Projects funded from 2005-2007 in the framework of the DFG-Priority Program 1144 "From Mantle to Ocean: Energy-, Material- and Life-cycles at Spreading Axes"

• Geobiological coupling between hydrothermal vent fluids and symbiotic primary producers at spreading axes.
  Responsible: Nicole Dubilier - Max Planck Institute of Marine Microbiology, Bremen

• Numerical modeling of mantle flow, melt migration, and MORB compositions.
  Responsible: Matthias Hort, Geophysik, Uni Hamburg

• Low pressure differentiation of basalts at the Mid-Atlantic Ridge near Ascension - Constraints from experiments at controlled volatile and oxygen fugacities.
  Responsible: François Holtz and Jürgen Koepke, Institute für Mineralogie, Universität Hannover

• Hydrothermal Fluids at the Mid-Atlantic Ridge (15°N and 4-11°S) as Media for the Transport of Energy and Mass from the Crust into the Hydro- and Biosphere.
  Responsible: Andrea Koschinsky, International University Bremen and Dieter Garbe-Schönberg, Universität Kiel

• High- and low-temperature alteration of ultramafic oceanic crust: Mineralogy, geochemistry and isotope characteristics of hydrothermal systems at the Mid Atlantic Ridge between 14° and 15°N.
  Responsible: K.S. Lackschewitz, C.W. Devey and A. Eisenhauer, IFM-GEOMAR Leibniz-Institut für Meereswissenschaft, Kiel

• The third dimension of the ultramafic-hosted Logatchev-1 hydrothermal field: sulfide formation, evolution, and fluid flow in the subseafloor.
  Responsible: Sven Petersen, IFM-GEOMAR Leibniz-Institut für Meereswissenschaft, Kiel

• Primordial helium and vertical mixing at the Mid-Atlantic Ridge, 2°–11°S.
  Responsible: Monika Rhein, Institut für Umweltphysik, Universität Bremen

• Geophysical Studies near the Ascension Transform: Evolution of Ridge Segmentation and Crustal Structure - Auswertung.
  Responsible: Timothy John Reston, Jörg Bialas and Ingo Grevemeyer, IFM-GEOMAR Leibniz-Institut für Meereswissenschaft, Kiel

• Gas chemistry and carbon cycling at hydrothermal systems along the Mid-Atlantic Ridge: time- and space-referenced biogeochemical and isotopic investigations.
  Responsible: Dr. Richard Seifert, Institut für Biogeochemie und Meereschemie, Hamburg

• Logatchev Longterm Hydrothermal Field Environmental Monitoring.
  Responsible: Heinrich Villinger, Marcus Fabian and Christoph Waldmann, Fachbereich Geowissenschaften, Universität Bremen

• In-situ determination of the spatial and temporal variation of elements and energy in hydrothermal fluids and associated microbial activity.
  Responsible: Frank Wenzhöfer, MPI-Bremen

• Opaque phase petrology and geochemical modeling as a guide to abiotic organic synthesis in the Mid-Atlantic Ridge 15ºN area.
  Responsible: Wolfgang Bach, Universität Bremen

• Metagenomic studies of the diversity and function of chemosynthetic microbial communities at oceanic spreading zones.
  Responsible: Anke Meyerdierks, MPI-Bremen

• Sulphur isotopic investigation of dissolved and solid sulphur phases in fluids, mineral precipitates, sediments and rock samples from the Mid-Atlantic Ridge.
  Responsible: Harald Strauss, Universität Münster

• Passive electromagnetical and seismological measurements to study the deep melt structure beneath the mid-Atlantic ridge (MAR).
  Responsible: Torsten Dahm, Institut für Geophysik, Universität Hamburg and Marion Jegen, IFM-GEOMAR Leibniz-Institut für Meereswissenschaft, Kiel

• The geology and structure of the Mid-Atlantic Ridge near Ascension Island.
  Responsible: Colin W. Devey, IFM-GEOMAR Leibniz-Institut für Meereswissenschaft, Kiel

• Coordination of the Priority Program 1144 “From the mantle to the ocean”.
  Responsible: Colin W. Devey, IFM-GEOMAR Leibniz-Institut für Meereswissenschaft, Kiel

• Methane transport to the ocean from the Mid-Atlantic Ridge, 7°S to 11°S.
  Responsible: Robin Keir and Gregor Rehder, IFM-GEOMAR Leibniz-Institut für Meereswissenschaft, Kiel

• High resolution volcanology and geochemistry of mid ocean ridge segments flanking the 9°40’S melt anomaly and the Ascension hot spot.
  Responsible: Carsten Münker, Universität Münster and Holger Paulick, Universität Bonn

• The Role of High- and Low-Temperature Alteration of Oceanic Crust on the marine Calcium Budget.
  Responsible: Anton Eisenhauer, Folkmar Hauff and Klas S. Lackschewitz, IFM-GEOMAR Leibniz-Institut für Meereswissenschaft, Kiel

• Temporal evolution of hydrothermal systems at the Mid-Atlantic Ridge
  Responsible: Jan Scholten and P. Stoffers, Universität Kiel, Anton Eisenhauer, IFM-GEOMAR Leibniz-Institut für Meereswissenschaft, Kiel

• U-Th-Ra disequilibria in basalts from the Mid-Atlantic Ridge 6-11°S: Constraints on melting, mixing and time-scales of magmatic processes.
  Responsible: Karsten Haase, Universität Kiel and Folkmar Hauff, IFM-GEOMAR Leibniz-Institut für Meereswissenschaft, Kiel