Université de Fribourg

Growth mechanism of snowball garnets from the Lukmanier Pass area (Central Alps, Switzerland): a combined μCT/EPMA/EBSD study

Robyr, Martin ; Vonlanthen, Pierre ; Baumgartner, Lukas P. ; Grobéty, Bernard

In: Terra Nova, 2007, vol. 19, no. 4, p. 240-244

For two decades, considerable efforts have been made to explain the formation of snowball garnets by either the rotational or non-rotational models. On the basis of morphological, chemical and crystallographic evidence, this paper presents new data on snowball garnets showing that the formation of these microstructures can be explained by the combination of the two previously proposed mechanisms...