CHICHAGOF COVE 



75 



distinctly bedded sediments. The coarser agglomerates 

 contain angular fragments, a foot or less in diameter, of 

 white or greenish porphyry and, rarely, granite. These 

 are cemented sometimes by comminuted material of 





Alluvium 



Stepovah .^Series 



U>w<j.- Beds* 



Approximtts Seal* of Miles 



? . 7 i T 1 



FIG. 17. GEOLOGICAL SKETCH MAP OF THE VICINITY OF CHICHAGOF COVE, 



ALASKA PENINSULA. 



By Charles Palache. 



the same nature, sometimes by a dark greenish black 

 compact material which is found, under the microscope, 

 to consist essentially of interwoven hornblende needles. 

 The finer-grained tuffs have a most varied appearance. 

 One specimen is a mass of small angular fragments of 



