Hector Mine surface rupture after 1999 earthquake in southern California.
Images
Hector Mine surface rupture after 1999 earthquake in southern California.
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.
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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.
Splaying of fractures viewed from above.
Splaying of fractures viewed from above.
Breaks cutting alluvium, nicely lit.
Breaks cutting alluvium, nicely lit.
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.