532 CARBONIFEROUS ROCKS IN CUMB. CO. — LOGAN ^ FLETCHER. 



Ft In. 



wedges. Some of the pebbles are three inches in 

 diameter; they consist chiefly of various gray 

 Devonian rocks, but among them there are finer 

 soft micaceous bluish-gray sandstone and shales, 

 apparently derived from Carboniferous strata. 

 Twenty feet to high water-level at the blilff about 

 half a mile from Birch Cove Brook ; and thirty-five 

 feet to the bottom of the same clilf, but all out out 

 behind back to the band of red shale. Several fine 

 prostrate treeis occur, and on the strike some of 

 these rocks turn again Indian or brick-red, 

 altliough for the most part they are gray and rusty 12 



The oVerlying band thins out, but again takes 

 up in an attenuated form in a few places, the rocks 

 following the coast for a great distance on the 

 strike. The line of the red band (10 to 12) is 

 occupied by a definite bedding- joint, into which 

 lenticular small patches of argillaceous shale some- 

 times come, while above it about twenty feet and in 

 other parts of the high cliff, there are thin layers 

 of argillaceous shale. 



Nearer McCarren Cove, the finer bands have a 

 tinge of reddish or broAvn, and are nearly all 

 pbbbly. Further along, parts of the fine beds 

 become fit for grindstone, the red bands in the cliff 

 retaining their horizontal position, so that there is 

 absolutely no doubt tliat this part of the section is 

 on the strike. Dip not far from the cove, S. 23° E. 

 <15°, S. 7° E. < 4° to 18°. The section here 

 below Xo. 9 is as follows : 



1. Greenish-gray sandstone and argilla- 



ceous shale 2 9 



2. Greenish-gray argillaceous shale with 



two layers of clay 1 6 



