Geochimica Et Cosmochimica Acta, 2007, V 70, N 21, 1 November.

Cd adsorption onto Anoxybacillus flavithermus: 
Surface complexation modeling and spectroscopic 
investigations  • 
Peta-Gaye G. Burnett, Christopher J. Daughney 
and Derek Peak
Pages 5253-5269

Uranyl sorption species at low coverage on 
Al-hydroxide: TRLFS and XAFS studies  • 
A. Froideval, M. Del Nero, C. Gaillard, 
R. Barillon, I. Rossini and J.L. Hazemann
Pages 5270-5284

A simple model for the effect of hydration 
on the distribution of ferrous iron at 
reduced hematite (0 1 2) surfaces  • 
Jianwei Wang and James R. Rustad
Pages 5285-5292

A threshold in soil formation at Earth’s 
arid–hyperarid transition  • 
Stephanie A. Ewing, Brad Sutter, Justine Owen, 
Kunihiko Nishiizumi, Warren Sharp, 
Steven S. Cliff, Kevin Perry, William Dietrich, 
Christopher P. McKay and Ronald Amundson
Pages 5293-5322

Carbon isotopic fractionation by the marine 
diatom Phaeodactylum tricornutum under 
nutrient- and light-limited growth conditions  • 
Nicolas Cassar, Edward A. Laws and Brian N. Popp
Pages 5323-5335

Microbial methane turnover at mud volcanoes 
of the Gulf of Cadiz  • 
H. Niemann, J. Duarte, C. Hensen, E. Omoregie, 
V.H. Magalhaes, M. Elvert, L.M. Pinheiro, 
A. Kopf and A. Boetius
Pages 5336-5355

Origin of ore fluids in the Muruntau gold 
system: Constraints from noble gas, carbon 
isotope and halogen data  • 
Torsten Graupner, Samuel Niedermann, Ulf Kempe, 
Reiner Klemd and Achim Bechtel
Pages 5356-5370

Brecciation and chemical heterogeneities of CI chondrites  • 
Andreas Morlok, Addi Bischoff, Thomas Stephan, 
Christine Floss, Ernst Zinner and Elmar K. Jessberger
Pages 5371-5394

The distribution of chiral asymmetry in meteorites: 
An investigation using asymmetric 
autocatalytic chiral sensors  • 
Tsuneomi Kawasaki, Kunihiko Hatase, Yusuke Fujii, 
Kazumichi Jo, Kenso Soai and Sandra Pizzarello
Pages 5395-5402

Noble gases in D’Orbigny, Sahara 99555 and 
D’Orbigny glass—Evidence for early planetary 
processing on the angrite parent body  • 
Henner Busemann, Silvio Lorenzetti 
and Otto Eugster
Pages 5403-5425
 
Comment and Response 

Comment on “Li and Be isotopic variations 
in an Allende CAI: Evidence for the in 
situ decay of short-lived 10Be and for 
the possible presence of the short-lived 
nuclide 7Be in the early solar system,” 
by M. Chaussidon, F. Robert, and K.D. McKeegan  • 
S.J. Desch and N. Ouellette
Pages 5426-5432


Reply to the comment by Desch and Ouellette 
on "Li and B isotopic variations in an Allende 
CAI: Evidence for the in situ decay of 
short-lived 10Be and for the possible 
presence of the short-lived nuclide 
7Be in the early solar system"  • 
Marc Chaussidon, Francois Robert 
and Kevin D. McKeegan
Pages 5433-5436