Browsing ELibrary by Author "Nagler T.F."

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IN PURSUIT OF THE 40K BRANCHING RATIOS: K-CA AND 39AR-40AR DATING OF GEM SILICATES

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 ...
MODEL FOR KINETIC EFFECTS ON CALCIUM ISOTOPE FRACTIONATION (δ44CA) IN INORGANIC ARAGONITE AND CULTURED PLANKTONIC FORAMINIFERA

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 ...
RE-OS, SM-ND, U-PB, AND STEPWISE LEAD LEACHING ISOTOPE SYSTEMATICS IN SHEAR-ZONE HOSTED GOLD MINERALIZATION: GENETIC TRACING AND AGE CONSTRAINTS OF CRUSTAL HYDROTHERMAL ACTIVITY

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 ...
SINGLE MINERAL DATING BY THE PB-PB STEP-LEACHING METHOD: ASSESSING THE MECHANISMS

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 ...

Browsing ELibrary by Author "Nagler T.F."

Browsing ELibrary by Author "Nagler T.F."

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