Dating method for volcanic ash

The stability of the Earth is not at all what we think it is.

Today's knowledge of fossil ages comes primarily from radiometric dating, also known as radioactive dating.Usually, atoms have an equal number of protons and neutrons.If there are too many or too few neutrons, the atom is unstable, and it sheds particles until its nucleus reaches a stable state.Along the seafloor features that supported the sea-floor spreading hypothesis were: mid-oceanic ridges, deep sea trenches, island arcs, geomagnetic patterns, and fault patterns....[tags: geographic evidence, theory of continental drift] - ...When paleontologist Mary Schweitzer found soft tissue in a Tyrannosaurus rex fossil, her discovery raised an obvious question -- how the tissue could have survived so long?

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