A long-lost slab of Earth’s crust may be pulling away the bottom of the oldest part of North America, scientists say ...

Related: Earth's crust is peeling away under California The researchers ... tectonic plate called the Farallon plate. The Farallon plate and the North American plate once formed a subduction ...

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 ...