Date of Award
1973
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Geology
First Advisor
L. Clayton
Abstract
Pleistocene lithostratigraphic units containing glacial sediments in the Red Lake Falls, Minnesota, area and adjacent areas were studied to determine their heavy-mineral assemolages. Seventy-two samples of fine sand were studied by optical grain-count methods and 77 samples of fine sand were studied by x-ray diffraction methods. Most formations contain a hornblende-garnet-pyroxene-epidote assemblage; the Gervais Formation contains a pyroxene-hornblende assemblage. The mean proportion of the constituent minerals is different in each formation; however, there is overlap in the ranges of heavy mineral proportions among the formations. The Red Lake Falls Formation can be subdivided on the basis of garnet abundance.
Recommended Citation
Hobbs, Howard, "Heavy minerals of glacial sediments in the area of Red Lake Falls, Minnesota" (1973). Theses and Dissertations. 138.
https://commons.und.edu/theses/138