A kind of sedimentary rock consisting mainly of calcium carbonate minerals.

Fine-grained rock that comes from shells or reefs. The rock is basically calcium carbonate.

The general name for sedimentary rocks composed essentially of calcium carbonate.

A sedimentary rock made of layers of carbonated sediments (sea life) that thrived in a warm shallow sea. Fossils are often found in this type of rock.

a sedimentary rock made up predominantly of calcite.

A rock made up of calcite (calcium carbonate). Most/all limestones are created by biological action (shell debris but also algal filaments and coatings) but this can be in fresh or sea water.

A sedimentary rock consisting largely or entirely of calcium carbonate. The laminated limestones of Fossil Lake are characteristic of chemically-stratified lakes, and are the result of changes in temperature/pH or photosynthetic activity causing the calcium carbonate to precipitate out of the water.

is abundant in Derbyshire and Yorkshire, and forms the fine cliffs in Cheddar in Somerset, Berry Head in Devon, Anstis Cove and others; indeed most of the south coast of Devon and Cornwall east of Penzance is of this material. Chudleigh Rock and Morewell Rocks on the River Tamar are very striking. West, speaking of this rock in Lancashire, says, "The whiteness and neatness of these rocks take off every idea of horror that might be suggested by their bulk or form." In England it is very rare to find limestone which is a satisfactory material on which to climb.

A sedimentary rock consisting primarily of calcium carbonate. It usually originates through the accumulation of calcerous remains of marine life. As carbon dioxide (C02) easily dissolves limestone, caves are more common in limestone than in any other rock.

A sedimentary rock consisting of at least 50% calcium carbonate (CaCO2) by weight.

A sedimentary rock made of calcium carbonate. In the Knockan Crag area this type of rock is known as Durness limestone after the village on the north coast. It tells us that this part of Scotland was once near the equator since limestone can only form in warm shallow water: there needs to be a certain temperature and lots of light for the chemical reaction that forms calcium carbonate to take place.

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's are sedimentary rocks consisting mainly of calcite (calcium carbonate) and/or dolomite (calcium magnesium carbonate), They are usually formed from fragments of shell, coral and other marine organisms, Some finely grained and compact limestones - for example, oolite - are created from chemical precipitates. Sometimes called greystone, limestones were popular for building because they combined relatively easy workability with good weather resistance, Sulfur oxides in today's acid rain converts limestone to friable gypsum, however

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.

A sedimentary rock formed mainly from carbonate minerals, especially calcite.

a sedimentary rock made chiefly of calcium carbonate, mostly in the form of calcite.

A sedimentary rock composed of calcium carbonate; includes many varieties.

(lime'-stone) A sedimentary rock consisting primarily of the mineral calcite (hexagonal CaCO3) with or without some magnesium carbonate (MgCO3) or dolomite (CaMg(CO3)2). Limestone is the most widely distributed of the carbonate rocks, and is the consolidated equivalent of limy mud, calcareous sand, and/or shell fragments. Clay minerals, quartz, and chalcedony are common impurities.

A rock made from many different minerals. It is used to make glass.

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.

a calcium carbonate, sedimentary rock that often overlies reservoirs of water that roots cannot penetrate unless through cracks

Grey sedimentary rock containing at least 50% calcite (calcium carbonate). It is a soft rock often containing fossils.

any number of differing ores usually containing 50% or more of calcium carbonate, (CaCO3).

Used by the steel industry to remove impurities from the iron made in blast furnaces. Magnesium-containing limestone, called dolomite, is also sometimes used in the purifying process.

A sedimentary rock, comprised of the mineral precipitate calcium carbonate. In Wisconsin, it was sometimes used to make tools, but was most often used to surround hearths.

Rock consisting mainly of calcium carbonate and is both stable and attractive. Available in different surface finishes, it can be used for building columns, facings, trim, etc.

a sedimentary rock consisting chiefly of calcium carbonate (lime).

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 rich in calcium carbonate that sometimes serves as a reservoir rock for petroleum.

Chemical name: Calcium carbonate Chemical formula: CaCO3 See also: Calcium, Chemical Table.

Type of rock found in abundance in southern France (usually white and full of pockets and holds).

A sedimentary rock that is predominantly calcium carbonate (the mineral calcite). Such rocks may result from the activity of calcite-precipitating organisms, but most limestone is probably the result of inorganic chemical precipitation from sea water. Chalk is a form of limestone.

A hard rock containing calcium carbonate that is used as a building material and in the making of glass and cement.

A sedimentary rock consisting mostly of calcium carbonate, usually in the form of limy mud, calcareous sand, and/or fossils.

