Explain how relative dating works updating computer skills

Posted by / 09-May-2020 20:30

Explain how relative dating works

This newer method converts a stable form of potassium (potassium-39) into argon-39.Measuring the proportions of argon-39 and argon-40 within a sample allows the age of the sample to be determined.Sedimentary rocks are rarely useful for dating because they are made up of bits of older rocks.Uranium is present in many different rocks and minerals, usually in the form of uranium-238.Argon is gas that gradually builds up within rocks from the decay of radioactive potassium.It is initially formed in the molten rock that lies beneath the Earth’s crust.This form of uranium usually decays into a stable lead isotope but the uranium atoms can also split – a process known as fission.During this process the pieces of the atom move apart at high speed, causing damage to the rock or mineral.

These include radiometric dating of volcanic layers above or below the fossils or by comparisons to similar rocks and fossils of known ages.The age of volcanic rocks and ash can be determined by measuring the proportions of argon (in the form of argon-40) and radioactive potassium within them.Each volcanic eruption produces a new deposit of ash and rock.This relatively new technique was developed in order to achieve more accurate dates than those obtained from the potassium-argon method.The older method required two samples for dating and could produce imprecise dates if the argon was not fully extracted.

explain how relative dating works-41explain how relative dating works-11explain how relative dating works-40

One thought on “explain how relative dating works”