Browsing by Author "Nagler T.F."
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Browsing by Author "Nagler T.F."
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Nagler T.F.; Villa I.M. (2000)This paper presents combined 39Ar-40Ar and K-Ca analyses on gem quality, K-rich silicates: a muscovite and a sanidine, both from pegmatites. We attempted to directly determine the 40K branching ratio by comparing the ...
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Gussone N.; Eisenhauer A.; Heuser A.; Dietzel M.; Bock B.; Bohm F.; Spero H.J.; Lea D.W.; Bijma J.; Nagler T.F. (2003)The calcium isotope ratios (δ44Ca = [(44Ca/40Ca)sample/(44Ca/40Ca)standard -1] . 1000) of Orbulina universa and of inorganically precipitated aragonite are positively correlated to temperature. The slopes of 0.019 and ...
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Frei R.; Nagler T.F.; Schonberg R.; Kramers J.D. (1998)A combined Re-Os, Sm-Nd, U-Pb, and stepwise Pb leaching (PbSL) isotope study of hydrothermal (Mo-W)-bearing minerals and base metal sulfides from two adjacent shear zone hosted gold deposits (RAN, Kimberley) in the ...
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Frei R.; Villa I.M.; Nagler T.F.; Kramers J.D.; Przybylowicz W.J.; Prozesky V.M.; Hofmann B.A.; Kamber B.S. (1997)Stepwise Pb-Pb leaching (PbSL) has been successfully used to date rock-forming silicates directly linked to metamorphic reactions defining a PT path. The two features of PbSL are an increase of precision and a control on ...
Now showing items 1-4 of 4