GIBSON. G 5 . 131 



3. Sandstone, gray, 20' 



4. Concealed, 30' 



5. Sandstone, greenish gray, 20' 



6. Concealed, 200' 



7. Sandstone, gray, massive, (base 1300' A. T.,) 25' 



8. Concealed to level of creek, 100' 



No. 1 comes near the horizon of the Montrose group since 

 if No. 7 be the JVew Milford upper (as seems probable) 

 No. 1 would then lie about 700' above the base of the Cats- 

 Mil sandstone series. 



Much calcareous conglomerate or fish-bone rock, is seen 

 along the outcrop of No. 1, but the stratum is much thinner 

 than the Clierry Ridge Limestone ; and besides, comes at 

 least 200' below that horizon. 



At the village of Smiley P. O. the sandstone seen near 

 Gibson at 1300' occurs in a line of cliffs on either side of the 

 valley 140' above the same and 1220' A. T. ; it dips rapidly 

 southward and no exposures occur below it. 



In ascending the road from Smiley toward Herrick Center 

 we come to the base of a massive sandstone at 1645' A. T. 

 and above this a flagstone quarry extends to 1695'. Then 

 some shale comes in. At 1725' a massive gray sandstone 

 with calcareous layer at base is seen in cliffs around the 

 hills. Putting these rocks in a section and beginning on 

 the summit of the ridge above, near the eastern line of the 

 township, we would get the following succession : (Fig. 35.) 



Smiley section. 



1. Cherry Ridge Conglomerate, 25' 



2. Concealed, 40' 



3. Cherry Ridge sand and limestone, 20' 



4. Concealed with occasional sandstones, 200' 



5. Sandstone, massive, grayish white, 25' 



6. Shales, 30' 



7. Sandstone, massive and flaggy, 50' 



8. Concealed, 300' 



9. Sandstone, massive, gray, 25' 



10. Concealed to level of Tunkhannock, 140' 



Nos. 1 and 3 are seen on the summit of the ridge at the 

 eastern edge of the township, where they form a double line 

 of cliffs around the hills, blackened by the weathering of 

 the great masses of calcareous conglomerate found at the 



