Table Of Content

Chemical Geology, 111 (1994) 327 Elsevier Science B.V., Amsterdam Contents Volume 111, 1994 Research Papers Amino acids of Proterozoic and Ordovician sulphide-coated grains from western Canada: Record of biologically- mediated pyrite precipitation S. Nardi, P.L. Binda, L.S. Baccelle and G. Concheri An organic geochemical profile of the Toarcian anoxic event in northern Italy P. Farrimond, D.P. Stoddart and H.C. Jenkyns Sources and dynamics of sulfur in weathered till, Western Glaciated Plains of North America D.R. Van Stempvoort, M. James Hendry, J.J. Schoenau and H.R. Krouse Criteria for determining initial lead isotopic compositions of pyrite in Archaean lode-gold deposits: a case study at Victory, Kambalda, Western Australia S.E. Ho, N.J. McNaughton and D.I. Groves Molar ratios in the study of unaltered and hydrothermally altered greywackes and shales J.F. Davies and R.E. Whitehead A comparison of iron extraction methods for the determination of degree of pyritisation and the recognition of iron- limited pyrite formation R. Raiswell, D.E. Canfieid and R.A. Berner Comparison of geochemical indices used for the interpretation of palaeoredox conditions in ancient mudstones B. Jones and D.A.C. Manning The determination of total sulphur in geological materials by coulometric titration B.P. Atkin and C. Somerfield Sources of dissolved salts in the central Murray Basin, Australia B.F. Jones, J.S. Hanor and W.R. Evans Multi-element chemistry of some Amazonian waters and soils K.O. Konhauser, W.S. Fyfe and B.I. Kronberg Geochemical evolution of the Precambrian Old Rag Granite, Virginia, U.S.A.: testing a U-Th exploration model W.H. Blackburn, R.V. Metcalf and P.C. Ragland The origin of Pyrenean Hercynian volcanic rocks (France-Spain ): REE and Sm-Nd isotope constraints J.S. Gilbert, M.J. Bickle and H.J. Chapman The trace-element variations in clinopyroxenes from spinel peridotite xenoliths from southwest Poland J. Blusztajn and N. Shimizu Effects of heating and prolonged electron bombardment on cathodoluminescence emission from synthetic calcite R.A. Mason Isotope Geoscience Section Research Papers On the use of 60°C “cooling ages” obtained using projected fission-track lengths in apatite D.A. Coyle and R. Powell The strontium isotopic composition of carbonates from the late Precambrian ( ~ 560-540 Ma) Hugf Group of Oman S.J. Burns, U. Haudenschild and A. Matter Evidence for oxygen isotope disequilibrium in selected geothermal and hydrothermal ore deposit systems D.R. Cole Interlaboratory comparison of methods to determine the stable isotope composition of soil water G.R. Walker, P.H. Woods and G.B. Allison Sulfur and carbon isotopes in Archean banded iron formations: Implications for sulfur sources R.J. Bowins and J.H. Crocket EAG News Contents Volume 111, 1994 Guide for Authors 0009-2541 /94/$07.00 © 1994 Elsevier Science B.V. All rights reserved.