Note:  Do not rely on this information. It is very old.


Lamination, the division of a rock into thin leaf-like layers, or lamina, having the same mineral composition and parallel, to the stratification. The structure is characteristic of shale, and, as most of the clayey rocks of great geological age are shaley, it may be in these cases due to the vertical pressure of superincumbent rocks.

“Even though I walk through the darkest valley, I will fear no evil, for you are with me; your rod and your staff, they comfort me.”
Psalm 23:4