Determine age fossils carbon dating

Layers that cut across other layers are younger than the layers they cut through (principle of cross-cutting relationships).

In the Grand Canyon, the layers of strata are nearly horizontal.Second, it is possible to determine the numerical age for fossils or earth materials.Numerical ages estimate the date of a geological event and can sometimes reveal quite precisely when a fossil species existed in time.These changes typically occur so slowly that they are barely detectable over the span of a human life, yet even at this instant, the Earth's surface is moving and changing.As these changes have occurred, organisms have evolved, and remnants of some have been preserved as fossils.