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Hence, the ratio of the two isotopes changes over time.
Scientists use radiocarbon dating, a radiometric dating analysis of carbon isotopes, to date objects that are 60,000 years old or less.
This technique provides very accurate age estimates of relatively young objects.
Living plants exchange their carbon with the carbon in the air.
The air contains mostly carbon-12, the most common carbon isotope.
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In some circumstances however, a flow may encase a small amount of plant material before it is entirely incinerated.
Starved of the oxygen required for combustion, these bits of organic material are preserved inside the cooling lava.
This technique, also called radiometric dating, measures the stage of decay of specific radioactive isotopes contained in the object.
Depending on which isotope is analyzed, objects from several billion years old to just a few thousand years old can be accurately dated.
When geologists find these artifacts, they can use them to date the lava flows that contain them.Tags: Adult Dating, affair dating, sex dating