Pegmatites and their country rocks in the central european variscides

Aplites and pegmatites can be correlated with their country rocks using the temporal, the compositional/chemical and physical relationships. The emplacement of pegmatitic rocks began during the early Paleozoic (470–440 Ma) which are encountered as metapegmatites in nappe units in the Bohemian Massif, proper, and in the Ötztal Massif within the Alpine Mts. Range. At the end of the MP-HT metamorphism around 370 Ma pegmatoids came into existence in the allochthonous units. From the core to the margin near the collision zone the granites and the pegmatites get younger. The belong to the Variscan heat event, but a close-up view of some of the pegmatites bear witness of an older cooling age of the muscovite from the HPPP pegmatite than the whole-rock age of the nearby Flossenbürg granite. The pegmatite show different ages as the major-rock-forming silicates and rare-element minerals, e.g. columbite are considered. Considering the element assemblage of the pegmatites and aplites in the Hagendorf-Pleystein-Pegmatite Province reveals that the element has not been derived from one source only. Intracrustal sources may be claimed for Li, F, U, Sn, B, P, As and Mn. Niobium, beryllium and bismuth (?) are of subcrustal derivation. In addition, there are subcrustal - intermediate repositories as it is the case with the Zn, REE and Y. Apart from the granitic intrusive rocks and metamorphic rocks, another group of subcrustal magmatic rocks, (meta)-lamprophyres, has not been drawn the attention to, which they deserve. If the fractionation and zonation in a pegmatite field or province is investigated and an attempt is made to compare these individual pegmatites and aplites with a nearby granite some critical points have to be considered.