noun[mass noun] chiefly Geology
The process of splitting into thin sheets or laminae.
- The mylonitic foliation in the hanging wall is subparallel to the thrust plane.
- The data indicate vertical shortening normal to the mylonitic foliation in the granites.
- Fine-grained biotite, muscovite and recrystallized quartz grains define the shear foliation.
Definition of foliation in:
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