ENV200H1 Lecture Notes - Lecture 5: Deep Time, Water Cycle, Counterpoint

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28 Apr 2013
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Deep time is the existence of the earth itself. Now reps this week maybe this month. Nowadays reps a century we normally say nowadays (ex: in the 21st cent. We do this etc: the millennium clock; instead of having a tick every second he wanted to tick every 100 years and have a cuckoo that comes out on the millennium. Trying to understand deep time : your life span is so small compared to the life span of the earth. If we really could condense 4. 5 bill years into a single yr. Jan 1 00:00:00- the earth is a molten mass/ created. It takes a month for the earth to cool sufficiently for rocks to form. It takes another month for the oceans to accumulate, to set up the hydrologic cycle and for interactions between that was an acidic atmosphere and a basic lithosphere to neutralize the env.

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