New tomographic images of the Hellenic subduction zone demonstrate slab penetration in the Aegean Upper Mantle to depths of at least 600 km. Beneath Greece the lower part of the slab appears to be detached at a depth of about 200 km whereas it still seems to be unruptured beneath the southern Aegean. Schematically we derive minimum time estimates for the duration of the Hellenic subduction zone that range from 26 to 40 Ma. This is considerably longer than earlier estimates which vary between 5 and about 13 Ma.

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DEFORMATION OF OCEANIC LITHOSPHERE 15 2.1 Gravitational stability of oceanic IS li thosphere 2.2 Forces acting on the lithosphere with 17 implications for the stress distribution 2.3 Lithospheric bending and rheology 28 2.3.1 Bending of a uniform elastic plate with a hydrostatic restoring force 2.3.2 Bending of an elastic-perfectly plastic plate 2.3.3 The depth-dependent rheology ANALYSIS OF THE STATE OF STRESS AT PASSIVE MARGINS 3.1 One dimensional bending of an infinite uniform elastic thin plate due to an instantaneously applied triangular sediment wedge: analytical solutions 3.2 Numerical models of the state of stress at passive margins 3.

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