Mantle and Lower Crust Exposed in Oceanic Ridges and in Ophiolites

Contributions to a Specialized Symposium of the VII EUG Meeting, Strasbourg, Spring 1993

Häftad, Engelska, 2010

Av R.L.M Vissers, A. Nicolas, R. L. M. Vissers, Adolphe Nicolas, R. L. M Vissers

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The processes involved in accretion taking place at oceanic ridges are approached here via petrological and structural analysis of oceanic rocks in present-day oceanic ridges, combined with similar studies based on ophiolites, and includes present cases of slow and fast oceanic spreading and inferred analogues in ophiolites. A complementary model study of cyclic oceanic activity reconciles the extreme cases of slowly and rapidly spreading ridges. In essence, based as it is on the analysis of 'real rocks', this book on mantle-crust interactions reinforces the well-known contrast between processes taking place at slow and fast oceanic ridges. Audience: Contains valuable information for scientists interested in the nature and generation of the ocean floor in present-day oceanic ridges and in their ophiolite counterparts.

Produktinformation

Utgivningsdatum2010-12-05
Mått155 x 235 x 13 mm
Vikt347 g
FormatHäftad
SpråkEngelska
SeriePetrology and Structural Geology
Antal sidor216
FörlagSpringer
ISBN9789048145577

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Tillämpad fysik inom Naturvetenskap och teknik
Geovetenskap inom Naturvetenskap och teknik
Geologi inom Naturvetenskap och teknik

I: Marine Studies.- An Ultramafic Lift at the Mid-Atlantic Ridge: Successive Stages of Magmatism in Serpentinized Peridotites from the 15°N Region.- Gabbroic Dikelets in Serpentinized Peridotites from the Mid-Atlantic Ridge at 23°20?N.- Mafic and Ultramafic Intrusions into Upper Mantle Peridotites from Fast Spreading Centers of the Easter Microplate (South East Pacific).- II: Ophiolite Studies.- Plastic Deformation of Gabbros in a Slow-spreading Mesozoic Ridge: Example of the Montgenèvre Ophiolite, Western Alps.- Pre-orogenic High Temperature Shear Zones in an Ophiolite Complex (Bracco Massif, Northern Apennines, Italy).- A Detailed Study of Mantle Flow away from Diapirs in the Oman Ophiolite.- III: Numerical Modelling.- Non Steady-State Thermal Model of Spreading Ridges: Implications for Melt Generation and Mantle Outcrops.