Contributions to the geology of the Mesabi range, with special reference to the magnetites of the iron-bearing formation west of Mesaba, Bulletin 19, Plate 2
Contributions to the geology of the Mesabi range, with special reference to the magnetites of the iron-bearing formation west of Mesaba, Bulletin 19, Plate 2
Description
Longitudinal Section through the Biwabik and Gunflint Formations, scale 1 inch = 1.5 miles.
Gruner, John W. (John Walter), 1890- (1924). Contributions to the geology of the Mesabi range, with special reference to the magnetites of the iron-bearing formation west of Mesaba, Bulletin 19, Plate 2. Minnesota Geological Survey. https://reflections.mndigital.org/catalog/mgs:1014 (map)