Geol 101 Geological Time and Rock Record Continued

Geol 101 Geological Time and Rock Record Continued - Geol...

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Geol 101 Geological Time and Rock Record Continued 14/09/2007 11:31:00 Early attempts to measure geologic time 460 B.C. Herodotus estimates the age of the Nile Delta Sediments  o Age = thickness/rate o Attempted to construct a ‘pile’ of sediments to yield record Pile = 100 miles thick, average rate 1”/100 years  o Decided that the Earth must be 80 – 100 thousand years old while  erosion can be 200 – 500 thousand years old 1646 Arch Bishop Ussher of Ireland o Counted the generations in the Bible o Concluded that the Earth was created Oct. 26 th , 4004 B.C. at 9 am 1800’s James Hutton o Observed the Grand Canyon – used erosion rates o ‘Earth much be around 25 million years old’ What over-arching theory opposes gradualism/uniformitarianism?
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This note was uploaded on 04/28/2008 for the course GEOL 101 taught by Professor Olinsky during the Fall '08 term at Texas A&M.

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Geol 101 Geological Time and Rock Record Continued - Geol...

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