Geochimica et Cosmochimica Acta, 2005, V 69, N 17, 1 Sept.

 
Adsorption as a cause for iron isotope fractionation
in reduced groundwater  • 
Nadya Teutsch, Urs von Gunten, Don Porcelli, 
Olaf A. Cirpka and Alex N. Halliday
Pages 4175-4185 

Experimental measurements and modeling of sorption 
competition on montmorillonite  • 
Michael H. Bradbury and Bart Baeyens
Pages 4187-4197 

The coprecipitation of Sr into calcite precipitates
induced by bacterial ureolysis in artificial 
groundwater: Temperature and kinetic dependence  • 
Andrew C. Mitchell and F. Grant Ferris
Pages 4199-4210 

Immobilization of Ni by Al-modified montmorillonite:
A novel uptake mechanism  • 
Maarten Nachtegaal, Andre M. Scheidegger, Rainer Dahn, 
Daniel Chateigner and Gerhard Furrer
Pages 4211-4225 

Effects of temperature and transport conditions on 
calcite growth in the presence of Mg2+: 
Implications for paleothermometry  • 
Laura E. Wasylenki, Patricia M. Dove and James J. De Yoreo
Pages 4227-4236 

Effects of intracellular structural associations
on degradation of algal chloropigments in 
natural oxic and anoxic seawaters  • 
Haibing Ding and Ming-Yi Sun
Pages 4237-4252 

Determination of sediment provenance at drift 
sites using hydrogen isotopes and unsaturation
ratios in alkenones  • 
Amy C. Englebrecht and Julian P. Sachs
Pages 4253-4265 

Molecular biogeochemistry of sulfate reduction, 
methanogenesis and the anaerobic oxidation of 
methane at Gulf of Mexico cold seeps  • 
Beth! Orcutt, Antje Boetius, Marcus Elvert, 
Vladimir Samarkin and Samantha B. Joye
Pages 4267-4281 

Formation and chemical evolution of magnesium 
chloride brines by evaporite dissolution 
processes - Implications for evaporite geochemistry  • 
Ralf E. Krupp
Pages 4283-4299 

Boron isotopic fractionation between minerals and 
fluids: New insights from in situ high pressure-high
temperature vibrational spectroscopic data  • 
Carmen Sanchez-Valle, Bruno Reynard, Isabelle Daniel, 
Christophe Lecuyer, Isabelle Martinez and 
Jean-Claude Chervin
Pages 4301-4313 

Multi-spectroscopic study of Fe(II) in silicate glasses: 
Implications for the coordination environment of 
Fe(II) in silicate melts  • 
Pages 4315-4332 
William E. Jackson, Francois Farges, Mark Yeager, 
Patricia A. Mabrouk, Stephanie Rossano, 
Glenn A. Waychunas, Edward I. Solomon and 
Gordon E. Brown, Jr

UHP metamorphism and exhumation of the Dabie Orogen, China: 
Evidence from SHRIMP dating of zircon and monazite from 
a UHP granitic gneiss cobble from the Hefei Basin  • 
Yusheng Wan, Renwei Li, Simon A. Wilde, Dunyi Liu, 
Zhenyu Chen, Ling Yan, Tianrui Song and Xiaoyan Yin
Pages 4333-4348 

Partitioning of Cu, Ni, Au, and platinum-group 
elements between monosulfide solid solution and 
sulfide melt under controlled oxygen and sulfur fugacities  • 
James E. Mungall, David R.A. Andrews, Louis J. Cabri, 
Paul J. Sylvester and Michael Tubrett
Pages 4349-4360 

An investigation into thermodynamic consistency of data 
for the olivine, wadsleyite and ringwoodite form of (Mg,Fe)2SiO4  • 
Michel H.G. Jacobs and Bernard H.W.S. de Jong
Pages 4361-4375 

New insight on aliphatic linkages in the macromolecular 
organic fraction of Orgueil and Murchison meteorites 
through ruthenium tetroxide oxidation  • 
Laurent Remusat, Sylvie Derenne and Francois Robert
Pages 4377-4386 

Comment and Response

Comment on: “Origin, timing, and temperature of secondary
calcite-silica mineral formation at Yucca Mountain, 
Nevada” by N. S. F. Wilson, J. S. Cline, and Y. V. Amelin  • 
Yuri V. Dublyansky, Sergey Z. Smirnov and Sergey E. Pashenko
Pages 4387-4390 

Reply to the Comment on “Origin, timing, and temperature of 
secondary calcite-silica mineral formation at Yucca 
Mountain, Nevada” by Y. V. Dublyansky, S. Z. Smirnov, 
and G. P. Palyanova  • CORRESPONDENCE
Nicholas S.F. Wilson and Jean S.K. Cline
Pages 4391-4395