Movement across the North American Craton is obvious today.
Beginning with a 6.0M earthquake occurring at the very far Northwest tip of the edge of the craton, in Alaska, at the Malaspina Glacier ice / rock flows.
The large earthquake was followed by dozens of mid 3.0M events.
- 2014-07-17 11:49:37 UTC
- 2014-07-17 04:49:37 UTC-07:00 at epicenter
- 2014-07-17 06:49:37 UTC-05:00 system time
60.217°N 140.550°W depth=14.8km (9.2mi)
Here is a diagram of the North American Craton for comparison of the activity vs. the location of the plate “edge”:
In addition to the earthquake in Alaska, there were also several mid-3.0 magnitude earthquakes which occurred further South along the edge of the craton, at Yellowstone supervolcano, Kansas / Oklahoma fracking injection operation, and at the active Southern California Salton Sea volcanic buttes.
A newly “active” volcano in Southern California? Yes.
Screenshots below show the Yellowstone supervolcano magma chamber earthquake (3.1M) occurring between multiple volcanic sites:
To round off the craton edge movement, following the earthquake in Alaska, and the event near Yellowstone, we see noteworthy movement in Kansas (not normally earthquake prone) occur at a fracking operation:
Summed up, the movement in the NW is causing displacement farther to the Southeast along the edge of the plate, due to pressure transferring multiple thousands of miles along the mainly rigid formations which make up the unsubducted plate.