07-20-2017, 01:26 AM
Optically Stimulated Luminescence (OSL) dating determines when grains of sand were last exposed to sunlight. Radiocarbon dating requires organic material (that often doesn't survive) and is not very reliable once you get past 45,000 years.
I'm not really familiar with the technology but I know that often only a couple of grains of sand in a 100gm sample will give reliable results.
I'm not really familiar with the technology but I know that often only a couple of grains of sand in a 100gm sample will give reliable results.
“Why don’t you knock it off with them negative waves? Why don’t you dig how beautiful it is out here? Why don’t you say something righteous and hopeful for a change?” Oddball