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.
Groundwater quality in the Southern Sierra Nevada, California [ More info] Recent study indicating inorganic constituents as the primary items of concern in this area. Chemical and mineralogical compositions of the aquifer rocks probably explain variation among localities here.
Groundwater quality in the Tahoe and Martis Basins, California [ More info] Recent study encountered occasional high values of radioactive trace elements, but the water quality in this area as monitored compares favorably to more urban areas studied by the same group.
Groundwater quality in the Upper Santa Ana Watershed study unit, California [ More info] Recent study indicating nitrate and perchlorate are the primary inorganic constituents of interest here, coming from human activities such as agriculture.
Groundwater quality of southeastern Wyoming [ More info] Explains how we assess groundwater quality here, what characteristics are important, and how they hurt or, in some cases, help use use the water.
Gulf Coast Framework Studies Home Page [ More info] Provides geologic, geophysical, and geochemical framework studies that will aid in a reassessment of energy commodities (coal, gas, and oil) in the Gulf Coast Region.
Gulf of Mexico Integrated Science [ More info] Website of the Gulf of Mexico Integrated Science program to understand the framework and processes of the Gulf of Mexico using Tampa Bay as a pilot study. Links to publications, digital library, water chemistry maps, epiphytes, and field trips.
Household Chemicals and Drugs Found in Biosolids from Wastewater Treatment Plants [ More info] Research findings and examples of application to real problems--biosolids have high concentrations of household contaminants compared to treated liquid wastewater effluent.
Hudson River salt front data [ More info] Tide stage, specific conductance, water temperature, and freshwater inflow at selected Hudson River (New York) gages updated every 4-hours to measure the effects of freshwater withdrawals and upstream movement of the salt front.
Investigating atmospheric mercury with the U.S. Geological Survey mobile mercury laboratory [ More info] Explains sources of mercury in the air, ways in which mercury is concentrated in animals, and describes how we measure deposition of atmospheric mercury, with summaries of observations.
Isotope and Chemical Methods in Support of the U.S. Geological Survey Science Strategy, 2003-2008 [ More info] Types of geochemical and isotopic analyses used in conducting a variety of research studies in USGS, primarily focused on mineral deposit formation.
Alphabetical Index of Topics
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