1585-A 

 Date: 1983 



Geologic mapping at 1:50,000 scale shows the site underlain by 

 glacial till, described as generally bouldery in character, 

 covering bedrock units throughout the Odell Lake-Lacy Creek-Skull 

 Creek Meadows area. Bedrock outcrops underlying the contributing 

 basin are shown as Missoula Group formations (undifferentiated) of 

 Proterozoic Y (Belt) age. Farther west large areas of various 

 Cretaceous and Tertiary aged igneous rocks, mostly with granitic 

 or granodioritic compositions, are shown. There are a few small 

 scattered areas of Helena Formation (dominantly carbonate 

 lithologies) of Proterozoic Y (Belt) age. 



Mineral resource potential was evaluated for this study through 

 stream sediment sampling for molybdenum, copper, lead, zinc and 

 silver. The wetland site is just outside of a broad northwest- 

 trending zone of identified potential for silver and gold 

 mineralization containing several areas of identified molybdenum 

 potential . 



No direct structural information and no hydrologic information are 

 provided. 



Oilmont Wetland 



Bibliographic source: Referenced L.K. Tuck (see Fumell references) 

 Author: Collier, A.J. 



Title: The Kevin-Sunburst oil field and other possibilities of oil 

 and gas in the Sweetgrass Arch, Montana 



Series: U.S. Geological Survey Bulletin 812-B 



Date: 1929 



This document describes the structure and economic geology of the 

 Kevin-Sunburst area as it was understood at the time. Structural 

 contouring of the Madison Group shows the wetland site to be near 

 the apex of the Kevin-Sunburst Dome. The publication does not 

 include a geologic map per se but indicates the site is underlain 

 by the Colorado Shale of Late Cretaceous age, possibly the 

 Blackleaf Member. 



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