 Historical Geology & Paleontology  Earth’s History  A story told in the rock layers  But some chapters are missing  550 millions yrs. Ago to present.

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Presentation transcript:

 Historical Geology & Paleontology  Earth’s History  A story told in the rock layers  But some chapters are missing  550 millions yrs. Ago to present

 Key “Principles” to Reading Earth’s Past  Principle of Uniformity  Principle of Original Horizontality  Principle of Superposition  Principle of Crosscutting Relationships  Principal of Faunal Succession  Index fossils

 The Fossil Record  Methods of fossilization  Non-traditional methods  Frozen  Amber  Tar  Mineralization & replacement  Traditional methods  Cast & mold

 The Geologic Time Scale (Read from bottom up)  Era (3)  Periods (12)  Epochs (7)

 Eras  Cenozoic – recent lifeYoungest  Mesozoic – middle life  Paleozoic – ancient lifeOldest

 Periods  Quaternary Youngest  Tertiary  Cretaceous  Jurassic  Triassic  Permian  Pennsylvanian  Mississippian  Devonian  Silurian  Ordovician  Cambrian Oldest

 Epochs  RecentYoungest  Pleistocene  Pliocene  Miocene  Oligocene  Eocene  PaleoceneOldest

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