Everything about Gritstone totally explained
Gritstone is a
sedimentary rock composed of coarse sand grains with inclusions of small stones. It is a coarser version of
sandstone. It was laid down in the late (upper)
Paleozoic era, in the
Carboniferous period, in delta conditions.
Gritstone is a
sedimentary rock and frequently shows signs of
cross-bedding or
current bedding.
It is
quarried for building material. British gritstone was used for
millstones to mill flour and
grindstones to sharpen blades, giving rise to its other common name of
millstone grit.
The rock is much loved by English
climbers, among whom it has almost cult status and is often referred to as "God's own rock". The rough surface provides outstanding friction, enabling climbers to stand on or grip the subtlest of features in the rock.
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