Physical Versus Historical Geology a Historical geology Chronology of events, both physical and biological, that have occurred in the past The past is the biggest clue to the present. Physical geology a Concerned with understanding the processes and the materialsPhysical Versus Historical Geology ◼ Historical geology ◼ Chronology of events, both physical and biological, that have occurred in the past. ◼ The past is the biggest clue to the present. ◼ Physical geology ◼ Concerned with understanding the processes and the materials