Sedimentary rock largely consisting of calcite. On a world-wide scale, limestone reservoirs probably contain more oil and gas reserves than all other types of reservoir rock combined.

It is a name given to any sedimentary rock which consists mostly of carbonates, calcite and/or dolomite.

Stone consisting primarily of calcium carbonate. Exoskeletons of many marine organisms contain calcium carbonate. With time, sea floor accumulation, compaction and cementation, these calcite beds become limestone formations.

A sedimentary rock consisting primarily of calcium carbonate (the mineral, calcite). Limestone is generally formed by accumulation, mostly in place or with only short transport, of the shells of marine animals, but it may also form by direct chemical precipitation from solution in hot springs or caves and, in some instances, in the ocean.

Any sedimentary rock composed essentially of calcium carbonate.

sedimentary rock composed of carbonate of lime: a form of calcium carbonate which can be carved on its own or ground up to make plaster when mixed with sand. See also Plaster

A dense rock formed by chemical precipitation of calcium carbonate from solution in water.

A sedimentary rock derived from the shells and skeletons of animals deposited in seas, and consisting mostly of calcium carbonate.

A sedimentary rock that consists primarily of calcium carbonate or calcite. Limestone may be formed by either organic or inorganic processes. Limestone is fossiliferous and represents ancient shell banks or coral reefs.

Produced by sediments that included the shells of ancient marine creatures that were composed of calcite (calcium, carbon, and oxygen). Burial and compression of these sediments formed limestone formations. Limestone is the most common rock in Texas.

Limestone is a compound that contains calcium. Generally used to increase the PH level of the soil

A highly porous rock formed over thousands of years from the compression of shells and the bones of sea animals. Jump to Top

a sedimentary rock often used as a building material, and for the base layer in an asphalt or PCCP paving system, and the major stone component for asphalt materials produced in our region.

a sedimentary rock dominantly composed of calcium carbonate.

rock consisting of mostly calcite and aragonite.

A sedimentary rock formed of calcite that has been produced either by organic or inorganic chemical precipitation.

A sedimentary rock composed largely of calcium carbonate that is used in powdered form to provide calcium, a plant nutrient, and make soil more alkaline.

brittle, sedimentary rock that has many cracks which can fill with water. loam: a fertile rich soil composed of varying amounts of silt, clay, sand, and humus.

is a naturally occurring rock consisting principally of the carbonates of calcium and magnesium, in which the ratio by weight of CaCO3 to MgCO3 is not less than 1.2 to 1.0.

A sedimentary rock composed of calcium carbonate, formed by the accumulation and recrystallization of seashells which have gone through some degree of change so that the shells are not identifiable.

A soil amendment containing calcium; it slowly raises the pH of a soil so it is more alkaline (basic). Dolomitic limestone is the safest form to use. If soil tests indicate adequate magnesium, then calcitic limestone is the safest form to use.

A sedimentary rock formed in aquatic environments from calcium carbonate. Often contains fossil remains.

A sedimentary rock consisting mainly of calcium. Limestone is highly susceptible to erosion by acid rain. Introduction Task Process Information resources Guidance Dr. Bravo Ms. Alarcón Dr. Sosa Dr. Soto Mr. Sanchez

Sedimentary rock of primarily calcite. Often the matrix rock for fossils. Color varible. (3)

any rock or stone whose main constituents are calcium carbonate or calcium and magnesium carbonates.

Limestone is added to soil to increase the pH, but also supplies some plant nutrients. Calcitic limestone is calcium carbonate and is an important source for calcium. Dolomitic limestone contains both calcium and magnesium carbonates, thus supplies two important plant nutrients. Use a soil test to determine the limestone requirement for your soil and crop.

A sedimentary rock, largely calcium carbonate, and usually also containing significant amounts of magnesium carbonate.

A common, naturally occurring form of calcium carbonate of which coral reef structures are made.

A sedimentary rock consisting mainly of calcite deposited by the remains of marine organisms. Metamorphosed limestone is called marble.

rock formed from animal remains, such as bones or shells

A sedimentary rock made mostly of the mineral calcite (calcium carbonate). Limestone is usually formed from shells of once-living organisms or other organic processes, but may also form by inorganic precipitation.

a rock consisting of calcium carbonate and calcium-magnesium carbonate.

A sedimentary rock consisting principally of calcium carbonate. Limestones may be formed by deposits of shell/corals and/or from chemical precipitation in shallow seas.

