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Mediterranean (Back-arc extension (Pull down force of subducting slab
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Mediterranean
Back-arc extension
Pull down force of subducting slab
--> results in seaward migration of subduction zone
(& continental crust)
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Back arc deformation
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Stresses caused by:
- Upper plate motion - away/toward trench
--> downgoing slab partly anchored in viscous mantle
- High heat flow
(due to mantle convection in upper mantle wedge)
- Roll back motion of trench
due to pulling effect of slab subducting into mantle
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West Med Reconstruction
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17 Ma
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∴ SE migration Corsica, Sardinia & SZ
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