Relative time scale
Absolute time scales
Rates of geological processes
GEOLOGIC TIME (Chapter 8) - Lecture Outline
Last updated: 03/05/07
1. The concept of geologic time
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Relative time scale |
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Absolute time scales |
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Rates of geological processes |
2. Principles of relative age
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Superposition | ||||||
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Original horizontality | ||||||
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Original continuity | ||||||
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Cross-cutting relationships | ||||||
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Inclusions | ||||||
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Faunal succession | ||||||
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Unconformities
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Interpretation of relative timing | ||||||
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Large scale relative correlation |
3. The geologic time scale
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Eons |
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Eras |
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Periods |
4. Absolute time
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Eastern cultural view | ||||
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Western cultural view
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5. Radioactivity, isotopes and geochronology
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Review of terms |
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Radioactive decay |
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Half lives |
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Radioactive systems |
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Measuring half lives |
6. Other geochronological methods
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Magnetic polarity time scale |
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Dendrochronology |
7. Toilet tissue time scale
