Results 181 to 190 of about 157,575 (214)
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Discordant Zircon U–Pb Ages from the Uganda Basement
Nature Physical Science, 1971FOR several years there has been controversy about the ages of the Uganda basement gneisses. Potassium–argon ages of micas from the basement rocks1 range from 600 to 415 m.y. whereas results for the apparently unconformably overlying Karagwe–Ankolean and Buganda–Toro sedimentary systems2,3 to the south (around the north end of Lake Victoria) suggest an
P. J. LEGGO, M. AFTALION, R. T. PIDGEON
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U-PB EMPLACEMENT AGES OF KANSAS LAMPROITES AND KIMBERLITES
Geological Society of America Abstracts with Programs, 2023Isabella Lupini +3 more
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Decay constant errors in U–Pb concordia-intercept ages
Chemical Geology, 2000Abstract Although almost universally ignored, the effect of errors in the uranium decay-constants on U–Pb concordia-intercept ages (and Pb–Pb ages) are significant, and not equivalent to those of simple U–Pb ages. Equations are derived for concordia-intercept age-errors that take decay-constant errors into account.
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Microstructures and U-Pb ages of phosphates in Apollo 14 breccias
Goldschmidt2023 abstracts, 2023Fiona Thiessen +3 more
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UNMIXING DETRITAL ZIRCON U-PB AGE DISTRIBUTIONS
Geological Society of America Abstracts with Programs, 2017Kurt E. Sundell, Joel E. Saylor
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Distinct biological ages of organs and systems identified from a multi-omics study
Cell Reports, 2022Chao Nie, Yanfang Shi, Jing-Dong J Han
exaly
DETERMINING THE U-PB EMPLACEMENT AGE OF LAMPROITES IN SOUTHEASTERN KANSAS
Geological Society of America Abstracts with Programs, 2022Isabella Lupini +3 more
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