Cambrian Stratigraphy in Western Wisconsin Notes accompanying a 1966 conference field trip covering geology between Chippewa Falls and Trempealeau and between Elroy and Portage. Routes shown. Bedrock Geology Data and Resources IC07 Cambrian Stratigraphy in Western Wisconsin Ostrom, M.E.; 1966 Report: 79 p. Download Related Collections Information Circular View Information Circular