Boudinage

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.

[2] In lithospheric-scale tectonics, boudinage of strong layers can signify large-scale creep transfer of rock matter.

[2] The study of boudinage can also help provide insight into the forces involved in tectonic deformation of rocks and their strength.

[2] Boudinage can develop in two ways: planar fracturing into rectangular fragments or by necking or tapering into elongate depressions and swells.

[5] Lohest (1909) coined the term boudinage, which is derived from the French word "boudin", meaning blood sausage.