EGU General Assembly 2008
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  Oral Programme - IS71 - GMPV05/GD6/GD7 Mid-ocean ridges: interaction of structure, geodynamics, magmatism and hydrothermal circulation

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Convener: Koepke, J.
Co-Convener: Ceuleneer, G., Morris, A., Früh-Green, G., Pressling, N., McCaig, A., Delacour, A.
Co-Sponsorship:

Monday, 14 April 2008

Lecture Room: Lecture Room 19

Chairperson: MORIS, A.; KOEPKE, J.

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8:30 - 8:45
EGU2008-A-05762;  IS71 - GMPV05/GD6/GD7-1MO1O-001
Python, M.; Ceuleneer, G.; Arai, S.
Evolution of the geodynamic context of the Oman ophiolite deduced from the distribution of orthopyroxenite dykes in mantle peridotites (solicited)

8:45 - 9:00
EGU2008-A-02077;  IS71 - GMPV05/GD6/GD7-1MO1O-002
Rollinson, H
MORB and boninitic melts parental to mantle chromitites in a single section through the northern Oman ophiolite

9:00 - 9:15
EGU2008-A-06065;  IS71 - GMPV05/GD6/GD7-1MO1O-003
Arai, S.; Suzuki, K.; Okamura, H.
Decoupled modal and mineral chemical variations of uppermost mantle peridotites beneath a spreading center: an example from Wadi Rajmi of the northern Oman ophiolite (solicited)

9:15 - 9:30
EGU2008-A-08830;  IS71 - GMPV05/GD6/GD7-1MO1O-004
Dziony, W.; Koepke, J.; Holtz, F.
Downhole evolution of mineral phases in drilled lavas and dikes from EPR crust (IODP Site 1256, Equatorial Pacific)

9:30 - 9:45
EGU2008-A-05981;  IS71 - GMPV05/GD6/GD7-1MO1O-005
Duggen, S; Hoernle, K; Hauff, F; Park, SH; Geldmacher, J
Pb (double spike)-Nd-isotopic variation of ~15 Ma oceanic crust basalts drilled at IODP Site 1256 in the Eastern Pacific: Constraints on mantle processes during a phase of superfast spreading at the East Pacific Rise and the timing of subsequent alteration

9:45 - 10:00
EGU2008-A-05803;  IS71 - GMPV05/GD6/GD7-1MO1O-006
Hayman, N.W.; Karson, J.A.
The role of brittle deformation during fast-to-superfast seafloor spreading inferred from tectonic windows into East Pacific Rise-spread crust (solicited)

10:00
COFFEE BREAK

Chairperson: PRESSLING, N.

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10:30 - 10:45
EGU2008-A-05143;  IS71 - GMPV05/GD6/GD7-1MO2O-001
Escartin, J.; Smith, D. K.; Cann, J.; Schouten, H.
Role of detachment faulting in lithospheric accretion along slow–spreading ridges (MAR 12-35°N) (solicited)

10:45 - 11:00
EGU2008-A-04988;  IS71 - GMPV05/GD6/GD7-1MO2O-002
Cann, J.R.; Smith, D.K.; Escartin, J.; Schouten, H.
Tectonic reinterpretation of a section of the Mid-Atlantic Ridge south of the Kane fracture zone

11:00 - 11:15
EGU2008-A-08221;  IS71 - GMPV05/GD6/GD7-1MO2O-003
Schouten, H.; Smith, D. K.; Cann, J. R.; Escartin, J.
Flexural rotation of normal faults and the formation of oceanic core complexes and abyssal hill topography

11:15 - 11:30
EGU2008-A-05753;  IS71 - GMPV05/GD6/GD7-1MO2O-004
Miranda, E.; Dilek, Y.
Oceanic detachment faulting in modern oceanic lithosphere and in ophiolites: implications for the mode of extensional tectonics in seafloor spreading environments

11:30 - 11:45
EGU2008-A-07529;  IS71 - GMPV05/GD6/GD7-1MO2O-005
Morris, A.; Gee, J. S.; John, B. E.; MacLeod, C. J.; Pressling, N.
Palaeomagnetic evidence for tectonic rotation during the evolution of the Atlantis Massif oceanic core complex (IODP Expedition 304/305, Mid Atlantic Ridge, 30°N)

11:45 - 12:00
EGU2008-A-05366;  IS71 - GMPV05/GD6/GD7-1MO2O-006
Dusunur, D.; Cannat, M.; Escartin, J.
Thermal Structure of Lucky Strike Segment, Mid-Atlantic Ridge: indications from microearthquakes and thermal modeling

12:00
LUNCH BREAK

Chairperson: DELACOUR, A.

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13:30 - 13:45
EGU2008-A-01543;  IS71 - GMPV05/GD6/GD7-1MO3O-001
Reves-Sohn, R.
Hydrothermal circulation on the active detachment fault at the TAG segment of the Mid-Atlantic Ridge (26N) (solicited)

13:45 - 14:00
EGU2008-A-02194;  IS71 - GMPV05/GD6/GD7-1MO3O-002
Koschinsky, A.; Garbe-Schönberg, D.; Hach, P.; Klevenz, V.; Schmidt, K.
Temporal Evolution of superhot hydrothermal Fluids in the young post-eruptive hydrothermal System at 5°S, Mid-Atlantic Ridge (solicited)

14:00 - 14:15
EGU2008-A-06258;  IS71 - GMPV05/GD6/GD7-1MO3O-003
Dini, A.; Boschi, C.; Früh-Green , G.L.; Zandomeneghi , G.; Kelley, D.S.; Meier, B.H.
Boron isotope systematic of marine hydrothermal fluids: new insights from the Lost City Hydrothermal System (MAR 30°N)

14:15 - 14:30
EGU2008-A-06229;  IS71 - GMPV05/GD6/GD7-1MO3O-004
Costa, F; Coogan, L; Chakraborty, S
The time scales of magma mixing and mingling at mid-ocean ridges

14:30 - 14:45
EGU2008-A-11760;  IS71 - GMPV05/GD6/GD7-1MO3O-005
Lewin, É.; Chauvel, C.; Carpentier, M.; Arndt, N.T.
Role of recycled oceanic basalt and sediment in generating the long-lived isotopic mantle array (cancelled)

14:45 - 15:00
EGU2008-A-08984;  IS71 - GMPV05/GD6/GD7-1MO3O-006
Ferreira, P.; Murton, B.; Dixon, J.; Boulter, C.
Melt supply and magmatic evolution at a large central MOR volcano located in the Lucky Strike Segment

15:00
END OF SESSION




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