Table Of Content

Contents Volume 121 121 (1/2) Cooling of the Earth in the Archaean: Consequences of pressure-release melting in a hotter mantle N.J. Viaar, P.E. van Keken and A.P. van den Berg A short interval of Jurassic continental flood basalt volcanism in Antarctica as demonstrated by Mar /Ar geochronology A. Heimann, T.H. Fleming, D.H. Elliot and K.A. Foland Geochronological studies on whole-rock basalts, Deccan Traps, India: evaluation of the timing of volcanism relative to the K-T boundary Geomagnetic field stability: Reversal events and excursions R.T. Merrill and P.L. McFadden A record of reversed polarity carried by the iron sulphide greigite in British early Pleistocene sediments D.F. Hallam and B.A. Maher Magnetostratigraphic, lithostratigraphic and tephrostratigraphic constraints on Lower and Middle Pleistocene sea-level changes, Wanganui Basin, New Zealand B.J. Pillans, A.P. Roberts, G.S. Wilson, S.T. Abbott and B.V. Alloway Carbon and oxygen isotopic records of benthic foraminifera from the Northeast Indian Ocean: implications on glacial— interglacial atmospheric CO, changes W.A. Naqvi, C.D. Charles and R.G. Fairbanks ek. flux into Norwegian—Greenland Sea sediments: Evidence for lateral sediment transport during the past 300,000 years J.C. Scholten, R. Botz, H. Paetsch and P. Stoffers Recent East African earthquakes in the lower crust T. Seno and A. Saito Erosion processes in volcanic conduits and application to the AD 79 eruption of Vesuvius G. Macedonio, F. Dobran and A. Neri U-Pb systematics of phosphates from equilibrated ordinary chondrites C. Gépel, G. Manhés and C.J. Allégre Isotope and trace element characteristics of a super-fast spreading ridge: East Pacific rise, 13—23°S J.J. Mahoney, J.M. Sinton, M.D. Kurz, J.D. Macdougall, K.J. Spencer and G.W. Lugmair An overlapping propagating spreading center at 87°30’W on the Galapagos Spreading Center L.J. Perram and K.C. Macdonald Palaeomagnetism and 3 ar/“Ar vs. > Ar /“Ar isotope correlation ages of dyke swarms in central Kerala, implications T. Radhakrishna, R.D. Dallmeyer and M. Joseph Partial melting of subducting oceanic crust S.M. Peacock, T. Rushmer and A.B. Thompson Systematics of ridge propagation south of 30°S J.P. Morgan and D.T. Sandwell Erratum Fe in eucrites (Earth Planet. Sci. Lett. 119, 159-166, 1993) A. Shukolyukov and G.W. Lugmair 121 (3/4) T. Ringwood Kimberlite melting relations revisited S.E. Kesson, A.E. Ringwood and W.O. Hibberson Carbon isotope variations of CO, in Central Lau Basin basalts and ferrobasalts C. Macpherson and D. Mattey 678 Boron content and isotopic composition of oceanic basalts: Geochemical and cosmochemical implications M. Chaussidon and A. Jambon The role of water in the petrogenesis of Mariana trough magmas E. Stolper and S. Newman Hybridization of mingling magmas with different densities O. Grasset and F. Albaréde Magmatism and continental break-up in the South Atlantic: high precision War-Ar geochronology S. Turner, M. Regelous, S. Kelley, C.H awkesworth and M. Mantovani Characterisation of a plume-related ~ 800 Ma magmatic event and its implications for basin formation in central-southern Australia J.-x. Zhao, M.T. McCulloch and R.J. Korsch Interaction of the upwelling plume with the phase and chemical boundary at the 670 km discontinuity: Effects of temperature-dependent viscosity T. Nakakuki, H. Sato and H. Fujimoto Lower mantle thermal structure deduced from seismic tomography, mineral physics and numerical modelling O. Cadek, D.A. Yuen, V. Steinbach, A. Chopelas and C. Matyska Decompression melting at rifted margins: comparison of model predictions with the distribution of igneous rocks on the eastern Canadian margin C.E. Keen, R.C. Courtney, S.A. Dehler and M.