A sedimentary rock composed of the mineral calcite (CaCO3). This is usually formed in shallow marine waters, the calcite being contributed by the skeletons of marine organisms (Image). One test for calcite is to add dilute hydrochloric acid (or even vinegar) and see if the rock will "fizz."

(see flux) The most common flux, called calcium carbonate (CaCO3) or more commonly "stone". Used as a flux in the Blast Furnace with dolomite ((Ca,Mg)CO3). Limestone also has endothermic properties (soaks up heat) and is charged to the BOF vessel as an effective coolant.

A sedimentary rock composed of calcites and dolomites. Limestone is non-crystalline and possesses uniform composition, texture and structure. Limestone ranges in color from white to gray and cannot be polished. Example: Limestone Crushed

This sedimentary rock composed mostly of the mineral calcite (a crystalline form of natural calcium carbonate). Because it is formed by compacted organic remains, usually of marine origin, shells and fossils can be found in some varieties. It is usually buff or light grey, but other colors can be found. Limestone has a #4 classification on a standard scale of hardness, making it a soft stone, and it can be finely grained. Because of its characteristics, it is not often polished.

the common name for calcium carbonate. Limestone is a sedimentary rock.

a sedimentary rock, chiefly composed of calcium carbonate; formed from the shells of marine animals

A sedimentary rock consisting of the mineral calcium carbonate that was created by precipitation or from the accumulation of the skeletons of sea animals.

sedimentary rock type composed of mostly calcium carbonate, that formed by chemical precipitation from sea water or by accumulation of fossils with carbonate shells.

a non-clastic (non-grained) sedimentary rock consisting chiefly of the mineral calcite (calcium carbonate). Common impurities are chert, clay (mud), or dolomite. If the dolomite content exceeds 50%, the rock is called dolostone.

Natural calcium based stone, often very soft and supplied for flooring with a honed finish, it is usually very porous and requires sealing.

A sedimentary rock composed predominantly of calcium carbonate.

Rock mainly composed of calcium carbonate.

(4) a sedimentary rock consisting largely of calcite (CaCO3). Dolomite, chert and clay are common impurities.

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.

A white or grayish mineral compound used to combat soil acidity and supply calcium for plant growth.

A sedimentary rock consisting chiefly of calcium carbonate primarily in the form of the mineral calcite and with or without magnesium carbonate. It can be formed through either organic or inorganic process. Limestone effervesces freely with any common acid.

a rock consisting wholly or chiefly of calcium carbonate, consolidated by its chemical reaction with impure, mainly acidic water, as in acid-rain..

sedimentary rock, consisting mostly of Calcite, found is locations where prehistoric marine environments once existed. Limestone colors vary depending on composition. Pure Limestone is white. Grey indicates clay impurities. While red is usually colored by iron oxide. Limestone layers are generally thicker than shale layers.

limestone is made up of shells gathered on the floor of the sea and hardened into layers of rock. The sedimentary rock is composed mainly of calcium carbonate.

a rock that is formed chiefly by accumulation of organic remains (as shells or coral), consists mainly of calcium carbonate, is extensively used in building, and yields lime when burned

A sedimentary rock formed principally of calcium carbonate from the shells of marine organisms. May also be formed with marl.

sedimentary rock consisting essentially of calcium carbonate. agma: naturally occurring molten rock, generated within the earth's crust or in the upper mantle and capable of intruding (being thrust into) the earth's crust or penetrating it and erupting through volcanic craters.

A sedimentary rock composed mainly of calcium carbonate (CaCO3), usually as the mineral calcite.

A pale coloured rock which is permeable and stores water.

a calcium-carbonate sedimentary rock that is often made up of shell material of once-living organisms.

A rock composed mainly of calcium carbonate CaCO3. Limestones comprise a large variety of rocks including carbonate muds and oozes, chalks, ooliths and bioclastic limestone. They form in a variety of environments from deep sea (but above the carbonate com... More

Sedimentary rock composed primarily of calcium carbonate. It usually originates through the accumulation of calcareous (limy) remains of marine animals. Because limestone is easily dissolved by carbon dioxide in water, caves are more common in limestone than in any other type of rock. limestone dissolves fastest where the carbon dioxide content is highest at the surface of the water table.

A sedimentary carbonate rock, composed chiefly of calcite, but sometimes containing appreciable dolomite.

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.

Limestone is a sedimentary rock consisting mainly of the shells and bones of animals and plants that lived in ancient seas. It is often very rich in fossils. Chalk is a form of limestone.

a sedimentary, carbonate rock composed almost entirely of calcite. Limestone can be composed of calcite precipitated by marine organisms such as corals (organic limestone) or made up of broken shell fragments and calcite crystals (clastic limestone) or chemically precipitated in warm, shallow seas (evaporite limestone).

