"Consisting of steep-sided hills and valleys, the Mississippian age rocks that make up this spectacular and scenic region are mostly siltstone rich in silica." Norman Upland region here. #browncountyindianalegacy.igws.indiana.edu/Surficial/La...
"Consisting of steep-sided hills and valleys, the Mississippian age rocks that make up this spectacular and scenic region are mostly siltstone rich in silica." Norman Upland region here. #browncountyindianalegacy.igws.indiana.edu/Surficial/La...