limestones are organic sedimentary rocks formed from the accumulation and deposition of the hard part(skeletal part) of marine organisms. They are surfacial rocks formed at low temperatures and pressures.
No. Dolomite is formed by the replacement of Calcium in the mineral calcite by Magnesium, giving the chemical formula (Ca,Mg)CaCO3. Rocks formed largely of calcite are called limestones, and those which show extensive Magnesium substitution in calcite are called Dolomitic limestones.
Chalk is a biochemical sedimentary rock, formed mainly from the calcareous remains of microscopic marine organisms like plankton. It is primarily composed of calcium carbonate and is often found in extensive deposits in areas that were once covered by ancient seas.
A biochemical rock formed from layers of organic materials is called coal. Coal forms from the remains of plants that have been subjected to heat and pressure over millions of years, eventually turning into a solid carbon-rich rock. It is a valuable source of energy used for generating electricity and heat in many parts of the world.
Origin.
No, marble is a metamorphic rock that forms naturally from limestones.
calcitic and aragonitic skeletons of marine invertebrates
Yes. Most limestone is biochemical.
Most are volcanic in origin (some are reef limestones).
Alexander Ivanovich Oparin was a Soviet biochemist who, in 1924, put forward a coherent theory for the origin of life through gradually increasing sophistication of biochemical change in his book The Origin of Life.
Limestones are chemical sedimentary rocks, also called carbonate rock as it is made up of the carbonate radical CO3, hense Calcite CaCO3 Limestone. Although some limestones form by inorganic chemical precipitation most limestones are biochemical because they are mostly composed by organisms. Examples of limestone include Coquina composed almost entirely of fragmented seashells and Chalk, composed largely of microscopic shells.
shells
As it can be used for housing materials which would give us many jobs !
You can find limestones by defeating monsters in the /join quarry area in AdventureQuest Worlds. Keep battling monsters until they drop the limestones as loot. Good luck!
Evaporites primarily form through the evaporation of saline water, leading to the precipitation of minerals such as halite, gypsum, and calcite. While some organic matter may become trapped within evaporite deposits, their formation is primarily linked to geochemical processes rather than biochemical origins.
limestones
Calcium carbonate
fossils