Term
| Principle of Uniformitarianism says that |
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Definition
what happens today happened in the past (possibly at different rates)
example. Erosion in a flood then a drought |
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Term
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Definition
| How old something is compared to something else. |
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Term
| Law of superposition says that older rocks are |
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Definition
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Term
| the oldest rocks are on the top or bottom? |
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Definition
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Term
| Cross-cutting relationships are |
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Definition
| breaks/abnormalities are younger then the layers that it cuts through. |
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Term
| Principle of original horizontality states that |
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Definition
all sedimentary rock layers are formed as horizontal layers _______________________
_______________________
_______________________ |
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Term
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Definition
| organized the sedimenary rock layers from around the world in a time line |
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Term
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Definition
| breaks in the rock record (missing strata) |
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Term
| unconformities are caused by |
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Definition
| magma, plate tectonics or erosion |
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