Сравнение на методи
Прегледайте избраните методи един до друг; редовете с разлики са откроени.
| Датиране чрез електронен спинов резонанс× | Датиране чрез уран-торий× | |
|---|---|---|
| Област | Археология | Археология |
| Семейство | Process / pipeline | Process / pipeline |
| Година на възникване≠ | 1980s | 1955 |
| Създател≠ | Michael Aitken | Harmon Craig |
| Тип≠ | Paramagnetic resonance dating technique | Decay series dating technique |
| Основополагащ източник≠ | 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 ↗ |
| Други названия≠ | ESR dating, electron paramagnetic resonance dating, EPR dating | U-Th dating, thorium-230 dating |
| Свързани | 4 | 4 |
| Резюме≠ | 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. |
| ScholarGateНабор от данни ↗ |
|
|