GEOLOGIC MAP OF THE BELT 30’ x 60’ QUADRANGLE, CENTRAL MONTANA Susan M. Vuke, Richard B. Berg, Roger B. Colton, and Hugh E. O’Brien Montana Bureau of Mines and Geology Open-File Report MBMG 450 2002 REVISIONS Text: 10/03 Map: 11/07 This report has had preliminary reviews for conformity with Montana Bureau of Mines and Geology’s technical and editorial standards. Partial support has been provided by the STATEMAP component of the National Cooperative Geologic Mapping Program of the U.S. Geological Survey under contract number 01-HQ-A6-0096.