EESA06H3 Study Guide - Uniformitarianism, Paleozoic, Plat
6 Apr 2013
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Document Summary
Earth is about 4. 56 billion years old. Avicenna- was a persians geologist - mountains formed after a long series of events pre dating humans. Shen kuo - was a chinese naturalist 0 concept of geologic or deep time ( thought the earth was old ) Ancient greeks recognized fossils embedded in rocks now on tops of mountains ( strata ) Heavily based in christian religion : ( the earth was created in 7 days, climate is fixed, till, sand and gravel = diluvium ( from biblical floods) Catastrophism theory - from georges cuvier was the idea that earth has been affected in the past by sudden, short lived, violent events, possibly worldwide. James hutton 1726-97 - 1st recognized unconformities with layers of rocks and the igneous origin of granite ( big change ) Proposed concept of unformitarianism ( the present is the key to the past ) ( small change )
