Relative age dating geology

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Relative dating attempts to determine the relative order of past events, without necessarily determining their absolute age.Before radiometric dating, which provided a means of absolute dating, archaeologists and geologists were for the most part limited to the use of relative dating techniques to determine the geological events.

The chemical composition of Earth's crust has similarities with other stony planets, with silicate-rich rocks being dominant in most locations on the surface.Despite seeming like a relatively stable place, the Earth's surface has changed dramatically over the past 4.6 billion years.Mountains have been built and eroded, continents and oceans have moved great distances, and the Earth has fluctuated from being extremely cold and almost completely covered with ice to being very warm and ice-free.There are two basic approaches: relative age dating, and absolute age dating.Here is an easy-to understand analogy for your students: relative age dating is like saying that your grandfather is older than you.

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