38 



Juneau-Yakutat Section page 



by Lawrence Martin 12 1 



Introduction 121 



Annotated guide 122 



Geology and Physiography of Glacier bay. ... 122 



Rock formations 122 



Topography 122 



Present-day glaciers 124 



Historical statement of studies of Muir 



glacier 126 



Glacier history similar to that of Yakutat 



bay 128 



Earthquake relationships 130 



Annotated guide (continued) 132 



Geology and physiography of Yakutat bay. ... 134 



General physiography 134 



General geology 135 



The 1889 earthquake 137 



Present-day glaciers 139 



Ancient expansion of Yakutat Bay glaciers 144 



Second expansion of glaciers 146 



Modern recession of glaciers 150 



Recent advances of nine glaciers 150 



Granby bay, Observatory inlet 



by R. G. McConnell 162 



Introduction 162 



Geology 164 



Mineralization 165 



Extent and origin of the ore bodies 167 



Bibliography 169 



