Recent earthquake activities throughout the U.S., including in December in Maine (2.3 magnitude) and Arizona (3.3), may indicate the North American Plate is being “pushed.”
The North American Plate, or craton, generally moves in a southwest direction away from the Mid-Atlantic Ridge, and is not subjected to subduction. “Although subduction is believed to be the strongest force driving plate motions, it cannot be the only force since there are plates such as the North American Plate which are moving, yet are not being subducted.”
On Monday evening, December 12, the central coast of Maine was hit by two small earthquakes measuring 2.3 and 1.9 magnitude. Although minor, what is unusual about these quakes is that they occurred virtually simultaneously, only one second apart even though their epicenters were about 4 miles apart.
Both earthquakes occurred in Hancock County, with one of the epicenters near Blue Hill, Maine, and the other in Sedgwick. More than two dozen residents reported feeling the quakes, and one resident in Sedgwick reported hearing a “boom” as loud as thunder when the quake struck.
The earthquakes occurred just one day after two other quakes were recorded in the state of Maine on Sunday. The Sunday quakes measured 1.0 and 1.4 and occurred in central Maine about 80 miles away from those on Monday. According to Justin Starr, a research assistant at the Weston Observatory of Boston College, “This area of Maine does get a lot of earthquakes,” but he also went on to say that he “didn’t know why there has been a flurry of activity in the area.”
On Tuesday, December 13, a magnitude 3.3 earthquake occurred in northwest Arizona. The earthquake was very shallow at .2 miles, and its epicenter was located about 10 miles from a dormant volcano chain known as the Hat Knoll Volcano/Fault. There were also possible fracking sites in the area (see “Fracking Open the Earth”).
While both volcanic and earthquake activities appear to be on the rise worldwide, many of the earthquakes, like the one in Arizona and a number of others over the past several months including a 2.7-magnitude quake in Georgia near an old, dormant super volcano, “…are occurring near sites which have deep earth shafts dug into the upper crust of the Earth (fracking or nuclear sites), or at dormant volcano areas with natural deep tubes/shafts which penetrate into the Earth’s crust.” (See article posted by Dutchsinse.)
It is Dutchsinse’s theory that the North American Plate is being pushed, and as the crust is displaced, the areas that are the weakest would be “where shafts run deep,” such as fracking sites, nuclear sites, and dormant volcanoes. He points out that those deep tubes or drill sites are “the first to show the deep crust movement (magma or gases),” and believes these sites may all be experiencing being “pushed along the edge of the North American craton by the heavy activity in the Western Pacific.”
If the North American Plate is being pushed as Dutchsinse theorizes, then states along the edge of the craton may experience additional movement in the next several weeks, including areas from the West Coast to the East Coast. This movement may also explain the flurry of activity in Maine this week as well as increased earthquake activities around fracking sites and dormant volcanoes across the U.S.
And either by “coincidence” or perhaps in response to the recent earthquake activity in northern Arizona, the Arizona Geological Survey released a new video entitled “The Lake Mary Fault: Potential Earthquake Threat to Flagstaff, Arizona.” Flagstaff is the home of Sunset Crater Volcano National Monument and is just north of the San Francisco Volcanic field area of volcanoes in northern Arizona. Prior to the 3.3 magnitude earthquake on Tuesday, the area had experienced a swarm of earthquakes in June of this year along the Lake Mary Fault.
The Earth is a constantly changing dynamic system. As we continue to study Earth, we gain deeper perspective about our home planet, understanding that “Civilization exists by geological consent, subject to change without notice.” – Will Durant
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