قارن الطرق
راجع الطرق التي اخترتها جنبًا إلى جنب؛ الصفوف المختلفة مميَّزة.
| تأريخ الرنين المغزلي الإلكتروني× | تأريخ اليورانيوم-الثوريوم× | |
|---|---|---|
| المجال | علم الآثار | علم الآثار |
| العائلة | Process / pipeline | Process / pipeline |
| سنة النشأة≠ | 1980s | 1955 |
| صاحب الطريقة≠ | Michael Aitken | Harmon Craig |
| النوع≠ | Paramagnetic resonance dating technique | Decay series dating technique |
| المصدر التأسيسي≠ | Grün, R. (1989). Electron spin resonance (ESR) dating. Quaternary International, 1, 65-109. DOI ↗ | Edwards, R. L., Chen, J. H., & Wasserburg, G. J. (1987). U-238, U-234 and Th-230 in seawater. Geochimica et Cosmochimica Acta, 51(5), 1213-1225. link ↗ |
| الأسماء البديلة≠ | ESR dating, electron paramagnetic resonance dating, EPR dating | U-Th dating, thorium-230 dating |
| ذات صلة | 4 | 4 |
| الملخص≠ | Electron spin resonance (ESR) dating is a chronometric method that determines the age of bones, teeth, mollusk shells, and sediments by measuring accumulated radiation-induced unpaired electrons. Developed by Michael Aitken in the 1980s, ESR detects free radicals trapped in mineral crystal structures. Unlike luminescence techniques that require heating or light exposure, ESR directly measures paramagnetic defects, making it particularly valuable for dating dental and skeletal remains that are inaccessible to other methods. | Uranium-thorium (U-Th) dating is a chronometric method that determines the age of carbonates, shells, bones, and coral by measuring the ratio of uranium isotopes to thorium-230. First applied by Harmon Craig in the 1950s, it exploits the natural radioactive decay chain of uranium. U-Th dating is particularly valuable for dating materials from 500 to 500,000 years old, filling a crucial chronological gap between radiocarbon and potassium-argon dating. |
| ScholarGateمجموعة البيانات ↗ |
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