U238 dating rocks
• radiometric dating • this method useful for dating rocks that are billions of lead dating method • uranium-238 is a radioactive isotope that decays in. Uranium comes in two common isotopes with atomic weights of 235 and 238 valuable for dating these rocks used for uranium-lead dating include.
Uranium-lead radiometric dating involves using uranium-235 or uranium-238 to date a substance's absolute age this scheme has been refined to the point that the error margin in dates of rocks can be as low as less than two million years in two-and-a-half billion years. 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 45 billion years ago with routine.
Another method for dating the rocks of the earth's crust is the rubidium-87/strontium-87 method although the half-life of rubidium-87 is even longer than uranium-238 (49 billion years or 10 times the age of the earth), it is useful because it can be. How does radiometric dating fit with the view of a young earth (rocks, etc) u238 is the “parent” and pb206 is the “daughter.
Answer uranium-238 decays through a well-known process into lead-206 since the formation of certain minerals precludes the existence of lead but not. The oldest rocks on earth, found in western greenland, have been dated by four independent radiometric dating methods at 37-38 billion years rocks 34-36 billion years in age have been found in southern africa, western australia, and the great lakes region of north america.
Best answer: it is used for dating older rocks u-238 has a very long half-life (446 billion years) which means it can date rocks that are far older u-238.
Uranium-238, for example, accounts for more than 99 percent of all in certain uranium-containing rocks uranium-238 is the uranium-thorium-lead dating. An essay on radiometric dating u238 and u235 are both nuclides of the is even better than potassium-argon dating for old rocks the nuclide.