PAPERS TO APPEAR IN FORTHCOMING ISSUES

C. HOLMDEN, R.A. CREASER, and K. MUEHLENBACHS: Paleosalinities in ancient brackish water systems determined by ~Sr/~Sr ratios in carbonate fossils: A case study from the Western Canada Sedimentary Basin.

S. SCHOUTF~, M. SC•OELL, W. I. C. RJJPSTRA, J. Smu~unGI-m DAMST~, and J. W. DE LL~UW: A molecular stable carbon isotope study of organic matter in immature Miocene Monterey sediments, Pismo Basin.

P. SCHWEDA, L. SJOBERG, and U. SODEVALL: Near-surface composition of acid-leached labradorite investigated by SIMS.

V. TmF.L, A. J~SCH, G. L A N D ~ , A. R E ~ , and W. MICHAELIS : Unusual distributions of long-chain alkenones and tetrahymanol from the highly alkaline Lake Van, Turkey.

F. RENARD and P. ORTOI~VA: Water films at grain-grain contacts: Debye-Huckel, osmotic model of stress, salinity, and mineralogy dependence.

L. NYQUIST, D. BOGARD, H. TAKEDA, B. BANSAL, H. WIESMANN, and C.-Y. SHII-I: Crystallization, recrystallization, and impact-metamorphic ages of eucrites Y792510 and Y791186.

R. A. W o G ~ s , D. G. FRASER, G. R. T. WALL, and G. W. GRIME: Trace element and isotopic zonation in vein calcite from the Mendip Hills, UK, with spatial-process correlation analysis.

C. H. GAMMONS, Y. Yu, and A. E. WILL~MS-JONES : The disproportionation of gold(I) chloride complexes at 25 to 200°C.

F. L. LYNCH, L. E. MACK, and L. S. LAND: Burial-diagenesis of illite/smectite in shales and the origins of anthigenic quartz and secondary porosity in sandstones.

M. NOTO and M. KUSAKABE: An experimental study of oxygen isotope fractionation between wairakite and water.

M. NOTO and M. KUSAKABE: Oxygen isotope geochemistry of geothermal wairakite.

R. A. D. PATTRICK, J. F. W. MOSSmZ~ANS, J. M. CI-tARNOCK, K. E. R. ENOLAND, G. R. I-IELZ, C. D. GARNER, and D. J. V A U O ~ : The structure of amorphous copper sulfide precipitates: An X-ray absorption study.

J. R. SMITH and C. B. AOEE: Compressibility of moleten "green glass" and crystal-liquid density crossovers in low-Ti lunar magma.

P. D. MA-rrm, K. C. CONDna, J. SELVERSTONE, and P. R. KYLE: Origin of the continental crust in the Colorado Plateau: Geochemical evidence from marie xenoliths from the Navajo Volcanic Field, southwestern USA.

KANO XIA, W. BI.~AM, and P. A. I-Im.MI~: Studies of the nature of binding sites of first row transition elements bound to aquatic and soil humic substances using X-ray absorption spectroscopy.

KANO XIA, W. BLEAM, and P. A. HELMK~: Studies of the nature of Cu 2+ and Pb 2+ binding sites in soil humic substances using X-ray absorption spectroscopy.

B. SHERWOOD-LOLLAR, C J. BALL~'Tm~, and R. K. O'NIoNs: The fate of mantle-derived carbon in a continental sedimentary basin: Integration of C/He relationships and stable isotope signatures.

M. SCHMmT, R. B. BOTZ, P. STOFFF-a~, T. AnDERS, and G. BOI-mMA~n~: Oxygen isotopes in marine diatoms: A comparative study of analytical techniques and new results on the isotope composition of recent marine diatoms.

J. E. Mtn~OALL and D. B. DINOWELL: Actinide diffusion in a haplogranitic melt: Effects of temerature, water content, and pressure.

L. P. KELLF~ and D. S. MCKAY: The nature and origin of rims on lunar soil grains.

J. M. EmFm, K. A. FARLEY, J. W. VALLEY, E. HAUl, H. CP~aO, S. R. HART, and E. M. STOLPER: Oxygen isotope variations in ocean island basalt phenocrysts.

E. O. Dum~n~n and L. Z. LAKSI-rrANOV: A kinetic model of isotopic exchange in dissolution-precipitation processes.

J. J. PAPnCE, G. W. FOWLER, and C. K. S~mARER: Evolution of the lunar crust: SIMS study of plagioclase from ferroan anorthosites.

PING KONO and MrrsuRu E~n-IARA: The origin and nebular history of the metal phase of ordinary chondrites.

K. A. FARLEY, S. G. LovE, and D. B. PAttERSON: Atmospheric entry heating and helium retentivity of interplanetary dust particles.

D. L. SEDLAK and P. G. C~a~: The reduction of chromium(VI) by iron(H) in natural waters.

YouxuE 7_ao~o, J. JF~KINS, and ZHENGaU Xu: Kinetics of the reaction H20 + O ~ 2OH in rhyolitic glasses upon cooling: Geospeedometry and comparison with glass transition.

1961

1962 Forthcoming papers

C. M. KORETSKY, D. A. SVERJENSKY, J. W. SALISBURY, and D. M. D'ARIA: Detection of surface hydroxyl species on quartz, y-alumina, and feldspars using diffuse reflectance infrared spectroscopy.

C. HOLMDEN, D. m. PAPANASTASSIOU, and G. J. WASSERaURG: Negative thermal ion mass spectrometry of oxygen in phosphates,

n. A. STANKIEWICZ, D. E. G. BRIGGS, R. P. EVERSHED, and I. J DUNCAN: Chemical preservation of insect cuticle from the Pleistocene asphalt deposits of California, USA.

V. A. POKROVSrdI and H. C. HELGESON: Calculation of the standard partial molal thermodynamic properties of KCI ° and activity coefficients of aqueous KC1 at temperatures and pressures to 1000°C and 5 kbar.