V. Liebetrau et T. Nagler, GEOCHRONOLOGICAL AND GEOCHEMICAL DISCUSSI ON OF THE SO-CALLED FLUELAGRANITIC ASSOCIATION OF THE SILVRETTA NAPPE (GRISONS SWITZERLAND), Schweizerische Mineralogische und Petrographische Mitteilungen, 74(2), 1994, pp. 265-268
The rock-types of the ''Fluelagranatic Association'' can be classified
as metamonzo- to metasyenogranites of S-type character. The different
orthogneiss types bear a volcanic-arc signature. Sm-Nd-model-ages bet
ween 1.2 and 1.7 Ga for several gneiss types indicate special crustal
mixing processes.