Table Of Content

Chemical Geology (Isotope Geoscience Section), 101 (1992) 323-324 Elsevier Science Publishers B.V., Amsterdam Contents Volume 101, 1992 Special Issue “Frontiers in Isotope Geosciences”, by R.S. Harmon and R.W. Hinton (Guest-Editors) Introduction, by R.S. Harmon and R.W. Hinton (Guest-Editors) .............cccccsssssssssscecceeesseceeceeeeeeecceeesseeeeeesseceeeeeeeeeeees Vil Part I— Published Proceedings of the NERC Isotope Geosciences Laboratory Conference on ‘‘Frontiers in Isotope Geosciences” held at the Kingsley Dunham Centre, Keyworth, on January 3 and 4, 1991 In situ laser microprobe techniques for stable isotope analysis ek Ge BI i ici i caethcssacebdhcnleceinhaiciaa eiehaeiaeiehnidlhoreessniicebaindsinesebisaaetidnni ntoaitadonebbanamcanentniiinlatbiiaadnat e 3 In situ oxygen isotope analysis of feldspar and quartz by Nd: YAG laser microprobe D. Eisenhoimer and J.W. Valley (Namdism, Wis... U.S.A.) .cccccccsccceccsccsessssoscsccccssssscssesscosscesccosecccnscssvoecossisososoosesoossess 21 LASSIE (laser ablation sampler for stable isotope extraction )a pplied to carbonate minerals P.C. Smalley, C.N. Maile, M.L. Coleman and J.E. Rouse (Sunbury-on-Thames, U.K.) .0.............cccceeeeseeeeeeeeeeeeeeeees 43 Laser microprobe stable isotope measurements on geological materials: Some experimental considerations (with special reference to 0°*4S in sulphides ) A.E. Fallick, P. McConville, A.J. Boyce, R. Burgess and S.P. Kelley (Glasgow, U.K.) ............cccceeeesesssseeeeeeeseeeeeeeees 53 Laser microprobe study of sulfur isotope variation in a sea-floor hydrothermal spire, Axial Seamount, Juan de Fuca Ridge, eastern Pacific es Se NE Fae. Vey CIM, FR, UA) aceviscssesicccnrcscenecscisnssticinsiiosecsitissseunsunpasniddsabbaaitnnsentibaheeniivastuesisis 63 Some instrumental effects in the determination of stable carbon isotope ratios by gas chromatography-isotope ratio mass spectrometry Fic ee, Pate ee UNE Bs EN CTI ETD iiss cnisisiiscetin cc inciesccissintaasnattiintacncinicasiusiialintbidisnlesugnennsaanelaidanlaial 71 Application of high-sensitivity carbon isotope techniques — a question of blanks Pa Ws Ei. See GG Fc ee Ce I, GD satin sec tcectsnincecisntacinscteniininhcnnnssttnansnsititaiissiimesnnaseier 81 Oxygen stable isotope measurements on a gravestone exposed to the Hiroshima A-bomb explosion and the “Dosimetry System 1986” D. Blamart, W. Riihm, W. Spiegel (Garching, Germany), K. Kato (Hiroshima, Japan), G. Korschinek, H. Morinaga, G. Morteani and E. Nolte (Garching, Germanty ).............sescsccessesssscssssesssessncscsoosesoesvonsescssesseseessecossecseseese 93 The abundance and isotopic composition of the noble gases in ancient fluids ee NS ee ee es Or iia BFa icncia rcp vicsvetnntacsizanisneacicncnenscrericcinsnsierntastedinnanbiedaiaithiiaindaddiaiiialats 97 Negative thermal ionisation mass spectrometry: a new approach to boron isotope geochemistry a AN I niss sinciszceasdnivadinecenabuneensatsislibichinnaliaiasecwensanneaiedastesmabounatsbibliakaibiamauibialisaiapinininiiditianioeiatsiia 111 Experimental determination of fractionation of ''B/'°B between tourmaline and aqueous vapor: A temperature- and pressure-dependent isotopic system M.R. Palmer (Bristol, U.K.), D. London (Norman, Okla., U.S.A.), G.B. Morgan VI (St. Louis, Mo., U.S.A.) i. a a Rk, Sa icshitncititaiciesecin Sacisiniicttiecneenlstlbeiinrtheietchgltiintiaeinek ndiaaibaiieedailiibtiiiipio n 123 Single-zircon dating by step-wise Pb evaporation: Comparison with other geochronological techniques applied to the Hercynian granites of Corsica, France i Ce i i. ss sais ca niainieinsedngnedelinna nehannekadiuneebebieaaddinbnaninedinnhinnsieneniiontion 131 Laser *°Ar—*’Ar ages for individual detrital muscovites in the Southern Uplands of Scotland, U.K. S.P. Kelley (Milton Keynes, U.K.) and B.J. Bluck (Cilaagow, U.K. ).........cccccccsseccsccsccsccescscsseccensesccoosscossscssesesooeesees 143 Thorium isotope ratio measurements at high abundance sensitivity using a VG 54-30®, an energy-filtered thermal ionization mass spectrometer Z.A. Painacz, P.A. FrosG@man and A.J. WaiGer (hEsGGIOWIGe, UTR. ) nsccccccssssscscscsscccscccsessasessossessccsscscsnssccsssstessonesseceses 157 Part II — Short reports (with discussion) of the ‘‘Ion Microprobe Stable Isotope’ Workshop held at the University of Manchester on January 5, 1991 Sulphur isotope analysis of pyrites C.M. Graham (Edinburgh, U.K.) and J.W. Valley (Madison, Wis., U.S.A.) ...........ceeeeceseseseseseeeeeeeeeesessseeeeeeeeeeeees 169 0168-9622/92/$05.00 © 1992 Elsevier Science Publishers B.V. All rights reserved. 