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Unformatted text preview: which they form is the same Superpostion-youngest layer is on top, oldest layer is on the bottom Original horizontality-sedimentary rocks are deposited horizontally, a shift in the rock causes them to shift vertically Lateral continuity- sedimentary rocks were once connected but due to erosion valleys and canyons formed Crosscutting relationships- intrusions of igneous rock cut across country rock already there C is the oldest, Y is youngest...
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- Fall '08