How relative positions of rocks allow scientists to compare their ages.
Discusses how radiometric dating can provide an absolute age (date in number of years) to complement the relative age relationships provided by the principle of superposition.
Reviews how the relative positions of rocks allow scientists to compare their ages.
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The Wave, on the Arizona-Utah border- artfully reflects a complicated geological history.
Nicholas Steno made many contributions to natural science, particularly to stratigraphy and to the idea of uniformitarianism.