-C. Williamson Mechanisms of extensional basin formation and vertical motions at rift flanks: Constraints from tectonic modelling and fission-track thermochronology P. van der Beek, S. Cloetingh and P. Andriessen Variation with spreading rate of oceanic crustal thickness and geochemistry J.W. Bown and R.S. White Mantle control of a dynamically evolving spreading center: Mid-Atlantic Ridge 31-34°S P.J. Michael, D.W. Forsyth, D.K. Blackman, P.J. Fox, B.B. Hanan, A.J. Harding, K.C. Macdonald, G.A. Neumann, J.A. Orcutt, M. Tolstoy and C.M. Weiland Mesozoic anomalies in the Bay of Bengal M.V. Ramana, R.R. Nair, K.V.L.N.S. Sarma, T. Ramprasad, K.S. Krishna, V. Subrahmanyam, M. D’Cruz, C. Subrahmanyam, J. Paul, A.S. Subrahmanyam and D.V. Chandra Sekhar Oblique convergence, indentation and rotation tectonics in the Taiwan Mountain Belt: Insights from experimental modelling C.-Y. Lu and J. Malavieille Global Positioning System (GPS) estimates of crustal deformation in the Marmara Sea region, Northwestern Anatolia C. Straub and H.-G. Kahle Counterclockwise rotation of Northeast Japan: Paleomagnetic evidence for regional extent and timing of rotation Y.-i. Otofuji, A.K ambara, T. Matsuda and S. Nohda The Corte Blanco garnetiferous tuff: A distinctive late Miocene marker bed in northwestern Argentina applied to magnetic polarity stratigraphy in the Rio Yacones, Salta Province J.G. Viramonte, J.H. Reynolds, C. Del Papa and A. Disalvo The age of the Tortonian/ Messinian boundary W. Krijgsman, F.J. Hilgen, C.G. Langereis and W.J. Zachariasse High-resolution isotopic records from corals using ocean temperature and mass-spawning chronometers M.K. Gagan, A.R. Chivas and P.J. Isdale A SEM-ATEM and stable isotope study of carbonates from the Haughton impact crater, Canada I. Martinez, P. Agrinier, U. Scharer and M. Javoy Oxygen self-diffusion in calcite: Dependence on temperature and water fugacity Premelting effects in minerals: an experimental study P. Richet, J. Ingrin, B.O. Mysen, P. Courtial and P. Gillet Kinetics of Pb release during the zircon evaporation technique H.J. Chapman and J.C. Roddick The origin of Mediterranean interstitial waters—relics of ancient Miocene brines: A re-evaluation A. Vengosh, A. Starinsky and D.A. Anati New paleomagnetic constraints on the Cenozoic tectonic evolution of the North Arm of Sulawesi, Indonesia J. Surmont, C. Laj, C. Kissel, C. Rangin, H. Bellon and B. Priadi Express Letters Mid-Tertiary changes in deep ocean circulation patterns in the Natal Valley and Transkei basin, Southwest Indian Ocean Z. Ben-Avraham, T.M. Niemi and C.J.H. Hartnady Hydrothermal activity on the Reykjanes Ridge: the Steinahdéll vent-field at 63°06’N c C.R. German, J. Briem, C. Chin, M. Danielsen, S. Holland, R. James, A. Jonsdéttir, E. Ludford, C. Moser, J. Olafsson, M.R. Palmer and M.D. Rudnicki Discussion Comment on “Rare earth elements in the Mediterranean Sea and mixing in the Mediterranean outflow” by M.J. Greaves, M. Rudnicki and H. Elderfield A.J. Thomas, C. Guieu and J.M. Martin Reply to comment by A.J. Thomas, C. Guieu and J.M. Martin on “Rare earth elements in the Mediterranean Sea and mixing in the Mediterranean outflow” M.J. Greaves and H. Elderfield Errata Consequences of melt transport for uranium series disequilibrium in young lavas (Earth Planet. Sci. Lett. 118, 1-20, 1993) M. Spiegelman and T. Elliott Microscale isotopic zonation in graphite crystals: Evidence for channelled CO, influx in granulites (Earth Planet. Sci. Lett. 119, 19-26, 1993) M. Santosh and H. Wada Melting rates beneath Hawaii: Evidence from uranium series isotopes in recent lavas (Earth and Planet. Sci. Lett. 120, 169-175, 1993) A.S. Cohen and R.K. O’Nions Author Index Volume 121