de Beer, Jan Albert2020-04-212020-04-211997-10https://hdl.handle.net/11299/212440A Thesis submitted to the faculty of the Graduate School of the University of Minnesota by Jan Albert de Beer in partial fulfillment of the requirements for the degree of Master of Science, October 1997.This thesis represents the results of a geologic investigation of a field area located near Mine Centre, in Northwestern Ontario, Canada. Investigation of the field area was conducted to further the understanding of the relationships between volcanic stratigraphy, hydrothermal alteration, metamorphism, and occurrence of base metal mineralization.enPlan As (thesis-based master's degrees)Department of Earth and Environmental SciencesUniversity of Minnesota DuluthMaster of ScienceMaster of Science in GeologyThesis or Dissertation