A. Wing, ,ont Geology. ' -413 



back for two or three miles upon the slate. This arrangement 

 in the main prevails along the west front of Snake and Buck 

 Mountains to near Vergennes. 



"Along the highest part of Snake Mountai 

 stone is seen at all. At the north end of the mountain the Red 

 Sand-rock has been lifted until it is 700 feet above the level of 

 the Hudson Eiver slates to the west, while at the bo 

 four or five miles distant, it is much less elevated. Around its 

 northwest end, only the Hudson Eiver slate is seen. Then the 

 Chazy comes in behind the Trenton, and both are folded over 

 on the slate. The Chazv. Trent, n. and the Hudson Eiver slate 

 disappear in the same order farther south. The Eed S 

 (Potsdam) appears to have been pushed up and thrust w »->t over 

 these other formations; and so far over, opposite th( 

 part of the mountain, as to coneeal first th« < 'ha/o . the Trenton 

 and the Hudson Eiver beds ; then, farther north, leaving the 

 Hudson Eiver beds, Trenton and Chazy, along the lower parts 

 of the mountain." 



The Chazy beds on the west of the fault afford large Maehrax, 

 one or two 'species of Orthoceras, an Orthis ; the Black Eiver 

 limestone. • " des otber 



species; the Trenton. Trinuctoi* c utricus, and various 



other fossils, and the Hudson Eiver slate its characteristic 

 species. „. 



This fault continues south through Bridport, Eastern Shore- 

 ham and Orwell to Orwell village and beyond, "but with some 

 irregularity of direction, it following neither a meridian nor the 

 line of a belt or fold." . . .„ * 



"Two or three miles south, half a mile west of he .village .of 

 Shoreham, and south by Sisson's Hill and Barnum s Hill, in he 

 south of Shoreham, the Potsdam proper is folded over on to tne 

 Hudson Eiver slate." "Six m i h v 



valley of Orwell, at Ch.f , sll ~. in a deep gorge made by 

 the stream, the Chazv, holding \, ■ £*£* 



the Hudson Eiver slate, etc/' Mutton Hill adjoins the fault 

 Again in Waltham, eight or ten miles north of Bridport, the 

 Red Sand-rock is brought up against the Trenton. 



