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
What Is Love in "Just Dance 2017". In 2009, German DJ Klaas remixed the song under the title "Klaas meets Haddaway – What Is Love 2K9". This remix charted in several European countries. In 2016, Belgian DJ Lost Frequencies released a cover titled "What Is Love 2016", as a single from his debut album "Less Is More". It was actually already produced back in 2014 as a remix for Jaymes Young's cover version of "What is Love". This version was remade for the album and became a hit on a number of European singles charts and topped the Belgian Ultratop Official Singles Chart.