the basıc concept ıs stratigraphy: the earliest deposition is at thee top while the oldest is t the bottom. when you excavate you actually can see the layers of deposition as actual dating process is far beyond the scope of this venue but rather entails several graduate school courses in geochronolgy and Chronostratigraphy an excellent over view of dating in geology paleontology and archaeology may be seen at any particular excavation one must determine the key artifact, fossil and geological features, crating a relative chronology.
In the process the paper refutes a number of misconceptions prevalent among [new earthist creationist Christians***[n.b. This paper is available on the web via the American Scientific Affiliation and related sites to promote greater understanding and wisdom on this issue, particularly within the Christian community.
Absolute dating is the process of determining an age on a specified chronology in archaeology and geology.
Cosmic radiation entering the earth’s atmosphere produces carbon-14, and plants take in carbon-14 as they fix carbon dioxide.
Carbon-14 moves up the food chain as animals eat plants and as predators eat other animals. It takes 5,730 years for half the carbon-14 to change to nitrogen; this is the half-life of carbon-14.
paleomagnetism and isotope ratios along with biostratigraphy identify the strata of the local geology and determine their relative chronology.
the verification of local geochronology is crucial to the accurate dating of any one particular feature or assembly.The technique often cannot pinpoint the date of an archeological site better than historic records, but is highly effective for precise dates when calibrated with other dating techniques such as tree-ring dating.An additional problem with carbon-14 dates from archeological sites is known as the "old wood" problem.There are over forty such techniques, each using a different radioactive element or a different way of measuring them.It has become increasingly clear that these radiometric dating techniques agree with each other and as a whole, present a coherent picture in which the Earth was created a very long time ago.Dating is a science and discipline which requires extensive training.