| 词汇 | radiometric-dating |
| 释义 | BETA Examples of radiometric datingradiometric dating isn’t in the Cambridge Dictionary yet. You can help! A temporal framework for pollen data is provided by radiometricdating or a stratigraphic context for the pollen-bearing sediments. The pitfalls of not separating the finest and purest phases for radiometricdating are emphasized: inherited material will give 'non-metamorphic' ages. Schrire uses radiometricdating methods and other techniques to compartmentalize and talk about the past. Further refinement of the formation's age using radiometricdating of sanidine crystals has resulted in an age of 34 million years old. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Many geologists felt these new discoveries made radiometricdating so complicated as to be worthless. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The advent of radiometricdating changed the understanding of geologic time. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Enough material has been recovered to facilitate radiometricdating, as well as identifying the peoples who once inhabited the site. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Radiometricdating ranged mostly from 450,000 to 320,000 years ago, although several pieces strayed lower; this indicated a period of eruptive history at the time. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. He leaned towards the idea of old earth creationism but questioned radiometricdating. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Such immobilised elements, in particular carbon, are valuable in that they permit radiometricdating in reconstructing past vegetation patterns. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The constant rates of decay in these decay series makes the comparison of the ratios of parent to daughter elements useful in radiometricdating. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Radiometricdating has produced a range of estimates, dating various carvings to between 300 and 3000 years of age. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The mass spectrometer was invented in the 1940s and began to be used in radiometricdating in the 1950s. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One example is that of dating objects, using observable evidence such as tree rings for dendrochronology or carbon-14 for radiometricdating. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Radiometricdating is also used to date archaeological materials, including ancient artifacts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is these ash beds that allow precise radiometricdating as well. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When used in concert with radiometricdating, it allows the resolution of timescales to a high degree of accuracy. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. After the discovery of radioactivity, radiometricdating methods were developed, starting in the 20th century. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This technique is also widely used in the field of radiometricdating, in which it is used to analyze relative abundance of different isotopes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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