How does the law of crosscutting relationships help determine the areas history?
The Law of Superposition states that strata that are younger will be deposited on top of strata that are older, normally. The Law of Cross-Cutting Relationships provides another way of establishing relative age. The Law states that where structure A cuts structure B, structure B (the one being cut) is older than structure A (the one doing the cutting). ChaCha on!
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Sometimes magma pushes, or intrudes, into cracks in existing rocks. When the melted rock cools and solidifies, the resulting feature is called an igneous intrusion. More? ChaCha for now!
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