Blackrock (geology)
Encyclopedia
Blackrock is a type of limestone
, with its name originating from a place in Somerset
where it occurs. It is not always necessarily black, often a dark grey color.
Limestone
Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate . Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera....
, with its name originating from a place in Somerset
Somerset
The ceremonial and non-metropolitan county of Somerset in South West England borders Bristol and Gloucestershire to the north, Wiltshire to the east, Dorset to the south-east, and Devon to the south-west. It is partly bounded to the north and west by the Bristol Channel and the estuary of the...
where it occurs. It is not always necessarily black, often a dark grey color.