Argon dating wiki
Characteristics A small piece of rapidly melting solid argon Argon has approximately the same solubility in water as oxygen and is 2. Argon is colorless, odorless, nonflammable and nontoxic as a solid, liquid or gas. Although argon is a noble gas , it can form some compounds under various extreme conditions. Theoretical calculation predicts several more argon compounds that should be stable  but have not yet been synthesized.
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Argon - Wikipedia
Departures from this assumption are quite common, particularly in areas of complex geological history, but such departures can provide useful information that is of value in elucidating thermal histories. A deficiency of 40 Ar in a sample of a known age can indicate a full or partial melt in the thermal history of the area. Reliability in the dating of a geological feature is increased by sampling disparate areas which have been subjected to slightly different thermal histories. Ar—Ar dating is a similar technique which compares isotopic ratios from the same portion of the sample to avoid this problem. Applications[ edit ] Due to the long half-life , the technique is most applicable for dating minerals and rocks more than , years old.
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