About **Uranium**-Lead **Dating** - ThoughtCo This que is not restricted to bones; it can also be **used** on cloth, wood and plant fibers. Feb 28, 2017. In a 704-million-year-old rock, 235U is at its half-life and there will be. With *238U* the Pb/U ratio grows much more slowly with age, but the idea is the same. Other minerals sometimes *used* for *uranium*-lead *dating* include.

Carbon-14, Radiometric **Dating** - CSI - Creation Studies Institute These artifacts have gone through many carbon-14 half-lives, and the amount of carbon-14 remaining in them is miniscule and very difficult to detect. Carbon *dating* is *used* to determine the age of biological artifacts. Other methods scientists use include counting rock layers and tree rings. *Uranium*-235; half-life = 704 million years; *Uranium*-*238*; half-life = 4.5 billion years; Thorium-232;.

More Info on Radioactivity, Time and Age As stated previously, carbon *dating* cannot be *used* on artifacts over about 50,000 years old. Most of these elements occur in neous *rocks*. *Uranium*-*238* is the most commonly *used* radioactive isotope in this *dating* process. Its half-life is 4.5 billion years.

*URANIUM* A RADIOACTIVE CLOCK Carbon *dating* is *used* to determine the age of biological artifacts up to 50,000 years old. Apr 2, 2008. In the oldest **uranium**-bearing **rocks**, the ratio of U-**238** to Pb-206 is about. At least two other radioactive clocks are **used** for **dating** geological.

Radioactive *Dating* - Carbon, Method, *Uranium*, and Age - JRank. Scientists attempt to check the accuracy of carbon **dating** by comparing carbon **dating** data to data from other **dating** methods. Boltwood explained that by studying a rock containing **uranium**-**238**, one can determine. Radioactive **dating** is also **used** to study the effects of pollution on an.

**Uranium** **238** Decay Series Carbon-14 cannot be **used** to date biological artifacts of organisms that did not get their carbon dioxide from the air. Be Wow-ed by Speedy Results! Search for **Uranium** **238** **Dating**.

*Uranium*–lead *dating* - pedia This restriction extends to animals that consume seafood in their diet. *Uranium*–lead *dating*, abbreviated U–Pb *dating*, is one of the oldest and most refined of the radiometric *dating* schemes. It can be *used* to date *rocks* that formed from about 1 million years to over 4.5. The existence of two 'parallel' *uranium*-lead decay routes *238U* to 206Pb and 235U to 207Pb leads to multiple *dating*.

Geologic Time Radiometric Time Scale The question should be whether or not carbon-14 can be *used* to date any artifacts at all? There are a few categories of artifacts that can be dated using carbon-14; however, they cannot be more 50,000 years old. The discovery of the natural radioactive decay of *uranium* in 1896 by. Precise *dating* has been accomplished since 1950. The parent isotopes and corresponding daughter products most commonly *used* to determine the ages of ancient *rocks* are listed below. *Uranium*-*238*, Lead-206, 4.5 billion years.