Bibliographic source: Geoindex lat-long search 



Author: Witkind, I.J. 



Title: Quaternary geology of the Smoke Creek - Medicine Lake - 

 Grenora area, Montana and North Dakota 



Series: USGS Bulletin 1073 



Date: 1959 



Geologic mapping at 1:62,500 shows the area to be underlain by 

 outwash deposits of late Wisconsin ("Mankato") age. The adjacent 

 margins of the Dagmar Channel are shown underlain by extensive kame 

 terrace deposits. Reconstruction of the late Wisconsin maximum ice 

 extent shows the southern margin just south of Medicine Lake. The 

 entire area is shown as an elongate southwestward oriented lobe, 

 with Big Muddy Creek north of Medicine Lake largely ice-free. 



Mikj.llop Creek Wetland 



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 geologic mapping at 1:125,000(7) scale shows Mikillop 

 Creek, including the sample site, underlain by undifferentiated 

 glacial deposits. The contributing drainage basin is shown to be 

 underlain the Wallace Formation on lower slopes and (probably) the 

 Striped Peak Formation, both of Proterozoic Y (Belt) age. The 

 Wallace Formation (Helena Formation equivalent) is dominantly 

 calcareous and dolomitic; the Striped Peak Formation (Missoula 

 Group) is composed mainly of argillitic and quartzitic lithologies. 



Two mapped normal faults are shown intersecting very near or 

 beneath the site. One is part of the dominant northwest trending 

 series, parallel to the Thompson Lakes Fault to the north, and is 

 shown extending up the (unnamed) south fork of Mikillop Creek and 

 on to Horseshoe Lake, eventually merging with the Thompson Lakes 

 Fault. The other trends east to northeast, crossing both forks of 

 Mikillop Creek. Fault control of topography and of Mikillop Creek 



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