56 TARR AND MARTIN CHANGES OF LEVEL IN YAKUTAT REGION 



level are very irregular, but on the whole show uplift. A short distance 

 out from the mountain base the uplift ceases, and the same is true at the 

 head of Eussell fiord. In all cases, that is on four coasts (both sides of 

 Yakutat bay and Eussell fiord) (plate 23), there is a change from an 

 upraised to a depressed or stationary coast in a short distance — within 

 a hundred yards southeast of Knight island and on the southeast 

 shore of the head of Eussell fiord and within a mile on the other two 

 shores. 



The longest stretch of the foreland coast studied lies between Knight 

 island and Yakutat. Here, both on the shores of the foreland and in the 

 maze of channels between the islands, the usual condition is that of forest 

 coming down to the very water's edge, and therefore giving a very delicate 

 register of change of level. Along most of the coast there has evidently 

 been no change whatsoever; but in two or three places there has been a 

 very slight uplift, and in a number of places the coast has been depressed, 

 especially among the small islands. There is also evidence of older 

 change of level in two or three places, but notably on the northeast end of 

 Krutoi island, where there is a recent uplift of 3 feet, and back of it a 

 beach and wave-cut bluff of much older date with a mature forest growing 

 on it. This older uplift was between 5 and 10 feet. 



At and near Yakutat and in the slough near Ocean cape, there is no 

 evidence of change of level. Whether the destroyed cemetery on Khan- 

 taak island is evidence of depression or merely the work of the earthquake 

 wave was not determined ; but just west of this, on the ocean shore of the 

 island, there is a condition of forest encroached on by present waves which 

 suggests depression of about seven feet. It may, however, represent sea 

 encroachment on the shore, and is therefore considered only tentatively 

 as possible evidence of local depression. 



CHANGES OF LEVEL ALONG THE MOUNTAINOUS EAST COAST OF 



YAKUTAT BAY 



The changes of level along this coast are very irregular. Near Knight 

 island the uplift varies from 5 to 12 feet 6 inches, and there are marked 

 variations in short distances. Along the coast north of Knight island to 

 within 4 or 5 miles of point Latouche the average condition is either that 

 of no change of level or else of depression (see plate 23 and figure 2) ; but 

 where the coast turns eastward, both near Knight island and near point 

 Latouche, uplifted shores begin abruptly, reaching a maximum of 10 feet 

 near Knight island on the mainland, and of 12 feet 6 inches near point 

 Latouche. 



