How is hornfels formed?


Hornfels is formed when mudstone or shale come in contact with metamorphic rock and a hot igneous body, this represents a heat-altered equivalent of the original rock. This is termed as contact metamorphism. In the formation of hornfels, pressure does not factor.
Q&A Related to "How is hornfels formed?"
They are formed when heat and pressure compacts it together.
Hornfels are contact metamorphic rocks that have been baked and indurated by the heat of
conglomerate. breccia. and shale or siltstone.
Schist is the highest grade metamorphic rock of those listed in the question.
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