Definition
The fabric of a rock is the total of all textural and structural features (Whitten and Brooks, 1972). Texture is defined as the relationship between the particles that form a rock, and structure has to do with discontinuities and major inhomogeneities. Both are intrinsic properties of the rock that serve as guides to its origins (Pettijohn and Potter, 1964), as well as providing a basic rationale for the study of mudstone fabrics.
Studying mudstone fabrics
The structural dimension of mudstone fabrics (discontinuities and major inhomogeneities) is best examined in hand specimens (preferably cut and polished surfaces) and in petrographic thin sections (Figure D8). For hand specimens, one starts with visual inspection, followed by closer examination under a binocular microscope. This approach is suitable to study features in the millimeter range, such as small-scale sedimentary structures. Petrographic thin sections should initially be examined at low magnification (binocular...
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Schieber, J. (1978). Depositional fabric of mudstones. In: Sedimentology. Encyclopedia of Earth Science. Springer, Berlin, Heidelberg . https://doi.org/10.1007/3-540-31079-7_63
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