EARTH121 Chapter Notes - Chapter 1, 3, 6, 7, 12: Aureola, Himalayas, Permineralization
27 Jan 2018
School
Department
Course
Professor
Document Summary
Chapter 1: an introduction to geology and plate tectonics. The big bang happened 13. 7 billion years ago. Historical geology: understanding the origin of earth and its development through time. Uniformitarianism: the physical, chemical and biological laws that operate today have also operated in the geological past the same forces and processes that we observe today have been around for a very long time james hutton. Radioactive dating and relative ages (discovered by nicholas steno) can be used to determine the age of the earth. Catastrophism: earths landscapes had been shaped by great catastrophe"s. The sun and the inner core of the earth powers the earth. The 7 major plates: eurasian plate, north american plate, south american plate, pacific plate, australian-indian plate, african plate, antarctic plate. Geologists use radioactivity to date the earth radiometric dating. Alfred wegener the theory of continental drift. Inner and outer core: composed of iron-nickel alloy, convective flow of metallic iron within the outer core generates.
