Geochemistry, Geophysics, Geosystems

    1. You have free access to this content
      Alteration at the ultramafic-hosted Logatchev hydrothermal field: Constraints from trace element and Sr-O isotope data

      N. Augustin, H. Paulick, K. S. Lackschewitz, A. Eisenhauer, D. Garbe-Schönberg, T. Kuhn, R. Botz and M. Schmidt

      Version of Record online: 17 MAR 2012 | DOI: 10.1029/2011GC003903

      Key Points

      • Serpentinization Logatchev hydrothermal field
      • Controls of geochemical budget in a hydrothermal system
      • Fluid/rock and melt/rock interaction at the MAR
    2. You have free access to this content
      Abyssal hill characterization at the ultraslow spreading Southwest Indian Ridge

      Heather Sloan, Daniel Sauter, John A. Goff and Mathilde Cannat

      Version of Record online: 4 FEB 2012 | DOI: 10.1029/2011GC003850

      Key Points

      • Statistical analysis of bathymetry and gravity data from Southwest Indian Ridge
      • Characterization of ultraslow abyssal hill morphology
      • Relationship of abyssal hill morphology to mantle temperature
    3. You have free access to this content
      Geochemistry of vent fluid particles formed during initial hydrothermal fluid–seawater mixing along the Mid-Atlantic Ridge

      Verena Klevenz, Wolfgang Bach, Katja Schmidt, Michael Hentscher, Andrea Koschinsky and Sven Petersen

      Version of Record online: 22 OCT 2011 | DOI: 10.1029/2011GC003704

      Key Points

      • Particle formation is influenced by fluid chemistry and fluid dilution
      • There are other factors than thermodynamics influencing particle formation
    4. You have free access to this content
      In situ measurements of hydrogen sulfide, oxygen, and temperature in diffuse fluids of an ultramafic-hosted hydrothermal vent field (Logatchev, 14°45′N, Mid-Atlantic Ridge): Implications for chemosymbiotic bathymodiolin mussels

      Frank U. Zielinski, Hans-Hermann Gennerich, Christian Borowski, Frank Wenzhöfer and Nicole Dubilier

      Version of Record online: 16 SEP 2011 | DOI: 10.1029/2011GC003632

      Key Points

      • Sulfide and oxygen co-occur simultaneously over bathymodiolin mussel beds
      • Temperature maxima are concurrent with sulfide maxima and oxygen minima
      • Long-term measurements show mussels are neither oxygen nor sulfide limited
    5. You have free access to this content
      Deciphering the ocean bottom pressure variation in the Logatchev hydrothermal field at the eastern flank of the Mid-Atlantic Ridge

      Hans-Hermann Gennerich and Heinrich Villinger

      Version of Record online: 9 JUL 2011 | DOI: 10.1029/2010GC003441

      Key Points

      • Ocean bottom pressure from Logatchev hydrothermal field at MAR is analyzed
      • Medium-term variations are dominated by variations of oceanic origin
      • High-frequency variations dominated by surface wave interaction and earthquakes
    6. You have free access to this content
      Crustal thickness anomalies in the North Atlantic Ocean basin from gravity analysis

      Tingting Wang, Jian Lin, Brian Tucholke and Yongshun John Chen

      Version of Record online: 31 MAR 2011 | DOI: 10.1029/2010GC003402

      Key Points

      • Gravity-derived crustal thicknesses were calculated for the North Atlantic
    7. You have free access to this content
      Fossil clams from a serpentinite-hosted sedimented vent field near the active smoker complex Rainbow, MAR, 36°13′N: Insight into the biogeography of vent fauna

      Franck Lartaud, Marc de Rafelis, Graham Oliver, Elena Krylova, Jérôme Dyment, Benoît Ildefonse, Remy Thibaud, Pascal Gente, Eva Hoisé, Anne-Leïla Meistertzheim, Yves Fouquet, Françoise Gaill and Nadine Le Bris

      Version of Record online: 18 AUG 2010 | DOI: 10.1029/2010GC003079