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
From the Earth to the Moon (film) From the Earth to the Moon (film) From the Earth to the Moon is a 1958 American Technicolor science fiction film, produced by Benedict Bogeaus, directed by Byron Haskin, that stars Joseph Cotten, George Sanders, and Debra Paget. Production of the film originated at RKO Pictures, but when RKO went into bankruptcy, the film was acquired and released by Warner Brothers. "From the Earth to the Moon" is the only film adaptation of the Jules Verne science fiction novel of the same name. Shortly after the end of the American Civil War, munitions producer Victor Barbicane (Joseph Cotten) announces that