| 单词 | geological dating |
| 释义 | geological dating (once / 5909656 pages) n WORD FAMILY geological dating n use of chemical analysis to estimate the age of geological specimens Syn|Hypo|Hyper dating potassium-argon dating geological dating that relies on the proportions of radioactive potassium in a rock sample and its decay product, argon carbon dating, carbon-14 dating, radiocarbon datinga chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon-14; believed to be reliable up to 40,000 years rubidium-strontium datinggeological dating based on the proportions of radioactive rubidium into its decay product strontium; radioactive rubidium has a half-life of 47,000,000,000 years chemical analysis, qualitative analysis the act of decomposing a substance into its constituent elements |
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