Grant, Ulysses2010-01-082010-01-081900https://hdl.handle.net/11299/56324Contains 6 plates and 55 figures. *NOTE: Taconic is an archaic term that is no longer applied to Minnesota rocks.Summary of the geological and natural history studies carried out in Minnesota between 1872 and 1901. Published in 6 volumes. Vol 5 is a summary of structural and petrographic studies in Minnesota between 1898 to 1900, of the Taconic* and Archean time periods.engeologypetrographystructural geologyMinnesota Geological SurveyMap