Geology of the United States A slice of the Earth from the Pacific Ocean through the Pacific Northwest might look something like the adjacent image. Beneath the Cascades, a dense oceanic plate plunges beneath the North American Plate; a process known as subduction. As the oceanic slab sinks deep into the Earth's interior beneath the continental plate, high temperatures and pressures allow water molecules locked in the minerals of solid rock to escape. The water vapor rises into the pliable mantle above the subducting plate, causing some of the mantle to melt. This newly formed magma rises toward the Earth's surface to erupt, forming a
Land Beneath the Ground! Volume 1. There is a "DuckTales" episode called "Earth Quack" which is basically a retelling of the same story. The difference is that Donald is not in the cartoon episode and Gyro Gearloose, Mrs. Beakley, Webby Vanderquack, and Duckworth were added. The Terries and Fermies have since reappeared in the "DuckTales" reboot, in the episode "Terror of the Terra-firmians". Land Beneath the Ground! "Land Beneath the Ground!" is a Scrooge McDuck comic strip story that appeared in 1956 in the comic book Uncle Scrooge, written by Carl Barks. Scrooge is worried about earthquakes damaging his money bin and is determined