Petrology description of rocks while petrography is the speciality that deals with microscopic details. In the petroleum industry, lithology, or more specifically mud logging, is the graphic representation of geological formations being drilled through, and drawn on a log called a mud log. As the cuttings are circulated out of the borehole they are sampled, examined (typically under a 10× microscope) and tested chemically when needed. Petrology utilizes the fields of mineralogy, petrography, optical mineralogy, and chemical analysis to describe the composition and texture of rocks. Petrologists also include the principles of geochemistry and geophysics through the study of geochemical trends
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