Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3). Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera.

Limestone makes up about 10% of the total volume of all sedimentary rocks. The solubility of limestone in water and weak acid solutions leads to karst landscapes, in which water erodes the limestone over thousands to millions of years. Most cave systems are through limestone bedrock.

Limestone has numerous uses: as a building material, as aggregate for the base of roads, as white pigment or filler in products such as toothpaste or paints, and as a chemical feedstock.

The first geologist to distinguish limestone from dolomite was Belsazar Hacquet in 1778.

Read more about LimestoneDescription, Classification, Limestone Landscape, Uses, Gallery

Other articles related to "limestone":

Lithographic Limestone
... Lithographic limestone is hard limestone that is sufficiently fine-grained, homogeneous and defect free to be used for lithography ... sometimes used for homogeneous fine-grained limestone with a somewhat coarser texture ...
Langcliffe Pot - Geology
... The surface region displays the classical scar morphology of the Great Scar Limestone ... separated by steep scars, and the highest of these, the Middle Limestone bench, is pitted with shakeholes and partially covered by peat, sphagnum bog, clay and sandstone debris ... of the Langcliffe cave system is developed within the Middle Limestone series, with visible horizons of shale, chert and fossil bands ...
Schooler Creek Group - Relationship To Other Units - Subdivisions
... Reference Bocock Formation late Norian aphanitic crystalline and bioclastic limestone 63 metres (210 ft) Pardonet Formation Norian limestone, silty limestone, siltstone, rare shale 137 metres (450 ft) Baldonnel ...
Limestone, Illinois - Demographics
... In 2010, Limestone had a population of 1,598 ... The population was 94.8% non-Hispanic white, 0.5% black, 0.6% Asian, 0.1% non-Hispanic of some other race, 1.6% from two or more races and 2.9% Hispanic or Latino ...
St Mary Star Of The Sea, West Melbourne - Description of The Church - Church Exterior
... Malmesbury bluestone, which is surmounted by a course of splayed blocks of Mount Somers limestone ... Two types of limestone, both of New Zealand origin, have been used for the external dressings Mount Somers limestone for the plinth course, door jambs and window tracery, and Oamaru limestone ... aisle) is articulated by a course of splayed limestone blocks, and the upper level by an arcaded limestone frieze, consisting of a row of trefoil arches supported on squat columns with cushion capitals ...

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