182 



Report of the State Geologist. 



825' 



275' 

 250' 

 210' 



120' 



15' 



0' 



50' 

 25' 

 40' 



90' 

 105' 

 15' 



H 4 . Sherburne. 

 Covered. Hamilton. 



IF. Outlet of Turtle lake. 



Partly covered. 



H 2 . 



Glen. Hamilton. 

 H 1 . 



Covered. 



Garrattsville hotel level. 



The hill on the western side of Butternut creek below Garrattsville is 

 steep, but pretty well covered with drift, so that exposures of rocks are some- 

 what infrequent. About one and one-half miles below Garrattsville, Hamilton 

 shales show by the roadside, while in the field, 150 feet higher, are rather 

 thin arenaceous shales which run into sandstones and contain but few fossils, 

 apparently in the upper part of the Hamilton. Seventy-five feet higher, or 

 225 feet above the road, are thin sandstones apparently in the Sherburne for- 

 mation. Along the valley, three and one-quarter miles below Garrattsville and 

 a short distance above Stetson ville, are rocks belonging in the Hamilton 

 formation. On the road west, one hundred feet above the valley, are 

 smooth, arenaceous, thin sandstones of the Sherburne formation. This 

 agrees with the exposures of Sherburne found to the northwest in Pitts- 

 field township about Ketchum, where the valleys and lower hills are 

 composed of the Sherburne, with the Ithaca forming the summits of the 

 higher hills. 



The Hamilton probably follows the creek valley for a mile or more below 

 Stetsonville, before reaching its upper Limit. A dip of seventy feet per mile 

 to the south would just about bring down what was called the top of 



