1. Plural of mylonite; fine-grained metamorphic rocks formed by the intense deformation and grinding of rock material along fault zones or shear zones.
Usage: geology; technical

Examples

• Geologists discovered mylonites along the fault line, indicating past tectonic movement.
• The mylonites in this region show evidence of significant shearing stress.
• These mylonites formed when the continental plates collided millions of years ago.
• The study of mylonites helps scientists understand the deformation history of mountain ranges.
• Thin sections of mylonites reveal the microscopic textures created by intense pressure and heat.