What is gritstone?
Q: What is gritstone?
A: Gritstone is a hard, coarse-grained, siliceous sandstone often used for building material.
Q: What were British gritstones used for?
A: British gritstones were used for millstones to mill flour, to grind wood into pulp for paper, and for grindstones to sharpen blades.
Q: What are some characteristics of sandstones with "grit"?
A: Sandstones with "grit" often have angular sand grains and may contain small pebbles or breccia.
Q: What is Millstone Grit?
A: Millstone Grit is the informal term for gritstones found in the Peak District and Pennines of northern England.
Q: When were the sediments that make up Millstone Grit laid down?
A: The sediments that make up Millstone Grit were laid down in the late (upper) Paleozoic era, in the Carboniferous period, in deltaic conditions.
Q: What is the Millstone Grit Group?
A: The Millstone Grit Group is a formal stratigraphic term for the sequence of rocks that make up Millstone Grit.
Q: What is the origin of Millstone Grit?
A: Millstone Grit was formed by sedimentation in deltaic conditions during the late (upper) Paleozoic era, in the Carboniferous period.
