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
The NLT Study Bible of the NLT Study Bible. The NLT Study Bible is available in hardback, bonded leather, and "LeatherLike" bindings. It is also available electronically for the Libronix Digital Library System and WORDsearch platforms as well as a pocket edition from Laridian. A Kindle edition is coming soon. The NLT Study Bible The NLT Study Bible was released in September, 2008, by Tyndale House Publishers, Inc. following a decade long process from original conception to publication. A Genesis "sampler" was released in April of the same year. Featuring a brand new set of notes and features put together by what Tyndale calls