Geology, Geophysics, and Geochemistry Science Center

Geophysics and Remote Sensing

The Branch of Geophysics and Spectroscopy employs both field and airborne data acquisition to conduct their science. The Branch acquires and analyzes potential field data (magnetic and gravity) to permit construction of a 3D geologic framework of the crust of the earth.  They likewise acquire and interpret electrical and electromagnetic data that permit the development of 3D models of material property variation used in geological and hydrostratigraphic models.  Petrophysical measurement of hand or outcrop samples provide a link between available materials and remote measurements. Hyperspectral data is acquired and interpreted to understand surface materials, including mineralogy, oil, and vegetation, for applications to mineral resource potential, wildfires, and environmental and human health studies. Spectra of minerals and other materials are added to the USGS Spectral Library.

Active Projects (in addition to below)

Interdisciplinary Methods and Applications in GEophysics (IMAGE)

Filter Total Items: 28
Date published: September 30, 2015
Status: Completed

Alaska Geophysical Survey Interpretation

Available geophysical data for Alaska have not been fully exploited. Project objectives were to conduct systematic analysis of existing gravity, aeromagnetic and airborne electromagnetic data to map geologic trends, structural geologic and tectonic patterns, and identify key lithologies for direct integration with geologic framework and mineral potential studies.

Contacts: Bruce D Smith, Richard Saltus
Date published: September 30, 2015
Status: Completed

Airborne Geophysics for Rare Earth Element Deposits (AGREED)

The USGS Airborne Geophysics for Rare Earth Element Deposits (AGREED) project coordinated with industry to use high resolution airborne geophysical data collected over some of the advanced rare earth element (REE) projects in the U.S. These data were analyzed, interpreted and modeled to generate an improved understanding of the geologic setting, framework, and ore genesis for REE deposits. In...

Date published: September 28, 2012
Status: Completed

Integrated Methods Development Project

The Integrated Methods Development Project (IMDP) was an interdisciplinary project to develop tools and conduct research requiring integration of geologic, geophysical, geochemical, and remote-sensing expertise.

Date published: August 30, 2002
Status: Completed

Environmental Studies of the World Trade Center Area After the September 11, 2001 Attack

USGS scientists conducted a remote sensing and mineralogical characterization study of lower Manhattan around the WTC after the September 11, 2001 attack.