Heavy minerals of glacial sediments in the area of Red Lake Falls, Minnesota

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.

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Geology

Year

1973

Author dc:creator

• Hobbs, Howard

Contributors dc:contributor

• L. Clayton

• Geology
• Stratigraphic--Pleistocene; Heavy minerals--Minnesota--Red Lake Falls

Repository record dc:identifier

https://commons.und.edu/theses/138

OAI identifier oai:identifier

oai:commons.und.edu:theses-1137