at this scale. 



Band y Res ervoir 



Bibliographic source: None - personal collection 



Author: Dea, Peter 



Title: Glacial geology of the Ovando Valley, Powell County, 

 Montana 



Series: University of Montana M.S. thesis in geology 



Date: 1981 



Detailed surficial geologic mapping at approximately 1:40,000 scale 

 shows the Bandy Reservoir site underlain by glacial till deposited 

 by the late Pleistocene Monture Creek advance. Description of the 

 Monture till lithology indicates that matrix grain size is variable 

 from sand to clay, and that limestone constitutes a significant 

 minority of the larger clast sizes. Clast lithologies described 

 (including limestone) reflect Proterozoic (Belt) formations exposed 

 in the Monture Creek drainage. 



Monture glacial deposits are interpreted as post-dating and 

 truncating deposits of the Clearwater advance, originating from the 

 Clearwater drainage to the northwest. Bandy Reservoir is near the 

 western margin of mapped Monture Creek deposits, and may overlie 

 Clearwater deposits (including possibly outwash) at depth. No 

 stratigraphic information for this area is provided. 



Bibliographic source: Geoindex lat-long search. 



Author: Mudge, M.R. , R.L. Earhart, J.W.Whipple and J.E.Harrison 



Title: Geologic and structure map of the Choteau 1 degree X 2 

 degree quadrangle. 



Series: U.S. geological Survey Miscellaneous Investigations Series 

 Map 1-1300 



Date: 1982 



