Carbon 14 dating summary
The seriation of stratified deposits permits archaeologists to assess the relative age of particular styles.This information may then be used to surmise the relative age of unstratified deposits (e.g., surface sites).In geology, a master stratigraphic sequence for a particular region is built up by correlating the strata from different locations with one another.As new locations are investigated, the geologist attempts to fit the new profiles into the master sequence of geological strata for that region.
Stratigraphic dating is accomplished by interpreting the significance of geological or archaeological strata, or layers.Since 1950 the physical sciences contributed a number of absolute dating techniques that have had a revolutionary effect on archaeology and geology.These techniques are based upon the measurement of radioactive processes (radiocarbon; potassium-argon, uranium-lead, uranium-thorium, thorium-lead, etc.; fission track; thermoluminescence; optically stimulated luminescence; and electron-spin resonance), chemical processes (amino-acid racemization and obsidian hydration), and the magnetic properties of igneous material, baked clay, and sedimentary deposits (paleomagnetism).Technological changes can be used for relative dating of archaeological material.The three-age system devised by the Danish archaeologist Christian Thomsen in the 1830s made use of technological criteria.
It is confusing when the maximum date for Carbon 14 is listed as 60,000 years and 80,000 years in the same article (Chapter 4 Dating Methods by Roger Patterson and the reference article summary 4.2 by Riddle.) and as 50,000 years in another (The Answers Book) as well as 95,000 years in the Creation College lecture by Dr. This is why there is the disparity in the quoted limits to radiocarbon dating, as highlighted by this inquirer.