North Dakota Geological Survey


Killdeer Elgin Glen Ullin Mott Dickinson Bowman Grassy Butte Belfield

RI-112  The Alumina Content of the Bear Den Member (Golden Valley Formation) and the Rhame Bed (Slope Formation) in Western North Dakota by Murphy, E. C., 2013. Available on CD for $5.00.

GI-158  Alumina Content of the Bear Den Member & the Rhame Bed in ND. Murphy, Edward, 2012.   Available in traditional paper map format ($10.00), or on CD with pdf ($5) or with shape files for ($25.00).   Shape files require GIS or other mapping related software to open.

Clay Location Sites: Clay Analysis Excel Files: Clay Sample Locations Excel Files:
#17 #17 & 20 #17 - 22
#18 #18  
#19 #19  
#20 #17 & 20