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Limestone: The Alamo Primer Sedimentary Rocks in Devonian. Limestone is a sedimentary rock that is comprised mainly of calcium carbonate (CaCO 3).The majority of the grains within limestones consist of skeletal fragments from marine organisms that have died and settle to the ocean floor.
Limestone is a very common sedimentary rock consisting of calcium carbonate (more than 50%). It is the most common nonsiliciclastic (sandstone and shale are common siliciclastic rocks) sedimentary are rocks that are composed of mostly calcium carbonate (minerals calcite or aragonite). Carbonate rocks where the dominant carbonate is dolomite (calcium magnesium carbonate) are ...
A valuable natural resource, limestone has many uses in construction, agriculture and industry. Limestone quarries can be above ground or underground, and can cover large areas. Environmental hazards from mining operations depend in part on the location, characteristics and extent of .
Limestone is a karstforming rock, which produce landforms that are formed by dissolution, and represents about 10 percent of the world''s land surface. But limestone cannot be mined without impacting the environment.
Limestone has two origins: (1) biogenic precipitation from seawater, the primary agents being limesecreting organisms and foraminifera; and (2) mechanical transport and deposition of preexisting limestones, forming clastic deposits. Travertine, tufa, caliche, chalk, sparite, and micrite are all varieties of limestone.
Limestone mining can pollute water and create sinkholes. When limestone dissolves while it''s still in the ground, caves and gullies form, a natural phenomenon known as karst. Although this doesn''t hurt the environment in its natural form, once the limestone is mined out, sinkholes can form and disrupt underground waterways.
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