Table Of Content

Earth and Planetary Science Letters 125 (1994) 487-488 Contents Volume 125 2381 _ 230TH 226Ra and *°U-3!Pa disequilibria produced by mantle melting with porous and channel flows H. Iwamori Isotopic constraints on the production rates, crystallisation histories and residence times of pre-caldera silicic magmas, Long Valley, California G.R. Davies, A.N. Halliday, G.A. Mahood and C.M. Hall Controls on the Sr and Nd isotopic compositions of hydrothermally altered rocks from the Pindos Ophiolite, Greece E. Valsami-Jones and J.R. Cann Fluid transfer in anorthosites and related rocks from Rogaland (Southwest Norway): Evidence from stable isotopes E. Wilmart, F. Pineau, A. Réjou-Michel and J.C. Duchesne The importance of late- and post-orogenic crustal growth in the early Proterozoic: evidence from Sm-Nd isotopic studies of igneous rocks in the Makkovik Province, Canada A. Kerr and B.J. Fryer Early Archaean component (> 3.5 Ga) within a 3.05 Ga orthogneiss from northern Nigeria: U-Pb zircon evidence O. Bruguier, S. Dada and J.R. Lancelot Cenozoic accumulation history of a Pacific ferromanganese crust G.M. McMurtry, D.L. VonderHaar, A. Eisenhauer, J.J. Mahoney and H.-W. Yeh Direct evidence for the distribution and occurrence of hydrothermal activity between 27°N-30°N on the Mid-Atlantic Ridge B.J. Murton, G. Klinkhammer, K. Becker, A. Briais, D. Edge, N. Hayward, N. Millard, I. Mitchell, I. Rouse, M. Rudnicki, K. Sayanagi, H. Sloan and L. Parson Hydrothermal lead transfer from mantle to continental crust: the role of metalliferous sediments B. Peucker-Ehrenbrink, A.W. Hofmann and S.R. Hart The Matuyama—Brunhes and Upper Jaramillo transitions recorded in a loess section at Weinan, north-central China R. Zhu, C. Laj and A. Mazaud Magnetostratigraphy of the Willwood Formation, Bighorn Basin, Wyoming: new constraints on the location of Paleocene/ Eocene boundary L. Tauxe, J. Gee, Y. Gallet, T. Pick and T. Bown Magnetostratigraphy of the Mayerling section (Austria) and Erenkolu Mezarlik (Turkey) section: Improvement of the Carnian (late Triassic) magnetic polarity time scale Y. Gallet, J. Besse, L. Krystyn, H. Théveniaut and J. Marcoux Palaeomagnetism of the Balantak ophiolite, Sulawesi B. Mubroto, J.C. Briden, E. McClelland and R. Hall Evidence for seafloor spreading in the Laxmi Basin, northeastern Arabian Sea G.C. Bhattacharya, A.K. Chaubey, G.P.S. Murty, K. Srinivas, K.V.L.N.S. Sarma, V. Subrahmanyam and K:S. Krishna The role of mantle-depletion and melt-retention buoyancy in spreading-center segmentation K. Jha, E.M. Parmentier and J. Phipps Morgan Variations in magma source regions during large-scale continental extension, Death Valley region, western United States Y. Asmerom, S.B. Jacobsen and B.P. Wernicke The potential influence of radiative heat transfer on the formation of megaplumes in the lower mantle C. Matyska, J. Moser and D.A. Yuen Can sharp seismic discontinuities be caused by non-equilibrium phase transformations? V.S. Solomatov and D.J. Stevenson A study of the stability of anorthite in the PT conditions of Earth’s transition zone L. Gautron and M. Madon Seismic wide-angle study of accreted Proterozoic crust in southeastern Wyoming K. Gohl and S.B. Smithson 488 Contents Volume / Earth and Planetary Science Letters 125 (1994) 487-488 Thermometrically inferred cooling rates from the Plattengneis, Koralm region, Eastern Alps K. Ehlers, K. Stiiwe, R. Powell, M. Sandiford and W. Frank Nitrogen isotopic composition of a gas-rich ordinary chondrite, ALHA-77216 N. Sugiura and S. Zashu Cosmic-ray-produced *!Ne in terrestrial quartz: the neon inventory of Sierra Nevada quartz separates S. Niedermann, Th. Graf, J.S. Kim, C.P. Kohl, K. Marti and K. Nishiizumi Injection of mantle type helium into Lake Van (Turkey): the clue for quantifying deep water renewal R. Kipfer, W. Aeschbach-Hertig, H. Baur, M. Hofer, D.M. Imboden and P. Signer Sediment volume and mass beneath the Bay of Bengal J.R. Curray Factors and processes governing the ‘$C content of carbonate in desert soils R. Amundson, Y. Wang, O. Chadwick, S$. Trumbore, L. McFadden, E. McDonald, S. Wells and M. DeNiro Shock experiments on pre-heated a- and B-quartz: I. Optical and density data F. Langenhorst and A. Deutsch Origin and development of textures and fabrics in basal ice at Summit, Central Greenland J.-L. Tison, T. Thorsteinsson, R.D. Lorrain and J. Kipfstuhl The Azores triple junction evolution since 10 Ma from an aeromagnetic survey of the Mid-Atlantic Ridge J. Freire Luis, J.M. Miranda, A. Galdeano, P. Patriat, J.C. Rossignol and L.A. Mendes Victor Spatial and temporal reconstructions of changes in the Asian palaeomonsoon: A new mineral magnetic approach B.A. Maher, R. Thompson and L.P. Zhou Discussion Comment on ‘Planar lamellar substructures in quartz’ by J.B. Lyons, C.B. Officer, P.-E. Borella and R. Lahodynsky W.U. Reimold Reply to comment on: ‘Planar lamellar substructures in quartz’ J.B. Lyons and C.B. Officer NIE ONIN Oo 5. 6 Swi'e eck SA Sw Dw 4 6S bob ke WS She he eee Neate eee eee ee crate ere ee ee Contents Volume 125