EESA06H3 Lecture Notes - Lecture 19: James Hutton, Oldest Dated Rocks, Continuity Equation
22 May 2016
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Document Summary
Uniformitarianism principle that geologic processes operating at the present are the same processes that operated in the past. The present is the key to the past (uniform rate) Actualism physical laws are independent of time and location (same meaning as uniformitar. ) Geological time scale a sort of calander to which events and rock units can be referred. Earth was only 6,000 years old biblical chronology, noah"s flood. Features we observed in rocks and landscapes where supernaturally and catastrophically. James hutton father of modern day geology . Charles lyell principles of geology book geological features could be explained by present-day processes. Numerical age (absolute age) age given in years or some other unit of time. Relative time the sequence in which events took place (not measured in time units) Ex: grand canyon can be analyzed in 4 parts: horizontal layers of rock inclined layers rock underlying the inclined layers (plutonic + metamorphic rock) the canyon itself, carved into these rocks.
