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: Methods
Help
Laboratory methods
Experimental techniques to analyze and test samples in a place equipped and designed for the work.
Subtopics:
Chemical analysis (60 items)
Core analysis (9 items)
Culturing (specimens) (1 items)
Faunal and floral census (microscopic) (3 items)
Grain-size analysis (3 items)
Isotopic analysis (23 items)
Meristics (1 items)
Microscopy (5 items)
Paleomagnetic analysis (3 items)
Plant and animal testing (5 items)
Therapeutic methods (2 items)
Tree ring analysis (1 items)
Camera calibration (1 items)
Age estimation methods (6 items)
Results 101 - 110 of 112 listed alphabetically [list by similarity]
PDF The effects of Glen Canyon Dam operations on early life stages of rainbow trout in the Colorado River [More info]
Complex interactions among hydrologic events initiated by people and the behaviors and characteristics of animal species (both native and introduced) lead to important scientific and management problems.
PDF Trace metals related to historical iron smelting at Hopewell Furnace National Historic Site, Berks and Chester Counties, Pennsylvania [More info]
Iron ore containing elevated concentrations of trace metals was smelted here during 113 years of operation (1771-1883). We sampled a variety of materials nearby to determine the amount of metals such as arsenic, chromium, copper, lead, and zinc.
Tree rings record of 100 years of hydrologic change within a wetland [More info]
Use of tree ring dating to study distinct episodes of hydrologic change in the Tully Valley wetland, New York recording history of solution-brine injection mining for salt.
USGS East-coast sediment analysis: analysis, procedures, database and georeferenced displays [More info]
Grain-size analysis of marine sediments of the U.S. eastern coast with sampling and lab methods, surficial sediment database in three formats (Excel, Dbase IV, ASCII), and use of geographic mapping tools for visualizing sediment data layers.
USGS Luminescence Dating Laboratory [More info]
The USGS Luminescence Dating Laboratory in the Denver Federal Center, Colorado, is a facility for determining the age of sedimentary and volcanic ash deposits using luminescence dating with information on sample collection and laboratory methods.
USGS Reference Materials Program: Serving the needs of the global analytical community [More info]
Synopsis of the research and services provided by USGS in support of reference materials used for calibration in laboratory analytical studies.
Understanding our planet through chemistry [More info]
Site with a series of articles showing how chemists and geologists use analytical chemistry to determine the age of the Earth, determine Earth's history, predict volcanic eruptions, observe long-term atmospheric change and study pollution.
PDF Understanding processes affecting mineral deposits in humid environments [More info]
Contaminants from mines move more easily from ore materials and mine waste piles to surrounding estuaries and living organisms when water moves through the mine site. Geochemical results shown here will help people mitigate the negative effects.
PDF Using genetic research to inform imperiled and invasive species management [More info]
Describes investigative techniques focused on genetic characteristics of individuals and populations, and explains how this information helps improve existing natural populations and potentially impede invasive populations.
Wastewater Indicators Shown to Degrade in Streams [More info]
Research findings and examples of application to real problems--the stability of contaminants that indicate human wastewater needs to be considered.
Result pages:FirstPrevious ... 5 6 7 8 9 10 11 12 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=619&b=100&n=10&order=alpha
Page Contact Information: Ask USGS