A sedimentary rock composed primarily of calcium carbonate Some 10% to 15% of all sedimentary rocks are limestones Limestone is usually organic, but it may also be inorganic
Sedimentary rock composed of carbonate minerals, especially calcium carbonate Limestone can be created by clastic and non-clastic processes Clastic limestones are formed from the break up and deposition of shells, coral and other marine organisms by wave-action and ocean currents Non-clastic limestones can be formed either as a precipitate or by the lithification of coral reefs, marine organism shells, or marine organism skeletons
An abundant rock of marine and fresh-water sediments; primarily composed of calcite (CaCO₃); it occurs in a variety of forms, both crystalline and amorphous
A sedimentary rock composed of calcium carbonate (calcite), often derived from the shells of organisms
A sedimentary rock rich in calcium carbonate that sometimes serves as a reservoir rock for petroleum
a common sedimentary rock consisting mostly of calcium carbonate, often used as a building material - BACK>>
A rock composed of more than 50% calcium carbonate [CaCO3] Dolomite is a variant that is rich in magnesium Because of its solubility limestone is the most common host rock for caves
A sedimentary rock composed chiefly of calcium carbonate In some cases the calcium carbonate may have been directly precipitated from the sea-water, but much more commonly it is formed from the shells of sea creatures These shells may be whole or broken into fine particles It is not uncommon for water percolating through limestone to cause the calcium carbonate to recrystallise and form limestone which is very hard and in which the finer shell material has been destroyed
a rock that is formed chiefly by accumulation of organic remains (shells or coral), consists mainly of calcium carbonate; frequently contains fossils The primary rock in Mammoth Cave, and the primary rock found in caves worldwide
Limestone is a whitish-coloured rock which is used for building and for making cement. high limestone cliffs The local limestone is very porous. a type of rock that contains calcium (LIME2 + stone). Sedimentary rock composed mainly of calcium carbonate (CaCO3), usually in the form of calcite and, less commonly, aragonite. It may contain considerable amounts of magnesium carbonate (dolomite) as well. Most limestones have a granular texture; in many cases, the grains are tiny fragments of fossil animal shells. Much knowledge of the Earth's history has been derived from the study of fossils embedded in limestone and other carbonate rocks. Limestone is used as a soil conditioner, in the manufacture of glass, and in agriculture. Ornamental varieties are used for flooring, exterior and interior facings of buildings, and monuments
A sedimentary rock consisting chiefly of the mineral calcite (calcium carbonate)
A sedimentary rock composed primarily of calcite The calcite may be in the form of crystals, fossil fragments, or other fragments such as pellets and oolites