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Publication Extents

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The geology of the Lake Superior region
Charles Richard Van Hise, Charles Kenneth Leith
1911, Monograph 52
The Lake Superior region is a part of the southern margin of the great pre-Cambrian shield of northern North America.  It is bordered and overlapped on the south by Paleozoic rocks of the Mississippi Valley and on the southwest by Cretaceous deposits.  The pre-Cambrian rocks of the area, which may...