Tuesday, November 13th, 2012 — Hurricane Sandy’s destructive rampage on the East Coast — tens of billions of dollars in damage, dozens dead or injured, massive power outages, transportation disruptions — has reminded Oregonians of a similarly potent peril that periodically awakens their state’s coast. It isn’t a superstorm like Sandy that is on their minds. It is a major earthquake such as the one in 1700 that rearranged Oregon’s geological features as if they were furniture in a department store showroom. Geologists believe that 13 major quakes and tsunamis have shaken the Northwest over the past 7,500 years.