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Convection   |  Paleoreconstruction   |  Deformation   |  Data Visualization

CONVECTION MODELS

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Number of Convection Movies found in the database: 44

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IdPictureGeneral InformationView
87

Subduction model with LVC and LVW - temperature field. The initial thermal structure consists of a 50 Ma old oceanic plate (left side) and a 100 Ma old continental plate. The convergence rate is 5 cm/yr and the continental plate is fixed.

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86

Subduction model with LVC and LVW - viscosity field. The initial thermal structure consists of a 50 Ma old oceanic plate (left side) and a 100 Ma old continental plate. The convergence rate is 5 cm/yr and the continental plate is fixed. The viscosity in the wedge and channel is 20x reduced compared with the asthenosphere. The LVC starts at 20 km depth whereas the LVW starts at 40 km depth and goes down to 300 km depth.

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83

From Flat slab to Steep slab - Temperature: we allow a LVC to develop (in time) between the oceanic plate and the overriding continental plate. This will decouple the two plates reducing the suction force and therefore allowing the sunducting plate to fall into the asthenosphere at steeper angles. Note how the weakening of the base of the continental lithosphere allows hot ashtenospheric material to flow into the developing mantle wedge.

VIEW
82

From Flat slab to Steep slab: we allow a LVC to develop (in time) between the oceanic plate and the overriding continental plate. This will decouple the two plates reducing the suction force and therefore allowing the sunducting plate to fall into the asthenosphere at steeper angles.

VIEW
80

Thermal mantle plume impact with 1 Ga old lithosphere (craton). The plume is 30% hotter than the surrounding mantle. Note how the plume head is "consumed" by the cold top lithosphere.

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