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Photo of a large crack of tan, sandy-looking ground viewed from a window
Hector Mine Surface Rupture
Hector Mine Surface Rupture
Hector Mine Surface Rupture

Hector Mine surface rupture after 1999 earthquake in southern California. 

Hector Mine surface rupture after 1999 earthquake in southern California. 

Image: Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture

Looking towards NW across Lavic Lake, rupture passing from lower right, stepping out toward upper left; NW end of the surface rupture is in the distance on the far side of Lavic Lake.

Looking towards NW across Lavic Lake, rupture passing from lower right, stepping out toward upper left; NW end of the surface rupture is in the distance on the far side of Lavic Lake.

Image: Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture

Cracks on far side of wash; called 'en-echelon' breaks where they step sideways.

Cracks on far side of wash; called 'en-echelon' breaks where they step sideways.

Image: Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture

Splaying of fractures viewed from above.

Image: Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture

Breaks cutting alluvium, nicely lit.

Image: Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture
Aerial Photo of the Surface Rupture

View downward onto site with maximum observed lateral displacement along the Lavic Lake fault. Here a vehicle track and dry creek bed are laterally offset by approx. 370-480 centimeters. The orientation of fractures here is nearly North-South.

View downward onto site with maximum observed lateral displacement along the Lavic Lake fault. Here a vehicle track and dry creek bed are laterally offset by approx. 370-480 centimeters. The orientation of fractures here is nearly North-South.