Abstract
lithospheric mantle. Overall, the magmatic succession is more Extensional collapse of the Betic–Alboran Domain in the Miocene consistent with a geodynamic model involving convective removal of was accompanied by several discrete episodes of magmatism which the majority of the lithospheric mantle than with models invoking provide insights into the relationships between the thermal and wholesale delamination at the Moho, slab detachment or slab rollmechanical state of the lithosphere during late orogenesis. The back. tholeiitic Malaga dykes, emplaced at ~30–27 Ma, have flat rare earth element (REE) patterns and low Sr/Sr and high Nd/ Nd indicative of shallow decompression melting (5–15%) within the asthenosphere following removal of lithospheric mantle. Calcalkaline magmas, erupted between 15 and 6 Ma, have negative
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