1. Structure map of Archean rocks, Palmer and Sands 7 1/2-minute quadrangles, Michigan, showing Great Lakes tectonic zone Yale Public content 1993. 2002-06-01T04:00:00Z. 2020-10-16T18:50:53Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Michigan and Great Lakes Region (North America). Archaean.