Kanivetsky, RomanDistribution of major element chemistry in the Cedar Valley-Maquoketa-Dubuque-Galena aquifer; Franconia-Ironton-Galesville aquifer; St. Peter aquifer; Prairie du Chien-Jordan aquifer; Mt. Simon-Hinckley-Fond du Lac aquifer, scale 1:1,000,000.PDFengMinnesota Geological SurveyPublicMajor-constituent chemistry of selected Phanerozoic aquifers in Minnesota, M-61, Plate 2MapsMinnesota1986University of Minnesota