FY2003 Integrated Borehole Geophysical Logging for Site Characterization at the Naval Air Warfare Center, New Jersey

As part of its applied research initiatives in FY2003, the USGS Office of Ground Water, Branch of Geophysics (OGW BG) conducted field experiments at the USGS Toxics Substances Hydrology Program's Naval Air Warfare Center (NAWC) research site in New Jersey. This is an ongoing project in collaboration with other Toxics Program scientists, building on research conducted during FY2002.

Research and training are currently focused on the acquisition of a comprehensive suite of standard and advanced borehole geophysical logs. The geophysical data will be entered into a database that will be accessible by USGS personnel involved in research at the NAWC site in order to support an integrated, interdisciplinary approach to site characterization efforts.

During FY2003, the Branch of Geophysics conducted natural gamma and spectral gamma logging of boreholes at the NAWC site. These surveys are part of a multi-method suite of geophysical surveys being conducted to support litho-typing of the gamma signatures used to develop the stratigraphic framework of the site. The information from these tools may be able to be used to identify and correlate unique lithologic signatures across fault boundaries and to correlate the geologic framework of the NAWC site to larger, basin-scale investigations.

This research was funded by the USGS Toxic Substances Hydrology Program, with support from the U.S. Army.

This research was conducted by Carole D. Johnson (USGS OGW BG) and John H. Williams (USGS OGW BG) with assistance from OGW BG staff.

For related information, see:

• Summary of FY2002 OGW BG research at the NAWC site
• USGS Toxics Substances Hydrology Program's NAWC Research Site web site
• NAWC Toxics Site Home Page