This realignment, known as schistosity, bears no relationship to the original horizontal bedding planes.
2.
The weak, originally-horizontal bedding planes of the quartzite are now vertical, which rules out the stone being in a natural position.
3.
The nature of slate, with its geologically formed horizontal bedding, causes it to fracture along flat lines, and, unlike granite and marble, slate cannot be undercut or sculpted.
4.
It is evident, that what is considered the'central uplift'is in fact nothing more than an eroded outlier of the Gilf, the undisturbed horizontal bedding being clearly visible at all times.
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