Microtectonics is the interpretation of small-scale deformation structures in rocks. They are studied by optical microscope and contain abundant information on the history and type of deformation and metamorphism in a rock and are therefore used by most geologists to obtain data for large-scale geological interpretations. This advanced textbook contains a large number of photographs and explanatory drawings, special chapters on related techniques, a chapter on microgauges and a simple, non-mathematical treatment of continuum mechanics with practical examples. Special terms are explained in boxes. This textbook is suited for independent use during optical studies on microstructures as a reference manual and as a manual for short courses.

A Framework of Microtectonic Studies.- Flow and Deformation.- Deformation Mechanisms.- Foliations, Lineations and Lattice Preferred Orientation.- Shear Zones.- Dilatation Sites: Fibrous Veins, Strain Shadows, Strain Fringes and Boudins.- Porphyroblasts and Reaction Rims.- Natural Microgauges.- Special Techniques.- From Sample to Section.- Exercises.