White, David A. (David Archer)Sheet 2 of 4 sheets, Stratigraphy (vertical and time sequence of geologic units) of Biwabik Formation, Mesabi Range, Minnesota, scale 1 inch = 11.2 miles.PDFengMinnesota Geological SurveyPublicStratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 2MapsMinnesota1954University of Minnesota