Second phase of USGS airborne survey of Decorah is well underway

Photo courtesy of Bob Modersohn at www.bobmodersohn.com

The second phase has begun of the U.S. Geological Survey's airborne analysis of the geology of the Decorah area. 

In January a specially-fitted DC-3 conducted low-flying paths over the Decorah area.  This week a specially-fitted helicopter with large electromagnetic and magnetic instruments carried from a cable has been flying overhead.

USGS scientists plan to use the new geophysical data to help determine if there is a potential for nickel, copper and platinum deposits to exist in this area.  The data being collected will help the scientists to study the deep rock deposits that are located beneath the limestone and sandstone layers in the area.