Categorie: Radioactive Dating


7 Three Dating Planetary Surfaces Astronomy 2e

Tens to tons of of 1000’s of years earlier than a serious volcanic eruption, magma builds up beneath the floor of the Earth. In the magma, crystals of zirconium silicate (called zircons), as well as other crystals, form. These zircon crystals are tiny — just a tenth of a millimeter long — however they...