Boudinage
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Boudinage is a geological term for structures formed by extension, where a rigid tabular body such as hornfels, is stretched and deformed amidst less competent surroundings. The competent bed begins t
Small-scale boudinage
Boudinaged quartz vein within blueschist, Samos, Greece.
Boudinage in Greenland near Kangerlussuaq
Boudinaged quartz vein in shear foliation, Starlight Pit, Fortnum Gold Mine, Western Australia.
Vein (geology)
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In geology, a vein is a distinct sheetlike body of crystallized minerals within a rock. Veins form when mineral constituents carried by an aqueous solution within the rock mass are deposited through p
Boudinage
…planar fracturing into rectangular fragments or by necking or tapering into elongate depressions and swells. 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. This causes the resulting…
White veins in dark rock at Imperia, Italy
A quartz vein, prominent from the surrounding weathered rock at Cape Jervis, South Australia
In situ gold-bearing vein (in brown) at the Toi gold mine, Japan.