Osl dating method ryan seacrest dating 2016
All sediments and soils contain trace amounts of radioactive isotopes of elements such as potassium, uranium, thorium, and rubidium.
These slowly decay over time and the ionizing radiation they produce is absorbed by mineral grains in the sediments such as quartz and potassium feldspar.
The OSL (optically stimulated luminescence) dating method exploits dosimetric properties of grains of minerals naturally occurring in sediments and man-made materials.
Radiocarbon dating dates the decay of Carbon-14 within organic matter.
Older marine sediments can be dated using palaeo-magnetism.
This is because the earth’s magnetic field varies in strength and polarity direction.
It includes techniques such as optically stimulated luminescence (OSL), infrared stimulated luminescence (IRSL), and thermoluminescence dating (TL).
"Optical dating" typically refers to OSL and IRSL, but not TL.