Term
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Definition
| the acutal age of a rock, fault or fossil in terms of a number |
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Term
| 2 methods of calculating absolute age |
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Definition
1. Index Fossils
2. Radiometric Dating |
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Term
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Definition
| fossils used to determine absolute age of a rock layer |
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Term
| In order to be considered Index fossils they must be |
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Definition
1. Widespread around the world
2. Easily Identified
3. Lived on earth only a short period of time
4. Must be present in large numbers |
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Term
| Ammonites and Trilobites are two examples of |
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Definition
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Term
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Definition
| Most accurate method to find absolute age |
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Term
| Elements commonly used in radiometric dating |
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Definition
| Uranium, Potassium, Rubidium and Carbon |
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Term
| Carbon 14 dating is used to determine absolute age of ______ |
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Definition
| formeraly living material (ex. wood, bones, shells, ect) |
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