Pétrographie sédimentaire des formations molassiques de la région de Bulle à Vevey

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Article

Reference

Pétrographie sédimentaire des formations molassiques de la région de Bulle à Vevey

VERNET, Jean-Pierre

Abstract

Les grès des séries molassiques situées au front des Préalpes bordières entre Bulle et Vevey ont une composition minéralogique particulière et caractéristique. Leur très forte teneur en zircon, tourmaline et rutile(40-60%) les place indiscutablement dans la molasse subalpine.

L'absence du sphène et de la glaucophane, l'apparition de la staurotide au Rupélien seulement sont des caractères propres aux grès de cette région. La rareté de l'épidote est aussi typique de la contrée et permettrait probablement l'établissement d'une stratigraphie locale dans les séries du Chattien supérieur et de l'Aquitanien.

VERNET, Jean-Pierre. Pétrographie sédimentaire des formations molassiques de la région de Bulle à Vevey. Bulletin der Vereinigung schweizerischer Petroleumgeologen und Petroleumingenieure, 1964, vol. 31, p. 25-32

DOI : 10.5169/seals-193330

Available at:

http://archive-ouverte.unige.ch/unige:146037

Disclaimer: layout of this document may differ from the published version.

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Pétrographie sédimentaire des formations molassiques de la région de Bulle à Vevey

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