Heavitree stone

Heavitree stone is a type of breccia stone, red in colour, of very coarse texture[1] and prone to weathering, which occurs naturally in the parish of Heavitree near the City of Exeter in Devon, England.

Many ancient buildings in Exeter made of Heavitree stone were destroyed by enemy bombing during World War II.

It was first referred to by Sir Henry De La Beche in 1839, as the "Conglomerates of Heavitree".

[5] The stone comprises angular fragments and grains, up to 40mm in diameter, of sandstone, chert, minerals, granite and volcanic rocks, all embedded in a matrix of finer sands and clay.

[3] As the stone was formed from sediment laid down by flash flooding in semi-arid conditions, the stone fragments are not rounded by the wearing of water, as are sedimentary deposits laid down in the sea.