I'm really not much into dreams, since most are the equivalent of defragging a hard drive. I remember almost none of mine, I just don't care. But occasionally, dreams have a plot where events seem to transpire in real time rather than dream time. To get from point A to point B in the dream, the distance must be traversed, rather than a sudden shift in dream environment. Those types of dreams are at least interesting to me, and such was the case with my earthquake dream.
In the interest of full disclosure, I'm a reasonably informed layman on the subject of earthquakes, and was aware of Missouri's New Madrid earthquakes of the early 19th Century prior to my dream, though I'd never imagined the Mississippi Valley disappearing beneath the ocean.
I'm passingly familiar with Edgar Cayce, the sleeping prophet, because I was interested in Chariots of the Gods and Lost Continent type books in the 70s. I'd never before read of predictions similar to my dream, though. I've also never read Ruth Montgomery or Arthur Ford.
Several raised the question of how a subduction of the Mississippi Valley and oceanic encroachment could occur. I don't really know, but here are a few thoughts, just for the sake of pursuing them...
The Earth's diameter is 8,000 miles, and 4,000 miles to the core. The crust is estimated to be about 30 miles thick. Most Earthquakes take place in the crust. Most, but not all...
"Rarely are seismologists lucky enough to deploy a portable seismic array and record a magnitude 8 earthquake less than 600 km away, but that is just what happened last June. We deployed 19 broadband stations during April in central Bolivia. Less than two months later, on June 9, 1994, a Mw = 8.3 earthquake occurred 636 km beneath northern Bolivia. This is the largest deep earthquake to occur since the installation of modern seismic stations and was reportedly felt as far away as Montreal, Canada. This truly amazing earthquake was recorded on our portable broadband array."
LINK
This huge earthquake occurred over 400 miles deep, in the Earth's mantle. There is much we don't know about the structure, pressures, or environment down there. Many were surprised that an earthquake could occur this deep.
I actually felt it in Los Angeles. I was lying on the floor, and felt a small quake. I flipped on the TV, expecting to see the SoCal seismo-cams... nothing. Strange, given that this was less than six months after the Northridge Quake. It wasn't until a few hours later that reports started coming in from South America, and mention was made of the quake being felt in Montreal. I factored for time zones, and realized this was with quake I'd felt.
If it's possible for Los Angeles to feel a quake in Bolivia, it's possible for Los Angeles to feel a quake in Missouri.
A subduction of the Central United States would only need to be of a mile or two to see the entire region flooded by the Gulf of Mexico. This is less that 0.5% of the depth of the deep Bolivian Quake, and 0.05% of the depth to the center of the Earth.
And a subduction wouldn't necessarily require a corresponding displacement elsewhere, and certainly not immediately. Deep Earth structures might absorb the subduction for thousands of years.
For that matter, a subduction might just be a response to some other unrecognized bulging of the Earth's surface elsewhere.
So, the mechanism for such a catastrophic earthquake, may, in fact, exist.
