Three Oregon Quakes
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4.8
178km W of Bandon, Oregon
2016-11-28 11:07:53 (UTC)
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4.9
221km W of Bandon, Oregon
2016-11-28 04:34:42 (UTC)
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2.4
14km NNW of Bandon, Oregon
2016-11-28 02:06:37 (UTC)
4.8
4.9
2.4
4.8
4.1
4.1
An earthquake hit near Woodburn around 9:30 p.m. Monday, according to the U.S. Geological Survey.
The minor quake — approximately magnitude-3 — hit about 2 miles west of Interstate 5 near Woodburn Premium Outlets. The quake was about 14.8 miles deep.
No damage was reported immediately after the temblor.
Grant Butler of the Oregonian reports, “A pair of moderate earthquakes shook the coast of Northern California and Southwest Oregon late Saturday and Sunday morning.According to the United States Geological Survey, a 5.0 earthquake occurred at 10:01 p.m. Saturday in the Pacific Ocean about 93 miles southwest of Gold Beach, Oregon, or about 124 miles to the Northwest of Eureka, California.
“The quake was followed by a 4.6 earthquake that hit at 2:50 a.m. Sunday off the Oregon Coast approximately 97 miles west of Brookings.
“Neither earthquake prompted tsunami advisories from the National Tsunami Warning Center.”
Wired reports at Oregon’s Mt. Hood, the USGS has noticed a swarm of small earthquakes (all less than M2) that started on Sunday.
Right now, the earthquake swarm at Mt. Hood is centeredjust to the south of the main edifice (see below) and most of the earthquakes are between 3 and 5 kilometers below the surface. This is likely the zone where magma is being staged as it ascends from its source. Research by Adam Kent and others (including myself) has found that the magmatic system beneath Hood is likely dominated by a big pile of high silica crystals and magma (the crystal mush) that then interacts with new, hotter and less silica-rich magma that intrudes, producing a hybrid magma that compositionally is in between the two. These earthquakes may be a sign of new magma rising and stalling in that “crystal mush”—but very little of the time is the system in a state that it can erupt.
Oregon Earthquakes: in the last 30 days the northern corner of Nevada near Lakeview has experienced 24 earthquakes, the biggest was on 12/6 with a magnitude of 4.1.
Off the coast of Oregon there have been four with the two biggest on 12/7 measuring 3.6.
Yesterday, the corner of Nevada closest to the border of Oregon and California, had the second largest earthquake in 30 days, a 4.2 magnitude. In the last 30 days there have been 40 quakes over 2.5, 62 quakes of all magnitudes in the last seven days and 20 quakes, including the 4.2, in just the last day. The largest quake was a 4.7 on September 14th. Scientists are puzzled
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