Petrology Petrology Petrology (from the Greek πέτρος, "pétros", "rock" and λόγος, "lógos", "subject matter", see -logy) is the branch of geology that studies rocks and the conditions under which they form. Petrology has three subdivisions: igneous, metamorphic, and sedimentary petrology. Igneous and metamorphic petrology are commonly taught together because they both contain heavy use of chemistry, chemical methods, and phase diagrams. Sedimentary petrology is, on the other hand, commonly taught together with stratigraphy because it deals with the processes that form sedimentary rock. Lithology was once approximately synonymous with petrography, but in current usage, lithology focuses on macroscopic hand-sample or outcrop-scale
This Is What You Want... This Is What You Get band, with no contributions from either Levene or bassist Pete Jones (who contributed to several tracks on "Commercial Zone"). The song "The Order of Death" appears in the 1990 science fiction-horror film "Hardware" and on the soundtrack to the 1999 horror film "The Blair Witch Project". It was also featured in the "Miami Vice" episode "Little Miss Dangerous" and the "Mr. Robot" episode "eps2.7_init_5.fve". "This is Not a Love Song" appears in the film "Waltz With Bashir". The line "This is what you want... This is what you get" appears in both "Bad Life" and "The Order of Death". All