DEMS 1701 Lecture 4: LECTURE 4
22 Dec 2018
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Document Summary
Adms 1701: lecture 4 earth science and mass extinction: earth science and mass extinction. Definition: a doctrine that the earth"s history has been dominated by cataclysmic events, rather than gradual processes acting over long periods of time: thoughts prominent in the 17th and 18th centuries. Premise: sudden large events shape the features of the earth (e. g a 10km meteor striking earth, that would change the surface of earth) Definition: the doctrine that earth processes operate at the same rates with then same intensity now, as they did in the past: thoughts prominent in the 18th and 19th centuries through the work of geologist james. Hutton: the present is the key to the past . Premise: earth is shaped by actions of gradual processes. Plate tectonics - an example of gradual processes that change the earth surface. Rates of geological processes are very slow and gradual. Earth forms mostly by slow and gradual process.
