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| Phương pháp định tuổi bằng cộng hưởng spin điện tử× | Niên đại địa từ khảo cổ× | |
|---|---|---|
| Lĩnh vực | Khảo cổ học | Khảo cổ học |
| Họ | Process / pipeline | Process / pipeline |
| Năm ra đời≠ | 1980s | 1968 |
| Người khởi xướng≠ | Michael Aitken | Robert Coe |
| Loại≠ | Paramagnetic resonance dating technique | Magnetic reference frame dating |
| Công trình gốc≠ | Grün, R. (1989). Electron spin resonance (ESR) dating. Quaternary International, 1, 65-109. DOI ↗ | Coe, R. S. (1968). The determination of paleointensities and neomagnetic effects on pottery. Journal of Geophysical Research, 73(12), 3247-3262. link ↗ |
| Tên gọi khác≠ | ESR dating, electron paramagnetic resonance dating, EPR dating | paleomagnetic dating, magnetic declination dating |
| Liên quan≠ | 4 | 3 |
| Tóm tắt≠ | 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. | Archaeomagnetic dating uses changes in Earth's magnetic field intensity and direction recorded in fired clay artifacts to determine age. Pioneered by Robert Coe in the 1960s, the method measures the magnetization of pottery and baked clay features, comparing measurements to a master curve of geomagnetic variation through time. Archaeomagnetic dating is most effective for materials dated to the last 10,000 years and is particularly powerful in arid regions where clay artifacts are well-preserved. |
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