Abstract
Several types of coated grains occur within the Middle to Upper Triassic carbonate rocks of the Dolomite Alps. These structures have been mentioned by a number of authors and have been interpreted in various ways. Leonardi (1967) discussed laminated, spherical nodules, which he called Sferocodi, that were presumably formed by encrustations of the alga Sphaerocodium. These nodules are common in biostromal accumulations near the crests of many carbonate buildups in the Dolomites (Leonardi 1967, p. 217). Bosellini and Rossi (1974) provided several excellent illustrations of vadose pisoids from the Dolomites. In their interpretation, the vadoids occur in thin soil horizons and in areas that were subjected to Triassic subaerial exposure.
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References
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© 1983 Springer-Verlag Berlin Heidelberg
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Biddle, K.T. (1983). Girvanella Oncoids from Middle to Upper Triassic Allochthonous Boulders of the Dolomite Alps, Northern Italy. In: Peryt, T.M. (eds) Coated Grains. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-68869-0_34
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DOI: https://doi.org/10.1007/978-3-642-68869-0_34
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