k-ar age dating
41Three-age system — The three age system refers to the periodization of human prehistory into three consecutive time periods, named for their respective predominant tool making technologies: * The Stone Age * The Bronze Age * The Iron AgeThe system is most apt in… …
42Uranium-thorium dating — Uranium thorium dating, also called thorium 230 dating, uranium series disequilibrium dating or uranium series dating, is a radiometric dating technique commonly used to determine the age of carbonate materials such as speleothem or coral [ [http …
43Radiocarbon 14 dating of the Turin Shroud — Radiocarbon dating of the Turin Shroud was the most famous scientific study performed on the artifact. The radiocarbon dating was carried out in 1988 and dated the cloth is to between 1260 and 1390 C.E., compatible with the first recorded mention …
44Surface exposure dating — is a collection of geochronological techniques for estimating the length of time that a rock has been exposed at or near Earth s surface. Surface exposure dating is used to date glacial advances and retreats, erosion history, lava flows,… …
45Absolute dating — is the process of determining a specific date for an archaeological or palaeontological site or artifact. Some archaeologists prefer the terms chronometric or calendar dating, as use of the word absolute implies a certainty and precision that is… …
46Mobile dating — Relationships Types …
47potassium-argon dating — /peuh tas ee euhm ahr gon/, Geol. a method for estimating the age of a mineral or rock, based on measurement of the rate of decay of radioactive potassium into argon. [1965 70] * * * Method for determining the age of igneous rocks based on the… …
48Fission track dating — is a radiometric dating technique based on analyses of the damage trails, or tracks, left by fission fragments in certain uranium bearing minerals and glasses. Uranium 238 undergoes spontaneous fission decay at a known rate. The fragments emitted …
49carbon dating — noun a chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon 14; believed to be reliable up to 40,000 years • Syn: ↑radiocarbon dating, ↑carbon 14 dating • Hypernyms: ↑dating,… …
50Uranium-lead dating — Uranium lead is one of the oldest and most refined radiometric dating schemes, with a routine age range of about 1 million years to over 4.5 billion years, and with routine precisions in the 0.1 1 percent range. [Parrish, Randall R.; Noble,… …
