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Geochronology

We Thought We Understood. A true understanding of the significance of geology is relatively newThere is no more important clue to Earth's past than rocks and the fossils contained within themSuch a perspective is sometimes called historical geology" or geochronology" . Introduction to the ___ol

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Geochronology

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    1. Geochronology Geologic Time 1

    2. We Thought We Understood A true understanding of the significance of geology is relatively new There is no more important clue to Earths past than rocks and the fossils contained within them Such a perspective is sometimes called historical geology or geochronology

    3. Introduction to the ___ologies Paleontology The study of the history and development of life on Earth Usually accomplished with the help of fossils Stratigraphy The study of rock layers Essential for paleontologists since fossils are contained within these layers Biostratigraphy The science of dating rock layers by using the fossils contained within them

    4. Review of Early Principles* James Ussher (1581-1656) Irish Archbishop Catastrophist Earth history explained through Biblical events Static Earth model Planet non-changing Nicolaus Steno (1638-1686) Danish Geologist/Anatomist Law of Superposition, Original Horizontality, Lateral Continuity Believed in Biblical model but did not accept all occurred at once

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