Several dating methods exist, depending on different criteria and techniques, and some very well known examples of disciplines using such techniques are, for example, history, archaeology, geology, paleontology, astronomy and even forensic science, since in the latter it is sometimes necessary to investigate the moment in the past in which the death of a cadaver occurred.
Relative dating methods are unable to determine the absolute age of an object or event, but can determine the impossibility of a particular event happening before or after another event of which the absolute date is well known.
Radiometric dating utilizes the decay rates of certain radioactive atoms to date rocks or artifacts.
Uniformitarian geologists consider this form of dating strong evidence that the Earth is billions of years old.
For example, in the The decay constant has dimensions of reciprocal seconds.
In the special case in which parent and daughter atoms are present in equal quantities, the age of the specimen is the half-life of the parent isotope: The first assumption, that the amount of the daughter isotope in the original rock is known, is the weakest assumption.
A detailed survey of the following dating methods in actual use: K-Ar, Ar-Ar, Fission track, Rb-Sr, U-Pb, Pb-Pb, Sm-Nd, Re-Os, Lu-Hf, La-Ce, etc.
Addresses and refutes the common defensive statements used by proponents of the dating methods.
Pigliucci Bio Science, 2000, 51, 411-4 AND FINALLY - About Jonathan Wells - In His Own Words!Despite very impressive and powerful measurement and characterization tools, physical and chemical analysis methods, the dating of rocks by using radioactive elements depends on very basic assumptions.The significance and relevance of these assumptions have not been demonstrated. Wells Writes About Evolution is Wrong [HTML] [PDF] - A. Gishlick Icons of Anti Evolution: Rebutals by New Mexicans for Science & Reason Legitimate Questions of Evolution, or Stealth Creationism? We will deal with carbon dating first and then with the other dating methods.