EESA06H3 Lecture 2: Lecture 2.docx
12 Apr 2012
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Formation f planet earth 4500 million years before present continental drift" and. 4. 5 billion years old earths age. Continental drift the larger plates in which the continents are embedded. Alot of problem when alfred made is theory. Magnetism use it to identify where rocks where, how old etc. Re assembling pangea (wegener, 1912) -alfred wegener proposed that continents moved by ploqinf rgeoufh rgw aw dlooe. Pangea consist of: laurasia(northern part) (n. america and asia) gondwana (southern continents)* If you identify certain rock, it shows climate, climate belts, cold artic areas. Making sense of paleobiology south america africa, africa-india-antarctica, etc fossils. G250 million year old glaciers striations, modern glacier, the ore bodies these are the commercial mineral deposit. Generating sound and it is reflected back and the time it takes shows something. Swath bathymetry accurate maps of the ocean floor. Mid-ocean bridge in the middle f the atlantic ocean. Harold hess introduced idea of sea floor spreading (1962).
