lunar tiltmeter
1geology — /jee ol euh jee/, n., pl. geologies. 1. the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is… …
2Mount Pinatubo — The eruption column of Mount Pinatubo on June 12, 1991, three days before the climactic eruption. Elevation …
