In a quake caused by what is called a slip-strike fault, like the San Andreas, the blocks of earth slide past each other horizontally.
12.
Koyanmas is about 7 / 10 mile ( 1.1 km ) east of Target Resources'Selinsing ore body and on a parallel strike fault system.
13.
Koyanmas is about 7 / 10 mile ( 1 . 1 km ) east of Target Resources'Selinsing ore body and on a parallel strike fault system.
14.
At the southeast section of this area, the Sumatra fault zone bends towards south and merges into the extensional south striking fault system of the Sumatra trait.
15.
Alternately, the OS appears to coincide with a gravitational boundary in the upper crust that has been mapped striking southeast to The Dalles on the Columbia River, where there is a swarm of similarly striking faults.
16.
And though the faults in this area are not notably seismogenic, the southeast striking faults seem to be en echelon with the Olympia structure ( fault ? ), and headed for the definitely active Saint Helens Zone; this appears to be a large-scale structure.
17.
The region is also traversed by six major slip-strike fault systems with hundreds of related faults, many of which are " sister faults " of the infamous San Andreas Fault, all of which are stressed by the relative motion between the Pacific Plate and the North American Plate or by compressive stresses between these plates.
