Geology (from the Greek: γη-[ge-, "earth"] and λογος [logos, "word", "reason"]) is a science (science that studies the earth, its composition, structure, physical properties, history, and formation process. Geologist has been helpful in determining the age of the earth is estimated to be about 4.5 billion (4.5x109) years, and determined that the Earth's crust is divided into tectonic plates move o
ver the semi-liquid mantle (astenosfir) through a process often called tectonic plates. Geologists help locate and organize natural resources on earth, such as oil, coal, and metals such as iron, copper, and uranium and other minerals that have economic value, such as asbestos, perlite, mica, phosphates, zeolites, soil clay, pumis, quartz, and silica, as well as other elements such as sulfur, chlorine, and helium.
