1 62 



With these facts in mind it is reasonable to predict 

 the advance of other and longer glaciers in the Yakutat Bay 

 region as a result of avalanching during the 1899 earth- 

 quakes, for, just as the several Alsek glaciers, 55 to 75 

 miles (88 to 120 km.) east of Yakutat bay, and the Logan 

 glacier, 80 miles (128 km.) to the northwest, advanced in 

 1908, 1909, and 1912, respectively, so the other and longer 

 ice tongues of the St. Elias range will eventually feel this im- 

 pulse and push forward. In 1913 for instance, Seward 

 glacier may move forward. This glacier heads on the 

 divide with Logan glacier which advanced in 1912 after 

 at least 200 years of stagnation. A strong advance of 

 Seward glacier would break up the central, stagnant 

 portion of the Malaspina and change the dirty, moraine- 

 mantled slopes at Sitkagi bluffs into a clean, crevassed 

 ceberg-discha'-ging, tidal ice front. 



GRANBY BAY, OBSERVATORY INLET. 



BY 

 R. G. MCCONNELL. 



INTRODUCTION. 



The objective point of this excursion is a large iron 

 and copper sulphide deposit on Hidden creek near Granby 

 bay, Observatory inlet, recently acquired by the Granby 

 Consolidated Mining, Smelting and Power Company and 

 now being opened up by them. 



Observatory inlet is a deep fiord paralleling the lower 

 portions of Portland canal and connected with it by a 

 passage north of Pearce island. Its shore lines are more 

 irregular than usual, and near its head it divides into two 

 branches, the more easterly of which cuts through the 

 granitic belt of the Coast range and terminates in the dark 

 sedimentaries bordering it on the east. At the junction of 

 the two arms, the inlet expands and numerous rocky islands 

 project above the surface of the water. Granby bay is 

 situated west of the expanded portion. 



