EESA06H3 Lecture Notes - Lecture 6: Carbonate Rock, Passive Margin, Divergent Boundary

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16 Dec 2012
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Pwrpont,choose layout;insert text box and pics,2ft by 3ft size ref have to be on poster(corner or border) 4. 56 ga earth age 3800 million yrs ago. Have some idea what is the geological timescale. Bacteria decompose the soft parts so left hard shell. First philosopher found fossils at the mountain topvery prevailing. Rock uplifted nd sediment lost by windleavng behind fossils we can see. Ammonite(aragonite) fossil is colored by these elements (fe,mn,al,ba)lec. Trace fossils-show evidence what the animal did animals burrow for the shelter nd end result is changing the sediment. Sedimentary geologist-rocks are sometimes destroy the fossil on top not bottom of oceanlec. Very common in rocks in limestone,carbonate rock in south ontario Sea lily-lives in shallow waters and there stems (rings) are broken up because of storms. Fossil tell us what kind of creature live there, nd the environment it will tell us tht very shallow\ Morphology(how tall or short ppl are cud tell environment)

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