Figure F31. Anisotropy of magnetic susceptibility vs. depth. A. Eigenvalues. Stars = very low anisotropy zones, circles = minimum eigenvalue, triangles = intermediate eigenvalue, squares = maximum eigenvalue. Separation of minimum and maximum eigenvalues is related to degree of anisotropy, and the position of the intermediate relative to the other two is an indication of magnetic fabric (see the **“Methods”** chapter) (e.g., if the triangle is quite close to the square, the fabric is oblate). B. Inclination of V_{3} eigenvector. C. Bulk susceptibility (χ).

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