Dictionary of Geotourism

2020 Edition
| Editors: Anze Chen, Young Ng, Erkuang Zhang, Mingzhong Tian

Slaty Cleavage

Reference work entry
DOI: https://doi.org/10.1007/978-981-13-2538-0_2281

Slaty cleavage is a structure that looks like piled wood planks and forms during the deformation and metamorphism of rocks. It occurs in shallow metamorphic rocks and it has different definitions: (1) it is a group of cleavage that often forms due to subsurface stress, and it can be parallel or oblique to the bedding of the existing rock. The cleavage faces are straight and smooth and are often accompanied by small amounts of dynamic metamorphic minerals (e.g., sericite and chlorite); (2) it is a planar structure that forms along the bedding planes of an existing rock due to contact metamorphism.

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