Third Planet - ThirdPlanet 17:00 I.GeologyandHumanAffairs...

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Third Planet 17:00 I. Geology and Human Affairs A. Material goods B. Geologic disasters C. Where we live D. World history E. Philosophy II. The Birth of Modern Geology (Pre- 18 th  Century) A. Q. What is the age of the eart? o A. Several thousand years. B. Archbishop Ussher (1581-1656) o Calculated the world was created. III. The birth of Geology         A. Steno – Father of Stenography/Stratigraphy IV. Relative Dating A. Steno (Niels Stensen 1638-1686)  o Wrote the  Prodromus . o Outlined: Law of Superposition Original horizontatlly. Describred uncomformity. Law of cross cutting relationships          B. William Smith - Engineer (1769-1839) o Principle of faunal succession – fossils is an orderly progression from  oldest to youngest. C. James Hutton (1726-1797) o Uniformitarianism- The present is the key to the past. D. Charles Lyell (1797-1875) o Wrote: Principles of Geology in 1830. o The book influenced Charles Darwin. 3.96 old rock from Canada. A new one is 4.2!
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17:00 -The oldest mineral is 4.404 billion year old zircon.
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17:00 Early atmosphere and ocean. Volcanic gases: -H2O – dihydrogen oxide – water -SO2 – sulfur dioxide -CO2 – Carbon dioxide -NO2 – Nitrogen dioxide -H20 (steam) -> water (liquid) -Oceans existed by 3.8 billion years ago (age of the oldest sedimentary rock)
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Third Planet - ThirdPlanet 17:00 I.GeologyandHumanAffairs...

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