পদ্ধতির তুলনা করুন
নির্বাচিত পদ্ধতিগুলো পাশাপাশি পর্যালোচনা করুন; যে সারিগুলোয় পার্থক্য আছে সেগুলো চিহ্নিত করা হয়।
| ইউরেনিয়াম-থরিয়াম ডেটিং× | ইলেক্ট্রন স্পিন রেজোন্যান্স ডেটিং× | |
|---|---|---|
| ক্ষেত্র | প্রত্নতত্ত্ব | প্রত্নতত্ত্ব |
| পরিবার | Process / pipeline | Process / pipeline |
| উদ্ভবের বছর≠ | 1955 | 1980s |
| প্রবর্তক≠ | Harmon Craig | Michael Aitken |
| ধরন≠ | Decay series dating technique | Paramagnetic resonance dating technique |
| মৌলিক উৎস≠ | 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 ↗ | Grün, R. (1989). Electron spin resonance (ESR) dating. Quaternary International, 1, 65-109. DOI ↗ |
| অপর নাম≠ | U-Th dating, thorium-230 dating | ESR dating, electron paramagnetic resonance dating, EPR dating |
| সম্পর্কিত | 4 | 4 |
| সারসংক্ষেপ≠ | 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. | 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. |
| ScholarGateডেটাসেট ↗ |
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