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8 Cards in this Set
- Front
- Back
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what is the law of superposition? |
states that sedimentary layers are deposited on top of one another so that the lower layers are older than the ones at the top |
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what is the law of original horizontality? |
states that all sedimentary rocks were originally laid down in near horizontal postitions |
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what is the law of cross-cutting relationships? |
states that faults or igneous intrusions must be younger than the rocks that they cut. |
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what is the principle of included fragments? |
states that any sedimentary rock that has fragments if another rock in it must be younger than the rock included rock fragments |
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what is an oolith? |
1mm diameter spherical carbonate grains found in a certain limestone (oolithic limestone) |
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what is dip? |
the inclination of a bed or plane from the horizontal |
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what is strike? |
a line of zero degrees dip measured as a compass bearing at right angles to dip |
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what is apparent dip? |
apparent inclination of bed or plane |
