New Evidence For Geologically Recent Earthquakes Near Portland, Oregon Metro Area
A paleoseismic trench dug across the Gales Creek fault, located about 35 kilometers (roughly 22 miles) west of Portland, Oregon, documents evidence for three surface-rupturing earthquakes that took place about 8,800, 4,200 and 1,000 years ago.
The findings, published in the Bulletin of the Seismological Society of America,...