Iron formations along the Mesabi Range (Figure 1) in Minnesota are studied for various economic
reasons, but for the purpose of this project, we focus on the physical properties of the individual grains in
order to decipher information linked to the depositional environment. One missing component to our current
understanding of iron formation deposition is the depth of the water, and energy it took to move the
sediments that make up the iron formations. The purpose of this research project is to examine iron
formation thin sections, and quantify the basic shape and size parameters of the granular material in order
to infer depositional conditions within the Biwabik Iron Formation on the Mesabi Range in Minnesota.
University of Minnesota's Undergraduate Research Opportunities Program
Johnson, Kendall A.
Quantifying physical characteristics of granular cherty material to determine transport history and depositional setting of iron formation from the ~1.9 Ga Mesabi Iron Range, MN.
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