Variscan granitoids related to shear zones and faults: examples from the Central Sudetes (Bohemian Massif) and the Middle Odra Fault Zone

摘要: The granitoid intrusions of the Central Sudetes (CS) and Middle Odra Fault Zone (MOFZ), NE part Bohemian Massif, are both spatially temporally related to large-scale shear zones faults (including possible terrane boundaries) that provided effective channels for melt migration. Summarizing common features CS MOFZ granitoids, we have delineated a set characteristics fault-related zone-related granitoids: (1) they mainly generated by partial melting crustal sources, with variable contribution (or no contribution) mantle materials; (2) sheet-like, steeply inclined, narrow rather small emplaced within at mid-crustal level (c. 20 km depth), whereas larger, flat-lying plutons intrude into upper crust, outside or above these zones; (3) magmatic foliation lineation in granitoids deeper, sheet-like concordant those surrounding metamorphic rocks, suggesting solidification was coeval deformation instead, shallower larger dome-like reflects magma flow; (4) ductile, transcurrent movements along postdate medium-pressure regional metamorphism accompanied an increase local thermal gradient, as documented crystallization cordierite, andalusite sillimanite; (5) gradient precedes emplacement their concomitant influence on country rocks. final stages tectonothermal activity good-time markers evolutionary path.