EARTH 119 Chapter Notes - Chapter 13: Continental Crust, Neoproterozoic, Rodinia
7 Nov 2016
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Document Summary
Earth 119- chapter 13: a biography of earth. Hadean eon: the oldest of the precambrian eons; the time between earth"s origin and the formation of the first rocks that have been preserved. Differentiation: the process in which gravity pulls molten iron down to the center of the earth, where it accumulated to form the core. Proterozoic eon: the most recent of the precambrian eons. Craton: a long-lived block of durable continental crust commonly found in the stable interior of a continent. Shield: an older, interior region of a continent. Cratonic platform: a province in the interior of a continent in which phanerozoic strata bury most of the underlying precambrian rock. Rodinia: a proposed precambrian supercontinent that existed around 1 billion years ago. Ediacaran fauna: a precambrian (neoproterozoic) assemblage, which existed from about 600 million years ago to approx 545 million years ago; found on all continents except antarctica.
