Crustal Imaging and Characterization Team

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Geophysics of Rio Grande Basins

Using geophysics to understand subsurface aspects of the 3D hydrogeologic framework of Rio Grande basins - contributions to the project "Geologic Framework of Rio Grande Basins"

Understanding the subsurface is critical to develop a 3D geologic framework of Rio Grande basins, yet drill-hole information is typically too sparse and/or too shallow to gain enough information about the properties of subsurface materials and the structure of the basins. Therefore geophysical methods are the primary tools for developing this understanding.

Current study areas are focusing on Subsurface Models and Intrabasinal Faults.

Subsurface Models: A variety of geophysical methods are used to develop subsurface understanding of specific basins.

Intrabasinal Faults: Developing ways to identify and predict important hydrogeologic properties related to intrabasinal faults inthe subsurface.

Principal Investigators

Aeromagnetic and gravity methods

• Tien Grauch - task leader
• Viki Bankey - gravity and magnetic modeling
• Jeff Phillips - depth estimation

Electrical geophysics

• Brian Rodriguez - magnetotelluric methods
• Jackie Williams - magnetotelluric methods
• Maryla Deszcz-Pan - airborne time-domain, electromagnetic methods

Fault studies

• Jonathan Caine - structure and hydrogeology
• Mark Hudson - structure and magnetic properties
• Scott Minor - structure and hydrogeology
• Tien Grauch - aeromagnetic expression
• Jared Abraham - magnetic susceptibility borehole tool

For further information about this study contact: Tien Grauch

Additional information on geophysics at the USGS.

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