Geochimica et Cosmochimica Acta, 2005, V 69, N 20, 15 Oct.

 
Concentration, isotopic composition, and sources of lead in 
Southern Ocean air during 1999/2000, measured at the 
Cape Grim Baseline Air Pollution Station, Tasmania  • 
A.F. Bollhofer, K.J.R. Rosman, A.L. Dick, W. Chisholm, 
G.R. Burton, R.D. Loss and W. Zahorowski
Pages 4747-4757 

A revised isotope fractionation model for dissimilatory
sulfate reduction in sulfate reducing bacteria  • 
Benjamin Brunner and Stefano M. Bernasconi
Pages 4759-4771 

A model for oxygen and sulfur isotope fractionation in 
sulfate during bacterial sulfate reduction processes  • 
Benjamin Brunner, Stefano M. Bernasconi, Jutta Kleikemper
and Martin H. Schroth
Pages 4773-4785 

Impact of highly basic solutions on sorption of 
Cs+ to subsurface sediments from the Hanford site, USA  • 
C.C. Ainsworth, J.M. Zachara, K. Wagnon, S. McKinley, 
C. Liu, S.C. Smith, H.T. Schaef and P.L. Gassman
Pages 4787-4800 

Redox potential measurements and Mossbauer spectrometry
of FeII adsorbed onto FeIII (oxyhydr)oxides  • 
Ewen Silvester, Laurent Charlet, Christophe Tournassat,
Antoine Gehin, Jean-Marc Gren?che and Emmanuelle Liger
Pages 4801-4815 

Hyperfiltration of potassium nitrate through clay
membranes under relatively low-head conditions  • 
Megan Hart and Thomas Michael Whitworth
Pages 4817-4823 

Adsorption of REE(III)-humate complexes onto MnO2: 
Experimental evidence for cerium anomaly and 
lanthanide tetrad effect suppression  • 
Melanie Davranche, Olivier Pourret, Gerard Gruau, 
Aline Dia and Martine Le Coz-Bouhnik
Pages 4825-4835 

Experimental study of neptunyl adsorption 
onto Bacillus subtilis  • 
D. Gorman-Lewis, J.B. Fein, L. Soderholm, 
M.P. Jensen and M.-H. Chiang
Pages 4837-4844 

U-Th chronology and paleoceanographic record in a 
Fe-Mn crust from the NE Atlantic over the last 700 ka  • 
Christelle Claude, Guenter Suhr, Albrecht W. Hofmann
and Andrea Koschinsky
Pages 4845-4854 

Complex speleothem growth processes revealed by
trace element mapping and scanning electron 
microscopy of annual layers  • 
P.C. Treble, John Chappell and J.M.G. Shelley
Pages 4855-4863 

Early diagenesis impact on precise U-series dating 
of deep-sea corals: Example of a 100–200-year old 
Lophelia pertusa sample from the northeast Atlantic  • 
Edwige Pons-Branchu, Claude Hillaire-Marcel, 
Pierre Deschamps, Bassam Ghaleb and Daniel J. Sinclair
Pages 4865-4879 

Trace metal profiles in the varved sediment of an Arctic lake  • 
P.M. Outridge, G.A. Stern, P.B. Hamilton, 
J.B. Percival, R. McNeely and W.L. Lockhart
Pages 4881-4894 

Oxygen isotopic composition and U-Pb discordance in zircon  • 
Amanda L. Booth, Yehoshua Kolodny, C. Page Chamberlain, 
Michael McWilliams, Axel K. Schmitt and Joseph Wooden
Pages 4895-4905 

Relationships among intrinsic properties of ordinary 
chondrites: Oxidation state, bulk chemistry, 
oxygen-isotopic composition, petrologic type, 
and chondrule size  • 
Alan E. Rubin
Pages 4907-4918 

Volcanism in Mare Fecunditatis and Mare Crisium: 
Ar-Ar age studies  • 
Vera A. Fernandes and Ray Burgess
Pages 4919-4934 

69th Annual meeting of the Meteoritical Society 06-11 
August 2006, Zurich, Switzerland  • ANNOUNCEMENT
Page I