ALASKA GEOLOGY 



strike being NE. The 

 principal cleavage strikes 

 somewhat east of north, 

 and has a variable incli- 

 nation, dipping 60 to the 

 west in the harder, more 

 arenaceous beds, and be- 

 ing nearly vertical in the 

 more argillaceous. 



Southwest of the wharf 

 at Kadiak village the black 

 slates strike N 5 E and 

 dip 80 W to vertical. 

 Twenty rods beyond the 

 houses Terebellina is 

 abundant. Farther south- 

 east the slates alternate 

 with beds of sandstone a 

 foot thick, and strike N 

 50 E, dipping 30 W. 

 The cleavage is N 55 

 W, dipping 45 SW. Be- 

 yond are grey fine-grained 

 sandstones, with included 

 slate pebbles, and oval 

 depressions one - fourth 

 inch long from which 

 concretions have been 

 dissolved. The strike is 

 N 15 W, changing to 

 N 25 W; dip 70 W, 

 changing to 90. 



Dr. Dall says: 1 " the 



1 Report on Coal and Lignite of 

 Alaska ; lyth Ann. Rep. U. S. Geol. 

 Survey, Ft. i, p. 872. 1896. 



