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Kaolinitic Weathering Zone On Precambrian Basement Rocks, Red River Valley, Eastern North Dakota And Northwestern Minnesota, Lynne Irvine Kelley
Kaolinitic Weathering Zone On Precambrian Basement Rocks, Red River Valley, Eastern North Dakota And Northwestern Minnesota, Lynne Irvine Kelley
Theses and Dissertations
A suite of 26 drill cores recovered from the Red River Valley Drilling Project has provided new information on the Precambrian basement of eastern North Dakota and northwestern Minnesota. Basement rocks in this area consist of intermediate to felsic coarse-grained massive or gneissic rocks, and intermediate to mafic metavolcanic and metasedimentary schists. The Precambrian rocks of the region are interpreted to be a buried extension of the Superior Province of the Canadian Shield, and are divided into terranes of granitic rock and mafic schist, on the basis of drill-hole samples, patterns seen in Superior Province rocks which crop out to …