Dudley Slough 



Bibliographic source: Geoindex lat-long search 



Author: Coffin, D.L. , A. Brietkrietz and R.G.McMurtrey 



Title: Surficial geology and water resources of the Tobacco and 

 upper Stillwater river valleys, northwestern Montana 



Series: Montana Bureau of Mines and Geology Bulletin 81 



Date: 1971 



Regional map coverage at 1:84,500 scale shows the Dudley Slough 

 site to be underlain by undifferentiated Belt raetasediments , and 

 outside the lowland areas of major glacial deposition. 



Bibliographic source: Geoindex lat-long search 



Author: Johns, W.M. 



Title: Geology and mineral deposits of Lincoln and Flathead 

 counties, Montana 



Series: Montana Bureau of Mines and Geology Bulletin 79 



Date: 1970 



Regional mapping at 1:125,000 shows the general area of Dudley 

 Slough crossed by the contact between the Siyeh Formation and the 

 "Lower Piegan Unit". The Siyeh is described as dolomite and 

 limestone, commonly pyritic. The Lower Piegan is dominantly 

 argillite, often calcareous and sometimes with limestone lenses. 



Bibliographic source: None - DHES collection 

 Author: Rabe, F.W., R.L. Bursik and E.B. Cantor 



Title: Classification and monitoring of wetlands in established 



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