USGS - science for a changing world

Science Topics

Maps, Imagery, and Publications Hazards Newsroom Education Jobs Partnerships Library About USGS Podcasts/RSS
You are here: Sciences > Earth sciences
Help
Geochemistry
Study of the distribution of chemical elements and natural compounds on the earth and in the atmosphere and the chemical processes that affect the earth.
Subtopics:
Soil chemistry (4 items)
Water chemistry (120 items)

Geochemical anomaly maps (9 items)
Related topics:
Results 31 - 40 of 175 listed by similarity [list alphabetically]
Carbon dioxide and helium discharge from Mammoth Mountain, Long Valley caldera, California [More info]
An explanation of toxic carbon dioxide emissions at Mammoth Mountain in Long Valley caldera, and a description of magmatic helium discharge at the Mammoth Mountain fumarole with photos, maps, and links to other studies.
Carolina slate belt gold deposits in Virginia, North Carolina, South Carolina, and Georgia [More info]
Report of research on the Carolina slate belt and gold deposits in Virginia, North Carolina, South Carolina, and Georgia with geologic mapping, mineralogic, geochemical, and fluid evolution studies, radiogenic dating, and stable isotope studies.
Central Region Mineral Resources Team [More info]
Site for programs of the Central Region Mineral Resources Team with links to products, personnel, projects and programs of land stewardship, regional geochemistry, analytical chemistry, geology and resources assessment and remote sensing.
PDF Characterizing contaminant concentrations with depth by using the USGS well profiler in Oklahoma, 2003-9 [More info]
Use of specialized sampling equipment to study public water supply wells, with examples showing Arsenic in two aquifers.
PDF Chloride control and monitoring program in the Wichita River Basin, Texas, 1996-2009 [More info]
Chloride concentrations in this river have historically been high due to natural saltwater springs and seeps from geologic formations. We monitor the water to help assess the progress of human efforts designed to mitigate this problematic salinity.
Crustal Imaging and Characterization Team [More info]
Crustal imaging and characterization home with links to projects on earth science technologies including geophysical, geochemical, and isotope studies, online publications and data, and newsletter Minerals News.
Eastern Mineral Resources meteorite research [More info]
Description of chemical research on meteorites to understand the formation processes of chondrite meteorites and chondrules. Site has link to issues of Meteoritical Bulletin and signup for e-mail notification of new meteorites.
PDF Environmental effects of historical mining in the Animas River watershed, southwestern Colorado [More info]
History and summary maps showing metal concentrations downstream of the mining area.
Environmental studies of the World Trade Center area after the September 11, 2001 attack [More info]
Report describing the results of an interdisciplinary environmental study of the World Trade Center (WTC) area after the attack on September 11, 2001. The investigations included imaging spectroscopy mapping and laboratory analysis.
PDF Evaluation of fecal contamination by human and ruminant sources in upper Fountain Creek, Colorado, 2007-2008, by using multiple lines of evidence: [More info]
Microbial source tracking analysis of water sampled supports the argument that birds are the primary source of fecal contamination during the warm season.
Result pages:Previous 1 2 3 4 5 6 7 8 9 ... NextAll
Alphabetical Index of Topics a b c d e f g h i j k l m n o p q r s t u v w x y z

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.usgs.gov/science//science/science.php?term=437&b=30&n=10
Page Contact Information: Ask USGS