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
What Lies Beneath World Tour What Lies Beneath World Tour What Lies Beneath World Tour is the second world tour by Finnish soprano Tarja Turunen to promote her third album, "What Lies Beneath", released by Universal Music on September 1, 2010. Tarja started the tour performing in several metal festivals in Europe, including the Wacken Open Air in Germany and the Graspop Metal Meeting in Belgium, with special concerts at Miskolc Opera Festival and at the Masters of Rock, where she performed accompanied by a full philarmonic orchestra and choir. Also in 2010 Tarja played a European tour and supported Alice Cooper in 9 concerts