Geochimica et Cosmochimica Acta, 2003, V 67, N 7, 1 April.

1.
Hydrogen isotope exchange kinetics between H2O and H4SiO4 from ab initio 
calculations, 
M. A. Felipe, J. D. Kubicki and D. M. Rye
Pages 1259-1276

2.
Controls on Fe reduction and mineral formation by a subsurface bacterium,
Susan Glasauer, Peter G. Weidler, Sean Langley and Terry J. Beveridge
Pages 1277-1288

3.
Forces and ionic transport between mica surfaces: implications for pressure 
solution, 
Norma Alcantar, Jacob Israelachvili and Jim Boles
Pages 1289-1304

4.
Northern latitude chemical weathering rates: clues from the Mackenzie River 
Basin, Canada, 
Romain Millot, J. e'ro^me Gaillardet, Bernard Dupre' and Claude Jean Alle`gre
Pages 1305-1329

5.
Comparative geochemistries of PdII and PtII:: Formation of mixed hydroxychloro 
and chlorocarbonato-complexes in seawater, 
Jeanette M. Cosden and Robert H. Byrne
Pages 1331-1338

6.
A diatomaceous origin for long-chain diols and mid-chain hydroxy methyl 
alkanoates widely occurring in quaternary marine sediments: indicators for high-
nutrient conditions, 
Jaap S. Sinninghe Damste', Sebastiaan Rampen, W. Irene, C. Rijpstra, Ben Abbas, 
Gerard Muyzer and Stefan Schouten
Pages 1339-1348

7.
Oxygen isotope systematics in Diploastrea heliopora: new coral archive of 
tropical paleoclimate, 
Tsuyoshi Watanabe, Michael K. Gagan, Thierry Corre'ge, Heather Scott-Gagan,
Joan Cowley and Wahyoe S. Hantoro
Pages 1349-1358

8.
Archaea mediate anaerobic oxidation of methane in deep euxinic waters of the 
Black Sea, 
Stuart G. Wakeham, Cynthia M. Lewis, Ellen C. Hopmans, Stefan Schouten and
Jaap S. Sinninghe Damste'
Pages 1359-1374

9.
Model for kinetic effects on calcium isotope fractionation ( [small delta, 
Greek] 44Ca) in inorganic aragonite and cultured planktonic foraminifera,
Nikolaus Gussone, Anton Eisenhauer, Alexander Heuser, Martin Dietzel,
Barbara Bock, Florian Bo"hm, Howard J. Spero, David W. Lea, Jelle Bijma and 
Thomas F. Na"gler
Pages 1375-1382

10.
Evidence for the rapid incorporation of hopanoids into kerogen, 
Paul Farrimond, Gordon D. Love, Andrew N. Bishop, Helen E. Innes, 
Diane F. Watson and Colin E. Snape
Pages 1383-1394

11.
Experimental determination of the stability and stoichiometry of sulphide 
complexes of silver(I) in hydrothermal solutions to 400°C, 
A. Stefa'nsson and T. M. Seward
Pages 1395-1413

12. 
Alkali exchange equilibria between a silicate melt and coexisting magmatic 
volatile phase: an experimental study at 800°C and 100 MPa, 
Mark R. Frank, Philip A. Candela and Philip M. Piccoli
Pages 1415-1427

13.
Evidence that polycyclic aromatic hydrocarbons in two carbonaceous chondrites 
predate parent-body formation, 
Fiona L. Plows, Jamie E. Elsila, Richard N. Zare and Peter R. Buseck
Pages 1429-1436