Radioactive age dating definition
The reason that I trust the accuracy of the age that we have determined for the earth (~4.56 billion years) is that we have been able to obtain a very similar result using many different isotopic systems.Most estimates of the age of the earth come from dating meteorites that have fallen to Earth (because we think that they formed in our solar nebula very close to the time that the earth formed).Though still heavily used, relative dating is now augmented by several modern dating techniques.Radiocarbon dating involves determining the age of an ancient fossil or specimen by measuring its carbon-14 content.It is commonly used in earth science to determine the age of rock formations or features or to figure out how fast geologic processes take place (for example, how fast marine terraces on Santa Cruz island are being uplifted).Radiometric dating relies on the principle of radioactive decay.
Green plants absorb the carbon dioxide, so the population of carbon-14 molecules is continually replenished until the plant dies. This is an enormous branch of geochemistry called Geochronology. It is an accurate way to date specific geologic events.The process of radiogenic dating is usually done using some sort of mass spectrometer.A mass spectrometer is an instrument that separates atoms based on their mass.