The Vedrette di Ries (Rieserferner) plutonic complex; petrological and geochemical data bearing on its genesis

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Authors:Bellieni, G.; Peccerillo, A.; Poli, G.
Author Affiliations:Primary:
Univ., Miner. Petrol., Padua, Italy
Volume Title:Contributions to Mineralogy and Petrology
Source:Contributions to Mineralogy and Petrology, 78(2), p.145-156. Publisher: Springer International, Heidelberg-New York, International. ISSN: 0010-7999
Publication Date:1981
Note:In English. 33 refs.; illus. incl. 44 anal., 2 tables, geol. sketch map
Summary:Data on Co, Sc, Rb, Sr, Th, Zr, Ta, Hf, and RE contents are reported for tonalites, granodiorites, granites, and a diorite from the Alpine plutonic complex of Vedrette di Ries in the E Alps. On the basis of heavy RE fractionation, two groups of rocks can be distinguished: one showing higher TbN/YbN values which range between 1.27 and 1.65 and are positively correlated with the differentiation index, and a second group with TbN/YbN < 1 which decrease with differentiation. The data fit the hypothesis that the rock series under study is the product of a two-stage crystal/liquid fractionation process starting from one parent magma of tonalitic or dioritic composition. Major- and trace-element analyses are presented for 5 tonalites, 11 granodiorites, 4 granites, and 1 diorite. [P.Br.]
Subjects:Actinides; Alkali metals; Alkaline earth metals; Cobalt; Differentiation; Diorites; Fractional crystallization; Geochemistry; Granites; Hafnium; Igneous rocks; Magmas; Major elements; Metals; Petrology; Plutonic rocks; Quartz diorites; Rare earths; Rubidium; Scandium; Strontium; Tantalum; Thorium; Trace elements; Zirconium; Europe; Italy; Southern Europe; Trentino-Alto Adige Italy; Crystalline domes; Vedrette di Ries
Coordinates:N465000 N465000 E0120000 E0120000
Abstract Numbers:82M/1458
Record ID:1983021822
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom, Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique
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