The permeability controlled accumulation of primary magma

Autor: Åse Scheie, Sven Maaløe
Rok vydání: 1982
Předmět:
Zdroj: Contributions to Mineralogy and Petrology. 81:350-357
ISSN: 1432-0967
0010-7999
Popis: The initial accumulation of primary magma occurs just after the mantle has become permeable. The accumulation is caused by the compaction of the residuum, which either may be controlled by the rate of creep, or by the rate of flow of the interstitial melt. Experimental results suggest that the rate of compaction is controlled by the permeability, and a model for the accumulation process is worked out on this basis. The compaction causes the formation of a lower compaction boundary and an upper layer of melt. The ascending mantle of plumes and convection currents will form layers of melt situated 20–100 m apart. The type of partial melting for this accumulation is critical melting.
Databáze: OpenAIRE
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