GEOG 2OC3 Lecture Notes - Lecture 7: Laurentide Ice Sheet, East African Rift, James Ussher
30 Jan 2019
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Siberia: due to low ocean levels caused by glaciation these people were able to cross over. In reality, it is likely that each of these situations happened, however scientists and archaeologists are constantly uncovered clues as to how these peoples made it into. What is conventional wisdom: conventional wisdom is a body of ideas generally accepted as truth. A chronology of discoveries: last 500 years: technological revolution + scientific discovery, 400 years ago: using christian bible, james ussher asserted that earth was less than. This was eventually rejected for far more scientific idea by geologist. Radiocarbon dating: works on the principle of stable radioactive decay, c14 (one of the three isotopes of carbon. C14 that is in situ (meaning already in the body) begins to decay into another isotope, N14: since scientists know that the decay rate of c14 is constant, by looking at the ratio of.
