Based on geological data derived from structural investigations in the field a hypothesis of anatexite formation along shear planes by frictional heating is proposed. The hypothesis involves a physico-mathematical model which was tested for different mechanisms and by numerical calculations with different parameters. The formation of frictionites (melt rocks) of small volumes (m "SUP 3" ) requires a depth of deformation in the crust of more than 5 km and a particular tectonic regime and should be possible on the assumption of a stick-slip process in association with a trigger mechanism of source activation. The thermodynamical model employed needs further verification from the mechanical and material points of view. -Authors

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Frischbutter, A.; Hanisch, M. (1991): A model of granitic melt formation by frictional heating on shear planes. Tectonophysics, 194, 1-2, 1-11.