Collecting pieces or specimens or making measurements or observations at determined intervals or areas. Results may be used as representative of the whole research area or population.
Part A of a complex report on the results of ROCK-EVAL and vitrinite reflectance analysis of a large sample base from more than 70 wells located in three oil-rich California petroleum basins in order to study the formation of oil deposits.
Part B of a complex report on the results of geochemical analysis of 75 shale samples from the Los Angeles, Ventura, and San Joaquin Basins to gather observations relevant to exploration regarding the formation of oil deposits in these basins.
A synthesis of the Mineral Resources Program's past and future research directions in the western U.S. on metal contamination due to mineral deposits and mining and the environmental effects on living organisms. Chapters 1, 4, and 6 as PDF files.
Homepage for the Pesticide National Synthesis Project, an assessment of pesticides in national water resources, with links to national reports, national statistics, national data, pesticide use, analytical strategy, and standards for the U.S.
Overview of aspects of research on pesticides and herbicides in Midwestern rivers with collection of data, results over a period of time, online publications, and bibliography.
Description and photos related to the Picher Mining District in Oklahoma, once a primary U.S. source of lead and zinc and now the largest superfund site in the U.S. with millions of cubic yards of mine tailings (locally known as "chat") remaining.
Report on the Sirenia Project use of a radio tracking study to determine manatee movement patterns and habitat to develop ecological models to understand and predict the effects of hydrologic restoration on manatees in Southwest Florida.
Paper from Forum on Wildlife Telemetry, Snowmass Village, CO, 1997, describes technique for implanting radio-transmitters for tracking amphibians such as frogs with telemetry.
Report on the use of regression equations from measurements made by water quality monitors and analytical results of manually collected samples estimating nutrient, bacteria, and other constituent concentrations to study streams in Kansas.
U.S. Department of the Interior |
U.S. Geological Survey