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  2. United States Geological Survey - Wikipedia

    en.wikipedia.org/.../United_States_Geological_Survey

    www.usgs.gov. The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the ...

  3. Geological survey - Wikipedia

    en.wikipedia.org/wiki/Geological_survey

    A geological survey is the systematic investigation of the geology beneath a given piece of ground for the purpose of creating a geological map or model.Geological surveying employs techniques from the traditional walk-over survey, studying outcrops and landforms, to intrusive methods, such as hand augering and machine-driven boreholes, to the use of geophysical techniques and remote sensing ...

  4. Geophysical survey - Wikipedia

    en.wikipedia.org/wiki/Geophysical_survey

    Geophysical survey is the systematic collection of geophysical data for spatial studies. Detection and analysis of the geophysical signals forms the core of Geophysical signal processing. The magnetic and gravitational fields emanating from the Earth's interior hold essential information concerning seismic activities and the internal structure.

  5. Hayden Geological Survey of 1871 - Wikipedia

    en.wikipedia.org/wiki/Hayden_Geological_Survey...

    Hayden Geological Survey of 1871. 1871 Hayden Survey at Mirror Lake en route to East Fork of the Yellowstone River, August 24, 1871-W.H. Jackson photo. The Hayden Geological Survey of 1871 explored the region of northwestern Wyoming that later became Yellowstone National Park in 1872. It was led by geologist Ferdinand Vandeveer Hayden.

  6. Center for Earth Resources Observation and Science - Wikipedia

    en.wikipedia.org/wiki/Center_for_Earth_Resources...

    Coordinates: 43.735926°N 96.625324°W. The Center for Earth Resources Observation and Science (EROS) is a United States Geological Survey data management, systems development, and research field center. It serves as the national archive of remotely sensed images of the Earth's land surface acquired by civilian satellites and aircraft.

  7. Digital geologic mapping - Wikipedia

    en.wikipedia.org/wiki/Digital_geologic_mapping

    Digital geologic mapping is the process by which geological features are observed, analyzed, and recorded in the field and displayed in real-time on a computer or personal digital assistant (PDA). The primary function of this emerging technology is to produce spatially referenced geologic maps that can be utilized and updated while conducting ...