Scientists update geological map of northern Wisconsin, Michigan’s Upper Peninsula 

By Kyrmyzy Turebayeva

The U.S. Geological Survey has began large-scale low-level airplane flights over Michigan’s Upper Peninsula and northern Wisconsin to obtain high-resolution data on subsurface mineral structures and bedrock composition. The data will be used to create two- and three-dimensional maps to better understand the geological structure at depths of about 10,000 feet.