INDEX 



169 



neighboring shales and sand- 

 stones, S^-BQ*; exposures, 25 8 -34 9 ; 

 night, 23 3 -24 4 ; local examples of 

 metamorphism, 36 4 -37 s ; other ef- 

 fects than metamorphism, 37 8 -38 4 ; 

 relation to the sandstones, 24 4 -25 8 ; 

 local details of structural rela- 

 tions, 25 8 -32 1 ; thickness, 38 5 -39 3 ; 

 width, 22 8 -23 2 . See also Diabase. 



Trenton limestone, exposures in 

 Wells, 148 6 -50 T . 



Trough Hollow, trap rock, 30 2 . 



Union hill trap, 42 2 . 

 Utica slate, exposures in Wells, 

 150 8 -52 6 . 



Valley Cottage, trap rock, 33\ 

 Van Horn, F. R., cited, 113 2 . 

 Vanuxem, Lardner, cited, 146\ 



Verdrietege Hook, sandstone expo- 

 sures, IT 4 ; trap rock, 26 9 -27 T ; illus. 

 facing p. 22. 



Walcott, C. D., cited, 53 8 , 162 T . 



Warren county, geology, 5 6 , 137-62. 



Washington county, geology, 5 6 , 

 137-62. 



Waterlime beds, investigations on, 

 6 1 ; exposures, 54 1 , 57 4 , 64 4 , 67 8 , 68 T . 



Wells, geology, 143 s -52 9 ; topogra- 

 phy, 143 4 ; geoilogic map, facing p. 

 141, 144. 



West Mountain, 63 9 . 



Whiteface type of anorthosite, 103'- 

 5 a . 



Whitehall type of gneisses, 159% 

 162\ 



Zircon, 103 8 , 107 8 , 150 B , 155*. 



