A present-day minor lithospheric plate subducting beneath the North American Plate, the Farallon Plate is the remnant of a plate that was once large. The amount of Farallon crust which has been subducted can be estimated from the area of Pacific crust which still exists, assuming symmetrical spreading from the Pacific–Farallon constructive margin. The present-day remnants are also called the Gorda, Juan de Fuca, and Cocos Plates.