Magma chamber of magma chambers can be mapped using seismology: seismic waves from earthquakes move more slowly through liquid rock than solid, allowing measurements to pinpoint the regions of slow movement which identify magma chambers. As a volcano erupts, surrounding rock will collapse into the emptying chamber. If the chamber's size is reduced considerably, the resulting depression at the surface can form a caldera. Magma chamber A magma chamber is a large pool of liquid rock beneath the surface of the Earth. The molten rock, or magma, in such a chamber is under great pressure, and, given enough time, that pressure can
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