324 CONTENTS VOLUME 101, 1992 Oxygen isotope measurement of magnetites J.W. Valley (Madison, Wis., U.S.A.) and C.M. Graham (Edinburgh, U.K.) .0...... ccc eee ceeeeseeeeeesesseeeeeeseeeeeeeeeeenees 173 Carbon isotope measurements on diamonds B. Harte (Edinburgh, U.K.) and M. Otter (Rondebosch, South Africa) Oxygen isotope analysis using extreme energy filtering iii, SUNT ©W RNIIIIEL, SERIE. CRIN I ipc sisisier esaistncencentbichennetenniniindabinsdsmabapenbananspediabaiapmdieianuieninlstiiniscssbnirrssstseseseeseeies 185 Instrumental limitations for isotope measurements with a Caméca® ims-3f ion microprobe: Example of H, B, S and Sr E. Deloule, M. Chaussidon and P. Allé (Nancy, France) Oxygen isotope analysis on the Caméca® ims-300 J.C. Lorin (Orsay, France) The Isolab® 54 ion microprobe eS ae OS Pi cela Sasiedelicdactibcsahbtknadiicaesibiccincnranensecedsnedennnicndnadllinsecuabanteinintacseenanesatiodnaberasnees 197 Special Issue “Isotope Fractionations in Organic Matter: Biosynthetic and Diagenetic Processes”, by S.A. Macko and M.H. Engel (Guest-Editors) Introduction, by S.A. Macko and M.H. Engel (Guest-Editors) Stable isotope fractionation of biomonomers during protokerogen formation Y. Qian, M.H. Engel (Norman, Okla., U.S.A.) and S.A. Macko (Charlottesville, Va., U.S.A.) ......c cc ceeeeseseeeeeeeeee 201 Kinetic fractionation of stable carbon and nitrogen isotopes during peptide bond hydrolysis: Experimental evidence and geochemical implications J.A. Silfer, M.H. Engel (Norman, Okla., U.S.A.) and S.A. Macko (Charlottesville, Va., U.S.A.) Stable carbon isotope variations in sediment from Baffin Bay, Texas, U.S.A.: Evidence for cyclic changes in organic matter source B. Anderson, R.S. Scalan, E.Wm. Behrens and P.L. Parker (Port Aransas, Texas, U.S.A.) .............cccceseeeeeeeeeeeeeeeeees 223 The stable isotopic composition of photosynthetic pigments and related biochemicals M.C. Kennicutt II (College Station, Texas, U.S.A.), R.R. Bidigare (Honolulu, Hawaii, U.S.A.), S.A. Macko (Charlottesville, Va., U.S.A.) and W.L. Keeney-Kennicutt (College Station, Texas, U.S.A.) ........eeeeeeeeeeeeeeeeeeeeees 235 Chemical changes and carbon isotope variations in a cross-section of a large Miocene gymnospermous log A.L. Bates and E.C. Spiker (Reston, Va., U.S.A.) Stable isotope (C, S, N) and molecular studies on the Precambrian Nonesuch Shale (Wisconsin—Michigan, U.S.A. ): Evidence for differential preservation rates, depositional environment and hydrothermal influence S.W. Imbus (Houston, Texas, U.S.A.), S.A. Macko (Charlottesville, Va., U.S.A.), R.D. Elmore and M.H. I al lesen senislinniadbdibnheend Rabe dabaninbbidininndlsassaimebasinienecasenes 255 Changes in organic carbon stable isotope ratios across the K/T boundary: global or local control? i da anne aigehuiinmin a oaeanbemaellidansbbtanebinnnvathateaketetinankrscesee 283 Stable isotope partitioning in seep and vent organisms: chemical and ecological significance M.C. Kennicutt II, R.A. Burke, Jr., I.R. MacDonald, J.M. Brooks, G.J. Denoux (College Station, Texas, ae ee ir I eT Dn cn scvsssmbddsiiasendenendobbasbabedentesnnbbbnibeentnksnbidenisinneesanenbanevesoeseni 293 Carbonate mineral distribution and isotope fractionation: An approach to depositional environment interpretation, Green River Formation, Wyoming, U.S.A. G.M. Mason (New Albany, Ind., U.S.A.) and R.C. Surdam (Laramie, Wyo., U.S.A. )...............ccccecsssseeeeeeereeeeeeeeees 311 Contents Volume 101, 1992