Seismic mapping of North America has revealed that an ancient slab of crust buried beneath the Midwest is causing the crust ...

the Pacific plate and the North American plate. It runs 800 miles along the coast of California. Scientists have said that ...

For all its varied landscapes, California’s Central Valley is ... Plate shoved east and subducted—slid beneath—the North American Plate. Over millions of years, this movement scraped off ...

To the west of the fault is the Pacific plate, which is moving northwest. To the east is the North American Plate, which is moving southeast. Los Angeles, located on the Pacific plate, is now 340 ...

The range extends from British Columbia to northern California ... About a hundred million years ago, the plate smashed into the North American continent, folding and crumpling into a mountain ...