r CONTINENTAL 

 CRUST 



■\7y7rrr/77r rrrrr^/-/f-yrrr^r/,^r//Z 





KENAi MOUNTAINS Montague Island 



MANNING BAY FAULT ' PATTON BAY FAULT 



CONTINENTAL 



—-^^^^^ — 



^-20 I 

 '.OCEANIC CRUST/-30 5 

 //AND MANTLE//- 10 - 



-POST-QUAKE LAND SURFACE 



PRE-OUAKE LAND SURFACE- 



6 « 



- 2 ■;; 



t:i 



ALEUTIAN RANGE I Shf llko/ 

 I Sirail 



KOOIAK ISLAND 



CONTINENTAL 



CRUST • 



i. 



/^OCEANIC CRUST/^30 

 ///,k\<X> MANTLE 



100 



I 



300 Ki lometers 



Figure lU Schematic Cross Sections Across the Aleutian Arc Showing 



Approximate (solid) and Inferred (dashed) Land-Level Changes, 

 Aftershock Distrihution, and Geologic Interpretations. Heavy 

 Dots are Aftershock Hypocenters vithin 30 km of Section Lines 

 (Section Locations Shown in Figure 8) (from Plafker, 1965)- 



19 



