based on the symptoms present. The ability to. distinguish between a symptom and a cause. can speed the process up considerably. The tabulation above lists a few of the âmost. likelyâ symptoms and causes of pump failure or. less than expected performance.
Definition of PETROLOGY. : a science that deals with the origin, history, occurrence, structure, chemical composition, and classification of rocks. â petÂ·roÂ·logÂ·ic \Ëpe-trÉ-Ëlae-ËlÃ¤\ jik orÂ·petÂ·roÂ·logÂ·i \-cal-ji\ kÉl. adjective
Precambrian rocks rock,aggregation of solid matter composed of one or more of the minerals forming the earth's crust. The scientific study of rocks is called petrology. Rocks are commonly divided, according to their origin, into three major classesâigneous, sedimentary, and metamorphic......he rocks of this region, and of the early Precambrian as a whole, are generally granite granite,coarse-grained igneous rock of even texture and light color, composed chiefly of quartz and feldspars. It usually contains small quantities of mica or hornblende, and minor accessory minerals may be present......