Anisotropy. Vocabulary 1 Isotropy ahy-saht-trah-pee ahy-so-troh-pee Isotropic ahy-suh-trahp-ik ahy-so-troh-pik.

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Presentation transcript:

Anisotropy

Vocabulary 1 Isotropy ahy-saht-trah-pee ahy-so-troh-pee Isotropic ahy-suh-trahp-ik ahy-so-troh-pik

Vocabulary 2 Anisotropy an-ahy-saht-trah-pee an-ahy-so-troh-pee Anisotropic an-ahy-suh-trahp-ik an-ahy-so-troh-pik

Isotropy vs anisotropy

Some Minerals

Generalization

Isotropic Constitutive Equation

Basic Types of Anisotropy Transverse Isotropy Azimuthal anisotropy Composite (cracks)‏

Causes of Anisotropy Lattice Preferred Orientation (LPO)‏ –Alignment of mineral grains Shape Preferred Orientation (SPO)‏ –Alignment of heterogenieties Cracks Melt lenses

Transverse Isotropy

Transverse Isotropy Love – Rayleigh Discrepancy

“Azimuthal” anisotropy: like transverse isotropy on its side Azimuthal Anisotropy

McNamara, van Keken, and Karato [2002] D″ Anisotropy Lattice-Preferred Orientation (LPO)? Shape-Preferred Orientation (SPO)? Result of a Chemical Boundary Layer? Related to Slabs?