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Relative-Dating Principles
A set of techniques used in geology to determine the chronological order of events by analyzing rock layers and structures without determining their exact age.
Carbon-14 Ages
An age estimate of an organic material based on the measurement of the radioactivity of its carbon-14 content.
Granite Intrusion
The penetration of molten granite into pre-existing rocks in the Earth's crust, cooling and solidifying below the surface.
Cross-Cutting Relations
A geological principle stating that rocks disrupted or penetrated by an igneous intrusion or fault are older than the intrusion or fault itself.