Investigating the Geological Evidence Following the 
1983 Borah Peak Earthquake Along the Lost River Range Fault

 

Sat. View.jpg (404748 bytes)    
False-color infrared satellite image

 

Challis Hot Springs.jpg (30841 bytes) 
Challis Hot Springs Campground and
swimming facilities

 

Kurt&Roy.jpg (320132 bytes) 
Facilitators leading the discussion

 

Kurt&Roy2.jpg (251913 bytes) 
Explanation of the finer points

 

Roadside Reader 2.jpg (143631 bytes)
Earthquakes in Idaho??

 

Roadside Reader.jpg (143313 bytes)
Senator William E. Borah 1907 - 1940

 

Borah Peak Summit.jpg (44656 bytes) 
Borah Peak

    

Sand Blows.jpg (343220 bytes) 
Sand "boils" near Chilly Buttes

 

Challis Sunset.jpg (17889 bytes) 
Challis sunset

 

Anno.Block2.jpg (300286 bytes)     
Fault scarp transecting bedrock at Rock Creek 

 

Block scarp 2.jpg (303122 bytes) 
Closer view of fault scarp

 

Bottom of Graben.jpg (57114 bytes) 
Standing at bottom of graben

 

Offset.jpg (101108 bytes) 
Three meters of offset along scarp 

 

Stairstep.jpg (146622 bytes) 
Stair-step along the scarp

 

Aquaduct.jpg (306387 bytes) 
Evidence of left-lateral movement

 

horst & graben 2.jpg (300928 bytes) 
View southeast of horst and graben

 

Measurable Offset.jpg (170244 bytes)     
Fault scarp north of Thousand Springs Road

 

Trench Analysis.jpg (392557 bytes) 
Investigation conducted in trench geology

Earthquake Resources
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