Rock cleavage or slaty cleavage in slates is largely a consequence of abundant, parallel-aligned, very fine-grained mica flakes in the rock. The statement is True.
What is rock cleavage?
- When heat and pressure cause deformation and metamorphism in fine-grained rocks, a sort of layering or planar structure known as cleavage develops.
- Geologists refer to specific forms of deformed recurring layers that occur within a metamorphic rock as foliation, and cleavage is one such type.
- Primary and secondary foliation are the two basic subcategories.
- In fine-grained rocks with planar layering, cleavage is a form of secondary foliation that develops as a result of metamorphic processes such stress, heat, and pressure.
Slaty cleavage is a type of cleavage in which the distance between its layers is 0.01 millimeters or less. Tectonic stress causes slaty cleavage.
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