Geochimica et Cosmochimica Acta, 2005, V 69, N 24, 15 December.

Table of contents  • 
Page CO1 

Editorial board  • 
Page CO2 

Reduction of U(VI) to U(IV) on 
the surface of magnetite  • 
T.B. Scott, G.C. Allen, 
P.J. Heard and M.G. Randell
Pages 5639-5646 

Boric acid, "carbonic" acid, and 
N-containing oxyacids in aqueous 
solution: Ab initio studies of 
structure, pKa, NMR shifts, and 
isotopic fractionations  • 
J.A. Tossell
Pages 5647-5658 

Basalt weathering in Central Siberia
under permafrost conditions  • 
O.S. Pokrovsky, J. Schott, 
D.I. Kudryavtzev and B. Dupre
Pages 5659-5680 

Effects of phosphate ions on intergranular
pressure solution in calcite: An experimental study  • 
Xiangmin Zhang and Christopher J. Spiers
Pages 5681-5691 

Liquid-vapor fractionation of boron and boron
isotopes: Experimental calibration at 
400°C/23 MPa to 450°C/42 MPa  • 
A. Liebscher, A. Meixner, R.L. Romer and W. Heinrich
Pages 5693-5704 

Lithium and boron isotopes in illite-smectite: 
The importance of crystal size  • 
Lynda B. Williams and Richard L. Hervig
Pages 5705-5716 

Records of cosmogenic radionuclides 10Be, 
26Al and 36Cl in corals: First studies on 
coral erosion rates and potential of 
dating very old corals  • 
Devendra Lal, Christina D. Gallup, 
Bhamdipati L.K. Somayajulu, Loic Vacher, 
Mark W. Caffee, Anthony J.T. Jull, 
Robert C. Finkel, Robert C. Speed and 
Amos Winter
Pages 5717-5728 

Sources, degassing, and contamination 
of CO2, H2O, He, Ne, and Ar in basaltic 
glasses from Kolbeinsey Ridge, North Atlantic  • 
Colin G. Macpherson, David R. Hilton, 
Dieter F. Mertz and Tibor J. Dunai
Pages 5729-5746 

Nd, Sr and Os isotope systematics in young, 
fertile spinel peridotite xenoliths from 
northern Queensland, Australia: 
A unique view of depleted MORB mantle?  • 
M.R. Handler, V.C. Bennett and R.W. Carlson
Pages 5747-5763 

Experimental determination of argon 
solubility in silicate melts: An 
assessment of the effects of liquid 
composition and temperature  • 
Y. Marrocchi and M.J. Toplis
Pages 5765-5776 

Fe-Mg order-disorder in orthopyroxenes  • 
Liping Wang, Namdoo Moon, Youxue Zhang, 
William R. Dunham and Eric J. Essene
Pages 5777-5788 

Oxygen isotopic and chemical compositions 
of cosmic spherules collected from the 
Antarctic ice sheet: Implications for 
their precursor materials  • 
Toru Yada, Tomoki Nakamura, Takaaki Noguchi, 
Noriko Matsumoto, Minoru Kusakabe, 
Hajime Hiyagon, Takayuki Ushikubo, 
Naoji Sugiura, Hideyasu Kojima and 
Nobuo Takaoka
Pages 5789-5804 

Early core formation in asteroids and 
late accretion of chondrite parent bodies: 
Evidence from 182Hf-182W in CAIs, 
metal-rich chondrites, and iron meteorites  • 
Thorsten Kleine, Klaus Mezger, 
Herbert Palme, Erik Scherer 
and Carsten Munker
Pages 5805-5818 

Constraints on the U-Pb isotopic systematics
of Mars inferred from a combined U-Pb, Rb-Sr, 
and Sm-Nd isotopic study of the Martian 
meteorite Zagami  • 
Lars E. Borg, Jennifer E. Edmunson 
and Yemane Asmerom
Pages 5819-5830 

Petrogenesis of the Apollo 14 high-alumina basalts:
Implications from ion microprobe analyses  • 
Justin J. Hagerty, Charles K. Shearer and 
James J. Papike
Pages 5831-5845 

U-Pb and 207Pb-206Pb ages of zircons from 
basaltic eucrites: Implications for early 
basaltic volcanism on the eucrite parent body  • 
Keiji Misawa, Akira Yamaguchi and Hiroshi Kaiden
Pages 5847-5861 


Erratum to Michael H. Bradbury and Bart 
Baeyens (2005) "Experimental measurements 
and modeling of sorption competition on 
montmorillonite", Geochimica et Cosmochimica 
Acta 69, 4187-4197  • 
Michael H. Bradbury and Bart Baeyens
Pages 5863-5864 

Annual index  • 
Page I 

List of contents  • 
Pages II-XXIV 

Author index  • 
Pages XLV-LI