Geological Time - Geological Time 1) Time a. What is time?...

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Geological Time 1) Time a. What is time? i. A continuous succession of instants. ii. Only constant constantly changing. b. Analyzing Time i. 2 ways to measure time. 1. Cycle a. Beginning and end point are the same. b. Noncycle i. Unidirectional 2. Scales a. Short i. Hours ii. Days iii. Etc. b. Long i. Millions of years 1. Ma ii. Billions of years 1. Ga 3. Actualism a. Processes today occur in the same way and at the same rates as they have in the past. b. Natural laws have not changed. c. Are there fast geologic processes? i. Landslides
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4. Geologist evaluate the past using 2 data sets a. Relative dating i. One event occurred before another 2) Relative time a. Principles of Dating Sedimentary rocks i. Principles of original horizontality 1. All sedimentary rocks are horizontal at time of deposition ii. Principle of superposition 1. Any sedimentary layer overlaying another layer is younger, provided that the layers have not been overturned. iii. Principles of Original Continuity
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This note was uploaded on 04/07/2008 for the course GEOLOGY 101 taught by Professor Wareham during the Spring '08 term at CSU Fullerton.

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Geological Time - Geological Time 1) Time a. What is time?...

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