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Sm-nd dating method

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Three geologists have reported what they called the first "successful" direct dating of dinosaur bone. Will this new radioisotope dating or radiodating technique solve the problems that plagued older dating methods? If history is anything to go by, then the answer is no. The process generally used to date a fossil is circuitous and subject to differing interpretations. It has involved tracing the related sedimentary rock layer horizontally from the place where the fossil in question was found to a place where it is underlain or overlain or both by igneous rock. Igneous rock layers can supposedly be directly dated, so sedimentary layers sandwiched between them are interpreted to have been deposited in between the "ages" assigned to the igneous rocks.
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Sm–Nd Dating

Sm-nd dating method
Sm-nd dating method
Sm-nd dating method
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Radiometric Dating

Using the various types of radioisotope decay as clocks does not produce consistent results, nor are those results verifiable by observational evidence. If these methods do not properly date rocks of known ages—some less than a century old—how can we trust them to date rocks of unknown ages? Last month we discussed dating methods using rare-earth elements REEs , a group of seventeen metallic elements—i. The Sm- Nd model has a problem the previous models we have discussed do not have—i. Furthermore, the index isotope Nd alpha decays to Ce with a half-life of approximately 2. This introduces a time-dependent concentration into a time-independent linear equation.
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New Direct Fossil Dating Technique Promises to Fail

Mihai N. Ducea , Jibamitra Ganguly , Erin J. Rosenberg, P.
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