Structural Geology and Tectonics

5.

Shear Zones and Mylonites

5.1.

Shear Zone Characteristics

5.1.1.

Definition and Recognition

5.1.2.

Shear Zone Geometry

5.1.3.

Brittle-Ductile Transition

5.2.

Mylonites and Mylonitic Rocks

5.2.1.

Classification of Mylonites

5.2.1.1.

5.2.1.2.

5.2.1.3.

5.2.2.

Microstructural Features

5.2.3.

Deformation Mechanisms

5.3.

Kinematic Indicators in Shear Zones

5.3.1.

Asymmetric Porphyroclasts

5.3.1.1.

Sigma-Type Porphyroclasts

5.3.1.2.

Delta-Type Porphyroclasts

5.3.2.

5.3.3.

5.3.4.

Asymmetric Folds

5.3.5.

5.4.

Shear Zone Evolution

5.4.1.

Nucleation and Development

5.4.2.

Strain Localization

5.4.3.

Fluid Role in Shear Zones

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4. Ductile Structures and Folding

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6. Kinematic and Dynamic Analysis