Geology Reference
In-Depth Information
marble, granite and slate for roofs. Rocks are generally chosen for their
colour and appearance
the quarry at St Bees headland, Cumbria, UK
(a fairly ordinary sandstone), was re-opened temporarily in the 1990s
to provide rock for shipping to New York to repair buildings faced
with sandstone carried by ships as ballast in the 19
th
Century
-
because
of its appearance. Dimension stone must also be resistant to wear, frost
and chemical attack. This can be dif
-
cult to determine from direct
testing, so experience of the long-term performance of a particular
rock from a particular quarry may be the best clue.