Sedimentary rock composing more than half calcium carbonate (CaCO3).

a sedimentary rock, composed of the mineral calcite, formed through the decomposition of marine organisms.

Rock of sedimentary origin compos ed principally of calcite or dolomite or both.

Contains more than 95% calcite (calcium carbonate)

Sedimentary type of rock composed mainly of calcite and/or dolomite, which can be of organic, chemical or detrital origin.

sedimentary rock which composed mostly of calcium carbonate ( calcite).

A sedimentary rock consisting chiefly (more than 50% by weight or by areal percentages under the microscope) of calcium carbonate, primarily in the form of the mineral calcite, and with or without magnesium carbonate; specifically a carbonate sedimentary rock containing more than 95% calcite and less than 5% dolomite

carbonate sedimentary rock composed of more than 50 percent of the mineral calcium carbonate (CaCO3).

a common sedimentary rock consisting mostly of calcium carbonate, often used as a building material - BACK

A bedded, sedimentary deposit consisting chiefly of calcium carbonate.

a sedimentary rock consisting essentially of calcium carbonate.

Formed in shallow seas by sediment compacting with calcium-enriched sea critters (i.e. today's Gulf of Mexico, coral reefs, etc.) Carbonic acid seeps through cracks in limestone, dissolving the calcium and eventually washing out leftover sediment creating caves. Home| BatCentral| ProjectCentral|| Bottom of page

Mineral rock of calcium carbonate.

Formed from sediment laid down in sea water or fresh water. Limestone contains calcite, a mineral made from crushed shells and bones of sea creatures. It is softer than granite and therefore easier to shape into rectangular blocks or carve fine detail.

Material composed mainly of calcium or magnesium carbonate.

type of rock that consists mainly of the mineral calcite.

A sedimentary rock recognized by its visible stria and grey undertones. Common in Ontario.

a light colored, easily cut rock, much used for building

A carbonate rock composed of more than 50%, by weight, of the mineral calcite.

A sedimentary rock composed predominantly of the mineral calcite. Many of the rocks called "marbles" by builders and architects are actually limestones.

A sedimentary rock consisting mainly of the mineral calcite

Rock consisting mainly of calcium carbonate, often composed of the organic remains of sea animals; used as building stone, and as a source of lime. When crystallized by heat and pressure, it becomes marble.

a sedimentary rock made predominantly of calcium carbonate.

Composed mainly of calcium carbonate (CaCO3), it is one of the most common rocks in the state. Like most of the rocks found at the surface in the state, it is a sedimentary rock.

A sedimentary rock composed almost entirely of calcium carbonate (CaCO3);

A sedimentary rock consisting largely of calcium carbonate. May be formed from calcareous skeletal remains.

A sedimentary rock formed from the remains of shelly sea creatures.

Rock of sedimentary origin composed principally of calcite or dolomite or both. Commonly used in gravestones and tomb structures, in some cases considered to be marble.

A sedimentary rock composed mostly of calcium carbonate (CaCO3) and usually some magnesium carbonate (MgCO3).

Limestone is a type os sedimentary rock. Limestone is a white to gray, fine-grained rock made of calcium carbonate. It fizzles when it comes in contact with vinegar or any other acid. Limestone was formed from the remains of ancient seas; it is made mostly of calcite precipitated from living organisms. Coquina is a type of limestone that is mostly made of shells and shell fragment. Dolomite is another type of limestone.

A sedimentary rock composed mainly of calcite (CaCO3). Limestone forms through chemical precipitation in warm, shallow seas, and often contains marine fossils.

a rock consisting mostly of calcite (calcium carbonate), much used for building and in the steel and chemical industries. Limestone yields lime when calcined. Marble is a metamorphosed limestone. [AHDOS

rock made from cemented shells; high in Calcium Carbonate (CaCO3)

A common sedimentary rock consisting mostly of calcium carbonate that was deposited by the remains of marine animals. It is used as a building stone and in the manufacture of lime, carbon dioxide, and cement. Crystalline limestone is called marble.

The term limestone is applied to any sedimentary rock consisting essentially of carbonates. The 2 most important constituents are calcite and dolomite, but small amounts of iron-bearing carbonates might also occur.

Limestone is a sedimentary rock composed largely of the mineral calcite (calcium carbonate: CaCO3). Limestone often contains variable amounts of silica in the form of chert or flint, as well as varying amounts of clay, silt and sand as disseminations, nodules, or layers within the rock. The primary source of the calcite in limestone is most commonly marine organisms.