Browsing by Subject "U-PB"
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Browsing by Subject "U-PB"
Now showing items 1-6 of 6
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(2000)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 ...
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(1996)The W isotopic composition of the bulk silicate Earth (BSE) is chondritic within current analytical uncertainties, indicating that terrestrial core formation commenced more than 50 Myr after the differentiation of the ...
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(2006)Neoarchaean plutonism in the Kuhmo district in eastern Finland, Karelia, includes tonalites, sanukitoids, leucocratic granodiorites, and leucogranites. A U-Pb (SIMS and TIMS) study of zircons and titanites places age ...
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(2006)We report structural, geochemical, and TIMS U-Th-Pb and U-series isotopic data for several samples of precious and common opal, which we tested as potential standards for ion microprobe and LA-ICPMS isotopic studies. The ...
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(2006)The predominantly migmatitic Palaeoproterozoic Uusimaa belt preserves early lower-grade Svecofennian structures in the Orijärvi area in SW Finland. This study aims at explaining the deformational history responsible for ...
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Эволюция Центрально-Индийской тектонической зоны: геохимические и изотопно-геохронологические данные (Федеральное государственное бюджетное образовательное учреждение высшего образования «Мурманский государственный технический университет», 2015)В рамках Российско-индийских совместных научных проектов проведено геохимическое и геохронологическое изучение гранитоидных пород вкрест простирания Центрально-Индийской тектонической зоны. Геохронологические данные позволяют ...
Now showing items 1-6 of 6