14.5: Applying the Geologic Principles to a Geologic History Diagram

Applying the Geologic Principles to a Geologic History Diagram

Using these geologic principles, we can examine a series of rock layers and determine their relative ages and establish an order or series of events that must have occurred. Common events that are often recognized can include 1) Deposition of sedimentary layers, 2) Tilting or folding rocks, 3) Uplift and erosion of rocks, 4) Intrusion of liquid magma, and 5) Fracturing or breaking of rock (faulting). Figures 14.14 and 14.15 show how to piece together a series of geologic events using relative dating.

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