Boudinage

Boudinage

Boudinage is a geological term for structures formed by extension, where a rigid tabular body such as a bed of sandstone, is stretched and deformed amidst less competent surroundings. The competent bed begins to break up, forming sausage-shaped boudins.

Boudins are typical features of sheared veins and shear zones where, due to stretching along the shear foliation and shortening perpendicular to this, rigid bodies break up. Ductile deformation conditions also encourage boudinage rather than imbricate fracturing.

In three dimensions, the boudinage may take the form of ribbon-like boudins or chocolate-tablet boudins, depending on the axis and isotropy of extension.

Examples: [http://www.virtualexplorer.com.au/journal/2001/03/urai/ Evolution of the mullions (boudins) of the Eifel-Ardennes] by Prof. Janos Urai.

Etymology
Boudinage derives from the French word "boudin", meaning sausage.

References

Urai, J. L., Spaeth, G., van der Zee, W. & Hilgers, C. 2001. "Evolution of Mullion (Boudin) structures in the Variscan of the Ardennes and Eifel." In: Jessell, M. J. 2001. General Contributions: 2001. Journal of the Virtual Explorer, 3, 1-16.


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  • Boudinage —   [budi naːʒə; zu französisch boudin »Blutwurst«] die, / n, Geologie: Bezeichnung für eine tektonische Verformung von dünnen, kompetenten Gesteinslagen, die in plastischerem (inkompetentem) Gestein eingebettet sind: Unter Druckeinwirkung zerreißt …   Universal-Lexikon

  • boudinage — boudiner [ budine ] v. tr. <conjug. : 1> • 1842; de boudin 1 ♦ Techn. Tordre des écheveaux de fil, de soie. Tordre un fil métallique en spirale (opération du boudinage). 2 ♦ Fam. Serrer, en parlant d un vêtement. Cette robe te boudine.… …   Encyclopédie Universelle

  • boudinage — Cylinder like structures making up a layer of deformed rock. They commonly lie adjacent to each other and are joined by short necks, giving the appearance of a string of sausages (boudin is French for sausage ). The necks may be filled with… …   Universalium

  • Boudinage — Boudins von Marmor (weiß) in Kalksilikat Hornfels Boudinage (nach franz. boudin für Blutwurst) bezeichnet in der Geologie eine bestimmte Art von Gesteinsgefüge. Dieses Gefüge entsteht durch die Zerrung von gebankten Gesteinen, wobei Bänke in… …   Deutsch Wikipedia

  • boudinage — Estructuras cilíndricas que conforman una capa de roca deformada. Comúnmente yacen adyacentes entre sí y están unidas por cuellos cortos, dando la apariencia de una tira de salchichas (boudin significa salchicha en francés). Los cuellos pueden… …   Enciclopedia Universal

  • boudinage — (bou di na j ) s. m. Action de tordre le fil de lin avant de le mettre sur les bobines. ÉTYMOLOGIE    Boudiner …   Dictionnaire de la Langue Française d'Émile Littré

  • Boudinage — Bou|di|na|ge [budi na:ʒə] die; , n <zu fr. boudin »Blut , Weißwurst« u. ↑...age> ↑tektonische Verformung von dünnen Gesteinslagen zu wurstförmigen Körpern, die in plastischerem Gestein eingebettet sind (Geol.) …   Das große Fremdwörterbuch

  • boudinage — bou·di·nage …   English syllables

  • boudinage — |büdən|äzh, äj noun ( s) Etymology: French, from boudin + age : a structure which is sometimes present in metamorphic rocks apparently as a result of tension and in which a competent bed is thinned and thickened so that it resembles in cross… …   Useful english dictionary

  • lampe à double boudinage — lempa su dviguba spirale statusas T sritis radioelektronika atitikmenys: angl. coiled coil lamp vok. Doppelwendellampe, f rus. биспиральная лампа, f pranc. lampe à double boudinage, f …   Radioelektronikos terminų žodynas

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