The geologic map for the Grissom quadrangle has been created as a general-purpose map that is applicable to land-related investigations in the earth, environmental and biological sciences. Includes one cross section, one geochemical table, three stereonets, one rose diagram and rock unit descriptions. By David E. Blake, Cindy M. Phillips, Benjamin D. Grosser, Kenneth R. Robitaille and Channa Witanachchi, 2016. Approximate scale - 1:24,000. Approximate size is 42"x38".