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7 Cards in this Set
- Front
- Back
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scenerio: a core sample is drilled in locatio A, it contains 10 layers of sedimentary rock, another in location B, 8 layers were found. Two layers were missing. What is this?
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unconformity
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the rock layer near the top is younger than the one on the bottom. What is this?
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the law of superposition
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define unconformity
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a period where deposition stops and isremoved by erosion, then deposition rsumes.
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define nonconformity
angular unconformity disconformity |
nonconformity- an upward intrusion
angular unconformiy- when the layers are tilted disconformity- a downward intrusion |
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what is the principle of uniformitarianism?
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the current geologic process depends and happened in the past
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what is realitive and absolute age.
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realitive age- older or younger
absolute age- an acutal number |
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what is continental drift
plate tectonics? |
the contients move
the crust is made of plates that move |
