Origin of migmatites by deformation-enhanced melt infiltration of orthogneiss: a new model based on quantitative microstructural analysis

Abstract

A detailed field study reveals a gradual transition from high-grade solid-state banded orthogneiss via stromatic migmatite and schlieren migmatite to irregular, foliation-parallel bodies of nebulitic migmatite within the eastern part of the Gfohl Unit.

Keywords

• crystal size distribution
• melt infiltration
• melt topology
• migmatites
• quantitative textural analysis
• U-Pb zircon
• Bohemian Massif
• continental-crust
• distribution CSD
• magnetic-susceptibility
• anatectic migmatites
• grain-scale
• ductile deformation