"...and Nevada will have a seacoast."

Actually, if you went to Verdi (which is right on the California-Nevada border), hopped into a time machine, and went back 60 million years...voila! Beach front property!

All the land just east of Nevada was pushed up by the impact of the tectonic plate movement hitting a relatively stabile continental mass. I believe the impact of what is now India did the same thing, causing the formation of the Himalayas.