Concept of fabric: The geometric arrangement of component features a ( b )in rock, seen on a h Long axes are not paral-ILong axes are aligned scale large enoug lel to one another with one another to include many samples of each feature Basic categories of fabrics Planar fabric aa random fabric Linear fabric and the size h b a pr referred and elements in one dimension is fabric are parallel to i much longer than that inc A foliation one another b the other two dimensions alineation
Basic categories of fabrics a A random fabric b A preferred fabric c A foliation d A lineation Concept of fabric: The geometric arrangement of component features in rock, seen on a scale large enough to include many samples of each feature. Planar fabric and elements are parallel to one another Linear fabric and the size in one dimension is much longer than that in the other two dimensions Long axes are aligned with one another Long axes are not parallel to one another (a) (b)
FABRICS:“ PENETRATIVE’ VERSUS“ SPACED Penetrative fabric Pervasive, affecting all parts of the rock Spaced fabric Non-penetrative, occur at intervals, separated by unaffected rock. Non-penetrative cleavage is often termed spaced (b) cle savage
FABRICS: ‘PENETRATIVE’ VERSUS ‘SPACED’ Penetrative fabric Pervasive, affecting all parts of the rock Spaced fabric Non-penetrative, occur at intervals, separated by unaffected rock. Non-penetrative cleavage is often termed spaced cleavage