Table Of Content

Chemical Geology, 97 (1992) 323-324 Elsevier Science Publishers B.V., Amsterdam Contents Volume 97, 1992 Research Papers Precise calibration of Nd tracer isotopic compositions for Sm-Nd studies J.C. Roddick, R.W. Sullivan and F.O. Dudds (Ottawa, Ont., Canada) ......c.cccccccccssssssesescssssscesesesescscscscecssesescesscsescscsscscecees 1 Evidence of magmatic activity related to Middle Jurassic and Lower Cretaceous rifting from northeastern Brazil (Ceara-Mirim) : K/Ar age, palaeomagnetism, petrology and Sr-Nd isotope characteristics G. Bellieni (Padova, Italy), M.H.F. Macedo (Natal, Brazil), R. Petrini (Pisa, Italy), E.M. Piccirillo (Trieste, Italy) ,G . Cavazzini (Padova, Italy), P. Comin-Chiaramonti (Palermo, Italy), M. Ernesto (Sao Paulo, Brazil), J.W.P. Macedo (Natal, Brazil), G. Martins, A.J. Melfi, I.G. Pacca (Sao Paulo, Brazil) and A. De Min (Trieste, MOIS D siicisceussssicssinsoin'ccaiieink kien lees Rsaehd aia ae Raina ic cia TCR ire BES 9 REE and Sr-Nd isotope geochemistry of the alkaline magmatism from the Cretaceous North Pyrenean Rift Zone (France-Spain ) M. Rossy (Besancon, France), B. Azambre (Paris, France) and F. Albaréde (Vandceuvre-lés-Nancy, France).......... 33 Magmatism in the South China Basin, 1. Isotopic and trace-element evidence for an endogenous Dupal mantle component K. Tu, M.F.J. Flower (Chicago, IIl., U.S.A.), R.W. Carlson (Washington, D.C., U.S.A.), G. Xie (Guangzhou, People’s Republic of China), C.-Y. Chen (Urbana, Ill., U.S.A.) and M. Zhang (Chicago, II]., U.S.A. ).......cccccscssseeeeeeee 47 Magmatism in the South China Basin, 2. Post-spreading Quaternary basalts from Hainan Island, south China M.F.J. Flower, M. Zhang (Chicago, Ill., U.S.A.), C.-Y. Chen (Urbana, Ill., U.S.A.), K. Tu (Chicago, IIl., U.S.A.) and G. Xie (Guangzhou, People’s Republic of Chima) .................sssccssssccssscessscccssecesssecesseceesseesseeesseecesseseesesestesssssscessssensecs 65 The europium anomalies in banded iron formations and the thermal history of the oceanic crust A. Danielson (Johannesburg, South Africa), P. Moller and P. Dulski (Berlin, Federal Republic of Germany) ........... 89 Olivine dissolution kinetics at near-surface conditions R.A. Wogelius and J.V. Walther (Evanston, II]., U.S.A.) .............sscsssscsssssssscssscsssssssscssscsessseescesscessessesessssesscestesssssensseessesses 101 The dissolution of calcite in seawater from 40° to 90°C at atmospheric pressure and 35%o salinity C.F. Estrada Maldonado (Toulouse, France), G. Giroir (Marseille, France), J.L. Dandurand and J. Schott IS TI Ne: crane ne Teer SEDVERNE AER RT SS! Se ORCAS CARMAN HM AO EP PEN cl RW eT HN NE ENS eRe 113 Application of isotopic doping techniques to evaluation of reaction kinetics and fluid/mineral distribution coefficients: An experimental study of calcite at elevated temperatures and pressures J.W. Beck, M.E. Berndt and W.E. Seyfried, Jr. (Minneapolis, Minn., U.S.A. )............cccssccsssssesssssssecssssessssssssscsseessseseeess 125 Carbon and sulfur relationships in marine Senonian organic-rich, iron-poor sediments from Israel — A case study T. Minster, Y. Nathan (Jerusalem, Israel) and A. Raveh (Mishor Rotem, Israel) ................cccssssscssssssscccssssssssccessessecesees 145 Petrogenesis of plutonic rocks in a Proterozoic granulite-facies terrane — the Bunger Hills, East Antarctica J.W. Sheraton, L.P. Black (Canberra, A.C.T., Australia) and A.G. Tindle (Milton Keynes, U.K.) .......ecece eeceeeceeceee s 163 Geochemistry and petrogenesis of Upper Cretaceous basaltic rocks from southern Malagasy J. Dostal (Halifax, N.S., Canada), C. Dupuy (Montpellier, France), C. Nicollet and J.M. Cantagrel Se eeneeea REISS ARMS aaa CNT <1 Sra RMU IOTIN Doe P DOT NE AP RN eNO PEON NOMI DOA Ae SOOT ERE TREE ARID 199 Isotope and trace-element geochemistry of alkali basalts and associated megacrysts from the Huangyishan volcano, Kuandian, Liaoning, NE China C.-Q. Liu (Saitama and Tokyo, Japan, and Guiyang, People’s Republic of China), A. Masuda (Tokyo, Japan) and G.-H. Xie (Guiyang, People’s Republic of China) ...............csssssssccsscsssccsssccsceesccssccessceseeesseesseesseecsseeeeesnsesssseeseeseeenees 219 Isotopic compositions of late Cenozoic volcanics from southeast Papua New Guinea: Evidence for multi-component sources in arc and rift environments E. Hegner (Federal Republic of Germany) and I.E.M. Smith (Auckland, New Zealand) ................sscssssscsscesessesseeseeneeeee 233 Biotite oxidation processes in ash-flow tuffs (Mendoza, Argentina): A Méssbauer spectroscopy and chemical study L.E. Kleiman, C. Saragovi (Buenos Aires, Argentina), C. Puglisi (San Martin, Argentina) and F. Labenski de Se Cs Te I as ssch sacce inenalanhipeaantusebniiamad eimauiiaadanonolaamonletheatbiptiahautdniensennneotaiiabhdbinianpeeannitetests 251 Gold-graphite association in granulite terrains — Implications for ore genesis C.B. Dissanayake (Peradeniya, Sri Lanka) and M.S. Rupasinghe (Kandy, Sri Lanka) ...............cccessesscesseeseesscseeeseeeeees 0009-2541/92/$05.00 © 1992 Elsevier Science Publishers B.V. All rights reserved. 324 CONTENTS VOLUME 97, 1992 Genetic implications of trace-element distributions in carbonate and non-carbonate phases of limestones and dolostones from western Cantabria, Spain M. Bustillo, R. Fort and S. Ordofiez (Madrid, Spain) Geochemically controlled calcite precipitation by CO, outgassing: Field measurements of precipitation rates in comparison to theoretical predictions W. Dreybrodt, D. Buhmann (Bremen, Federal Republic of Germany), J. Michaelis and E. Usdowski (Géttingen, Federal Republic of Germany) Application of a field portable anodic stripping voltammeter to the analysis of sulphide-selective leaches and waters G.E.M. Hall and J.E. Vaive (Ottawa, Ont., Canada) A much modified and miniaturised chemical degradation procedure for the analysis of both simple organic compounds and biologically derived macromolecules: Ruthenium tetroxide oxidation Soe NIUE nc RII ©I IR FR Bight dsc scsscccisduidensdentsbhcssmcnsbarndcosnoddnbbenankinedandcesdliasebbausnbonadubbpacsscsdeastisddsbuntenhindentes 307 Book Review Oceanic Basalts, by P.A. Floyd (Editor) — L. Melchior Larsen Contents Volume 97, 1992