Igneous petrology Igneous petrology Igneous petrology is the study of igneous rocks—those that are formed from magma. As a branch of geology, igneous petrology is closely related to volcanology, tectonophysics, and petrology in general. The modern study of igneous rocks utilizes a number of techniques, some of them developed in the fields of chemistry, physics, or other earth sciences. Petrography, crystallography, and isotopic studies are common methods used in igneous petrology. The composition of igneous rocks and minerals can be determined via a variety of methods of varying ease, cost, and complexity. The simplest method is observation of hand samples with the
This Is What You Want... This Is What You Get He then flew over to London and presented them to Richard Branson as the finished new PiL album for Virgin Records: "Commercial Zone". For his part, John Lydon decided to completely abandon the tapes and re-record the whole album from scratch with session musicians. This new version of "Commercial Zone" became "This Is What You Want... This Is What You Get" in 1984. "The Order of Death" is a reference to the film "Copkiller", also known as "The Order of Death". The line "This is what you want... This is what you get", which gives title to the album, appears