Results 211 to 220 of about 23,480 (273)
A honey bee fossil (Hymenoptera, Apidae) from the Late Pliocene to Early Pleistocene Teragi Group, Hyogo Prefecture, Japan: Bridging a gap in <i>Apis</i> evolutionary history. [PDF]
ZookeysTakahashi Y, Takahashi JI.
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Hominin glacial-stage occupation 712,000 to 424,000 years ago at Fordwich Pit, Old Park (Canterbury, UK). [PDF]
Nat Ecol EvolKey A +17 more
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Unveiling Earthquakes: Thermoluminescence Signal Resetting of Laboratory-Produced Fault Gouge
Heydari M +7 more
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Geological Society, London, Special Publications, 1971
Summary Although the radiometric dates bearing closely on terrestrial glaciations must provide the key points in any Pleistocene time-scale, they acquire their full usefulness only within the framework of the climatic sequence obtained from deep-sea ...
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Summary Although the radiometric dates bearing closely on terrestrial glaciations must provide the key points in any Pleistocene time-scale, they acquire their full usefulness only within the framework of the climatic sequence obtained from deep-sea ...
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1990
Except for Quaternary times, the major dating methods for geology and petrology are based on parent/daughter isotope ratios. The most important of these methods for dating igneous and metamorphic rocks and their minerals are the K/Ar (Sect. 6.1.1), Rb/Sr (Sect. 6.1.3), U/Th/Pb (Sect. 6.1.9), and Sm/Nd (Sect. 6.1.6) methods. For example, only with these
Mebus A. Geyh, Helmut Schleicher
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Except for Quaternary times, the major dating methods for geology and petrology are based on parent/daughter isotope ratios. The most important of these methods for dating igneous and metamorphic rocks and their minerals are the K/Ar (Sect. 6.1.1), Rb/Sr (Sect. 6.1.3), U/Th/Pb (Sect. 6.1.9), and Sm/Nd (Sect. 6.1.6) methods. For example, only with these
Mebus A. Geyh, Helmut Schleicher
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Physics Education, 1980
The method of dating rocks and minerals is known as geochronology. Although in principle this term could be applied to estimation of relative ages according to traditional geological observation, it is nowadays usually restricted to the quantitative measurement of geological time using the constant-rate natural process of radioactive decay.
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The method of dating rocks and minerals is known as geochronology. Although in principle this term could be applied to estimation of relative ages according to traditional geological observation, it is nowadays usually restricted to the quantitative measurement of geological time using the constant-rate natural process of radioactive decay.
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Radiometric dating of the Siloam Tunnel, Jerusalem
Nature, 2003The historical credibility of texts from the Bible is often debated when compared with Iron Age archaeological finds (refs. 1, 2 and references therein). Modern scientific methods may, in principle, be used to independently date structures that seem to be mentioned in the biblical text, to evaluate its historical authenticity. In reality, however, this
Amos, Frumkin +2 more
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Radiometric dating of the Jungfrun granite
Geologiska Föreningen i Stockholm Förhandlingar, 1983Abstract The Jungfrun massif consists of a homogeneous alkali-feldspar granite with scattered light aplitic inclusions of unknown genesis. Dating of the Jungfrun massif shows an inconsistent pattern when comparing the K-Ar, Rb-Sr and U-Pb systems. A Rb-Sr whole-rock isochron age of 1386 ± 21 Ma is accepted as representing the time of intrusion while a ...
Göran Åberg +2 more
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Radiometric dating of Late Precambrian times
Geological Society, London, Memoirs, 1985Abstract Between about 1979 and 1981 new radiometric data relevant to the numerical age of the Precambrian-Cambrian boundary became available. Based on this it was suggested in a recent review (Odin et al. 1983) that the numerical age for that boundary was probably much younger than usually accepted, lying
G. S. Odin, N. H. Gale, F. Doré
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