Something similar is expected on the San Andreas fault in Southern California if there is a 7.8 quake. The Pacific plate will rise up several feet and move north several feet.
Every pipeline, aqueduct, road, and railroad will be severed. The post-quake situation in the LA basin will be dire.
there have been a couple of movies made about that.
My favorite is the 1974 version with Charlton Heston and Ava Gardner.
Great Earthquakes of the Pacific Northwest
I would expect it and its accompanying mega-tsunami to occur within the next ten years because of the Earth's weakening magnetic field.