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The principle of cross-cutting states that any geologic feature that crosses other layers or rock must be younger then the material it cuts across.
Using this principle any fault or igneous intrusion must be younger than all material it or layers it crosses.
Radiocarbon dating provides additional clues necessary for absolute dating.Relative dating utilizes six fundamental principles to determine the relative age of a formation or event.The first principle is the Principle of Superposition which states that in an undisturbed succession of sedimentary rock, the oldest layers are on the bottom.Much like the principle of cross-cutting, the Principle of Inclusions relatively dates objects based on their placement within other earth materials.Once a rock is lithified no other material can be incorporated within its internal structure.
Absolute dating is a method of determining the specific date of a paleontological or archaeological artifact or location based on a specific time scale or calendar.