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axial-plane foliation

Foliation (geology) — Foliation is any penetrative planar fabric present in rocks. Foliation is common to rocks affected by regional metamorphic compression typical of orogenic belts. Rocks exhibiting foliation include the typical metamorphic rock sequence of slate,… … Wikipedia
Structural geology — is the study of the three dimensional distribution of rock bodies and their planar or folded surfaces, and their internal fabrics . Structural geology includes features of and overlaps with facets of geomorphology, metamorphism and geotechnical… … Wikipedia
Lineation (geology) — Lineations in structural geology are linear structural features within rocks. There are two types of lineations, intersection lineations and stretching lineations.Intersection lineationsIntersection lineations are imaginary linear structures… … Wikipedia
Cleavage (geology) — This article is about rock cleavage, for cleavage in minerals see Cleavage (crystal) Different ways in which a cleavage can develop in a sedimentary rock. A: original sedimentary rock; B: pencil cleavage; C: diagenetic foliation (parallel to… … Wikipedia
Optical mineralogy — A petrographic microscope, which is an optical microscope fitted with cross polarizing lenses, a conoscopic lens, and compensators (plates of anisotropic materials; gypsum plates and quartz wedges are common), for crystallographic analysis.… … Wikipedia