GEOL 1003 Chapter : Historical Geology 1003
Document Summary
1. physical & chemical (physicohemical: inorganic physical and chemical processes shaping earth. 4 subsystems : atmosphere, biosphere, hydrosphere, lithosphere. Catastrophism; global floods caused by supernatural forces formed most of the rocks visible at earth"s surface. Promoted in late 18 century by werner. Earth has been affected by sudden disasters related to supernatural forces. Uniformitarianism: rocks formed as a result of the same process that were currently operating at or near the earth"s surface. Originated by james hutton in 1780"s, referred to as father of modern. The present is key to the past . Popularized by charles lyell in 1830"s in the book principles of geology . Natural laws have not varied over the course of geologic time. Crust: continental and oceanic crust - part of lithosphere. Uppermost mantle- sold & rigid - part of lithosphere. Endless pathway of rocks of varying kinds transformed into rocks of other kinds (slide.
