Forests over limestone are usually a mosaic of rich and poor growth due to free-draining, steep slopes, water stress, high concentrations of calcium and magnesium, richer soils between jagged peaks and pinnacles. But also different dead things in it, chalk is mainly crinoids and stuff. Abiotically, limestone can form from sediments that crystalize from states of supersaturation in the water column. ScientistX. 1 decade ago. 1 1. These caves can be used to extract past climatic conditions, and are also open as tourist sites in the form of cave shows, where artificial lights and floors are used to enable the tourists to easily visit them. When the organisms die and sink to the bottom everything but the calcium is dissolved. Most limestones form in shallow, calm, warm marine waters. 16 Answers. Many environmentalists are concerned with the anthropogenic production of carbon dioxide produced by burning fossil fuels. Lv 4. That type of environment is where organisms capable of forming calcium carbonate shells and skeletons can easily extract the needed ingredients from ocean water. Limestone areas throughout the Indonesian archipelago originate from jurassic, cretaceous, tertiary and quarternary times. Anonymous answered . When the heat and pressure hits the limestone, calcite seed crystals form. Because marble is a fairly soft material, only a three on the Mohs hardness scale, it is easy to cut and carve. With continued metamorphism, these crystal seeds, grow while any clay deposits in the limestone transform into silicate structures such as mica. How Does Limestone Form? Although it occurs in many different forms, its origins can be traced back to either chemical or biochemical processes that occurred in the geological past, often tens to hundreds of millions of years ago. Research projects are being funded across the globe to find ways to sequester the “extra” CO2 produced by these processes in an effort to save our planet. It is formed from living organism in a paleomarine environment. Its basically chalk that has had a little more pressure applied to it. Limestone caves are beautiful structures that are formed within a limestone rock. Limestone is a very common sedimentary rock consisting of more than 50% calcium carbonate. It is a sedimentary rock, and is therefore formed when layers of sand/mud and animal remains fall to the bottom of an ocean or lake, and slowly decompose and are crushed together by the weight of the water, forming a rock.

how does limestone form

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