Natural Partial Melting of Spinel Lherzolite |
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| Authors: | MAALOE SVEN; PRINTZLAU IVAN |
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| Institution: | 1 Geologisk Institutt, Universitetet i Bergen Realfagbygget, 5014 Bergen Norway
2 Geologisk Museum, Københavns Universitet Østervoldgade 5 1350 København K, Denmark |
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| Abstract: | Spinel lherzolite nodules from Dreiser Weiher, Germany, containsmall glass bearing microcrystalline blebs that were formedfrom a partial melt. The partial melting occurred during contactanatexis of lherzolite surrounding a deep seated magma chamberin the mantle. The blebs formed from melt drops that were isolatedfrom each other and not from an intergranular film. The resultssuggest that primary magma originates as small melt drops ina lherzolitic matrix. This evidence indicates a limited mobilityof traces of partial melt in the mantle, and suggests that theaccumulation of primary magmas formed at very small degreesof partial melting is unlikely. |
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