They are interpreted to have been derived from subduction modified lithospheric and asthenospheric mantle sources. |
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The space between this depth and the base of the model is filled with asthenospheric material with a constant density. |
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We interpret them to be partial melts of asthenospheric mantle underlying the Antarctic Peninsula magmatic arc. |
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Uplift would result from resultant mantle upwelling or asthenospheric diapirism. |
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The volcanic arc is caused by physical and chemical interactions between the subducted plate at depth and asthenospheric mantle associated with the overriding plate. |
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