Time dating techniques
Before this, archaeologists and scientists relied on deductive dating methods, such as comparing rock strata formations in different regions.
Chronometric dating has advanced since the 1970s, allowing far more accurate dating of specimens.
This will always be true due to the finite limits of measuring equipment.
This does not mean that radiometric dates or any other scientific measurements are unreliable.billion years, the chronometric age of a sample can be calculated.
Paleoanthropologists and archaeologists must always be aware of possible radiocarbon sample contamination that could result in inaccurate dates.
Such contamination can occur if a sample is exposed to carbon compounds in exhaust gasses produced by.
rock, soil, and clay produce constant low amounts of background ionizing radiation.
These energy charged electrons progressively accumulate over time.When a sample is heated to high temperatures in a laboratory, the trapped electrons are released and return to their normal positions in their atoms.This causes them to give off their stored energy in the form of light impulses (photons). A similar effect can be brought about by stimulating the sample with infrared light.This dating method can be used with samples that are as young as a few decades to as old as the earth and beyond.However, paleoanthropologists rarely use it to date sites more than several million years old.