Petrology, 2009, V 17, N 1.

 Geothermochronology Based on Noble Gases: I. Stability 
 of the U-Xe Isotopic System in Nonmetamict Zircons 
 Yu. A. Shukolyukov, M. M. Fugzan, I. P. Paderin, 
 S. A. Sergeev, and D. P. Krylov 
 p. 1  

 The Zr/Hf Ratio as a Fractionation Indicator of Rare-Metal Granites 
 G. P. Zaraisky, A. M. Aksyuk, V. N. Devyatova, 
 O. V. Udoratina, and V. Yu. Chevychelov 
 p. 25  

 Trace Elements in Minerals as Indicators of the Evolution 
 of Alkaline Ultrabasic Dike Series: LA-ICP-MS Data for the 
 Magmatic Provinces of Northeastern Fennoscandia and Germany 
 A. A. Arzamastsev, L. V. Arzamastseva, F. Bea, and P. Montero 
 p. 46  

 Age of Carbonatite Magmatism in Transbaikalia 
 G. S. Ripp, A. G. Doroshkevick, and V. F. Posokhov 
 p. 73  

 Development of a Heterogeneity in the Lithosphere:
 Geochemical Evidence 
 Yu. A. Balashov 
 p. 90