GEOL 1001 Lecture Notes - Lecture 1: Protoplanetary Disk, Planetesimal, Planetary System
Document Summary
Nature and principles of geological science: physical geology. The scientific study of the earth and other celestial bodies. Perform investigation to locate and extract energy resources. Explore mineral resources: scientific research in geology. I. e: earthquakes - understanding cause and effects. Difference between earthquakes on the east and the west coast. Understand threats posed by volcanoes in populated regions. Coping with extreme weather conditions in vulnerable area: earth origins. Earth resulted from the big bang that occurred about 10 - 20 billion years ago. Earth"s first day began 4. 5 billion years ago. It was just dust and gast; very hot. Continued heating in earth"s interior, resulting from primordial heat and radioactive decay led to differentiation (physical and chemical separation) of solid and molten materials, segregation occurred in response to gravity. Crust -> mantle -> core (internal zonation created) Highest density material accumulated near earth"s center from earth"s core. Least dense material rose toward surface from earth"s crust.
