The Rock Cycle Weathering and Erosion Plate Tectonics Mountain Building Mass Wasting Running Water Groundwater Geologic Maps

     Geology, from the Greek geo and logos, is defined as the study of the Earth.  It is generally divided into two broad areas-physical geology and historical geology.  Physical geology is the study of Earth materials, such as minerals and rocks, as well as the processes operating within the Earth and upon its surface.  Historical geology examines the origin and evolution of the Earth, its continents, oceans, atmosphere, and life.