Earth Sciences 2240F/G Lecture Notes - Lecture 2: Impact Crater, James Hutton, Gradualism
11 Sep 2020
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Nicolaus steno: first to try understand history of earth"s surface: early surface was igneous rocks. Thomas burnet: assumed all uneven features of earth"s surface result from noah"s flood. Archbishop ussher: pronounced earth came into existence oct 22 4004 b. c. Baron georges cuvier: study sedimentary rocks forming layers of paris basin recognized layers of boulders above layers of fine-grained sands and interpreted as repeated stages of sudden flooding: only mechanism of flooding was series of huge catastrophes. History of earth was record of unique events. James hutton: believed in deity bit not in divine intervention or conformity of natural processes. Catastrophic origin permitted to intrude upon geology theories: Law of uniformities: present is key to past . Processes observed today always did and will continue at similar rates: despite existence of asteroid impact crater, cartographers refuse to put it on map of.
