data Base."

Accessibility FOIA Privacy Policies and Notices

USAGov logo U.S. Department of the Interior | U.S. Geological Survey
URL: https://minerals.cr.usgs.gov/gips/na/7process.html
Page Contact Information: CMERSC Webmaster
Page Last Modified: 22 April 2019