The study found compact sediments along the coast of Washington and northern Oregon, a result that suggests that the area could be more prone to
producing larger quakes than subduction zone areas farther south with less compact sediments.
Not exact matches
The findings also confirm that the entire area of the Himalayas is capable of
producing large earthquakes like the magnitude - 7.8
quake that struck Nepal in 2015.
New Madrid - area faults
produced earthquakes as
large as 7 or 8 - magnitude in the early 1800s and have
produced smaller
quakes since then.
In fact, five fault segments failed simultaneously,
producing a
quake much
larger than the model had predicted.
In this case, the
quake was caused when a 620 - mile - long (1,000 kilometers) stretch of the Nazca plate, an oceanic plate that forms a
large swath of the Pacific Ocean floor, lurched deeper beneath the South American plate,
producing the only 9.5 - magnitude
quake on record.