Abstract
THE Vallorcine granite is located in the external crystalline massif of the Aiguilles-Rouges (Switzerland). The shape of the granite outcrop is narrow (1 km.) and long (20 km.) with a direction south-south–west-north-north-east. It is situated between the Rhône Valley on the north and the Arve Valley on the south. While its extreme southern part is in French territory, the remaining part is in Swiss territory. This granite is generally porphyritic, and the grain is a medium or fine one. Its texture is massive, with no orientations, and it is composed chiefly of quartz, microcline, biotite and plagioclase (oligoclase-andesine).
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References
Krummenacher, D., Bull. suisse Min. et Pétr., 39, 151 (1959).
Krummenacher, D., Evernden, J. F., Bull. suisse Min. et Pétr., 40/2, 267 (1960).
Ferrara, G., Hirt, B., Marinelli, G., and Tongiorgi, E., Boll. Soc. geol. Ital., 80 (1961).
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CHESSEX, R., DE MONTMOLLIN, F., FERRARA, G. et al. Measurements of the Age of the Vallorcine Granite (Switzerland). Nature 193, 1279 (1962). https://doi.org/10.1038/1931279a0
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DOI: https://doi.org/10.1038/1931279a0
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