Geochimica et Cosmochimica Acta, 2004, V 68, N 5, 1 March.

1.   
 Fe(CO3)OH in goethite from a mid-latitude North American Oxisol: 
 estimate of atmospheric CO2 concentration in the Early Eocene 
 "climatic optimum",  
 Crayton J. Yapp
 Pages 935-947

2.   
 Oxygen isotope exchange kinetics between H2O and H4SiO4
 from ab initio calculations1, 
 Mihali A. Felipe , James D. Kubicki and Danny M. Rye
 Pages 949-958 

3.   
 Temporal variability in sources of dissolved organic carbon
 in the lower Mississippi river,  
 Thomas S. Bianchi , Timothy Filley , Karl Dria and Patrick G. Hatcher
 Pages 959-967

4.   
 Speciation and characterization of arsenic in gold ores and 
 cyanidation tailings using X-ray absorption spectroscopy1,  
 Dogan Paktunc , Andrea Foster , Steve Heald and Gilles Laflamme
 Pages 969-983

5.   
 U-Th dating of Lake Lisan (late Pleistocene dead sea) aragonite
 and implications for glacial east Mediterranean climate change,
 Alexandra Haase-Schramm , Steven L. Goldstein and Mordechai Stein
  Pages 985-1005

6.   
 Controls on the spatial and temporal variability of vadose dripwater
 geochemistry: Edwards aquifer, central Texas1, 
 MaryLynn Musgrove and Jay L. Banner
 Pages 1007-1020 

7.   
 Carbonate and silicate weathering in two presently glaciated,
 crystalline catchments in the Swiss Alps1,
 R. Hosein , K. Arn , P. Steinmann , T. Adatte and K. B. Fllmi
 Pages 1021-1033 

8.   
 Dissolved Al, In, and Ce in the eastern Indian Ocean and the
 Southeast Asian Seas in comparison with the radionuclides
 210Pb and 210Po1, 
 Hajime Obata , Yoshiyuki Nozaki , Dia Sotto Alibo and
 Yoshiyuki Yamamoto
 Pages 1035-1048  

9.   
 Thermodynamics of iron oxides: Part III. Enthalpies of formation
 and stability of ferrihydrite (~Fe(OH)3), schwertmannite
 (~FeO(OH)3/4(SO4)1/8), and -Fe2O3 1,  
 J. Majzlan , A. Navrotsky and U. Schwertmann
 Pages 1049-1059

10.   
 Early diagenesis of biogenic silica in the Amazon delta: 
 alteration, authigenic clay formation, and storage,  
 Panagiotis Michalopoulos and Robert C. Aller
 Pages 1061-1085

11.   
 Thiols in hydrothermal solution: standard partial molal
 properties and their role in the organic geochemistry
 of hydrothermal environments3,
 Mitchell D. Schulte and Karyn L. Rogers
 Pages 1087-1097 

12.   
 Sm-Nd, Lu-Hf and Pb-Pb signatures of gneisses and
 granitoids from the La Grande belt: extent of late Archean
 crustal recycling in the northeastern Superior Province,
 Canada2,  
 Helene Isnard and Clement Gariepy
 Pages 1099-1113

13.   
 Geochemical models of metasomatism in ultramafic systems:
 serpentinization, rodingitization, and sea floor carbonate
 chimney precipitation 1, 
 James L. Palandri and Mark H. Reed
 Pages 1115-1133 

14.   
 Petrographic and oxygen-isotopic study of refractory forsterites
 from R-chondrite Dar al Gani 013 (R3.5–6), unequilibrated
 ordinary and carbonaceous chondrites, 
 Andreas Pack , Hisayoshi Yurimoto and Herbert Palme
 Pages 1135-1157 

15.   
 Oxygen isotopic compositions of IVA iron meteorites: implications
 for the thermal evolution derived from in situ ultraviolet laser
 microprobe analyses1,
 Pei-Ling Wang , Douglas Rumble, III and Timothy J. McCoy
 Pages 1159-1171