Limestone constituent formed of calcareous particles formed by the recrystallization of lime mud
Meleke in the Gerofit Formation (Turonian) near Makhtesh Ramon, southern Israel; a type of micrite.
Micrite is a limestone constituent formed of calcareous particles ranging in diameter up to four μm formed by the recrystallization of lime mud.[1][2]
The term was coined in 1959 by Robert Folk for his carbonate rock classification system.[2] Micrite is derived from MICRocrystalline calcITE. In the Folk classification micrite is a carbonate rock dominated by fine-grained calcite. Carbonate rocks that contain fine-grained calcite in addition to allochems are named intramicrite, oomicrite, biomicrite or pelmicrite under the Folk classification depending on the dominant allochem.
Micrite is lime mud, carbonate of mud grade. Micrite as a component of carbonate rocks can occur as a matrix, as micrite envelopes around allochems or as peloids. The origin of micrites is still a problem in carbonate sedimentology due to the non-uniqueness of the processes generating it.[3] Micrite can be generated through multiple processes. In lakes and some marine environments, lime mud that could become micrite can form chemically or biochemically through whiting events, whereas in warm stratified marine waters it might be forming chemically.[4] Alternatively, microbial process known as micritization may lead to micrite formation.[5] Other processes which might produce micrite include the disaggregation of peloids, bioerosion, the mechanical degradation of larger carbonate grains and dissolution-reprecipitation processes.[6][7]
^McLane, Michael, Sedimentology, Oxford University Press, 1995, p. 238 ISBN 0-19-507868-3
^ ab Flügel, Erik, Microfacies of Carbonate Rocks: Analysis, Interpretation and Application, Springer, pp 74-94, 2004 ISBN 978-3-540-22016-9
^Tucker, Maurice E. (1990). Carbonate sedimentology. Oxford [England]: Blackwell Scientific Publications. ISBN 9781444314175.
^Bialik, Or M.; Sisma-Ventura, Guy; Vogt-Vincent, Noam; Silverman, Jacob; Katz, Timor (24 September 2022). "Role of oceanic abiotic carbonate precipitation in future atmospheric CO2 regulation". Scientific Reports. 12 (1): 15970. doi:10.1038/s41598-022-20446-7. PMC 9509385. PMID 36153366.
^Kabanov, P. B. (30 January 2003). "Products of micritization: evidences of microbial activity at and below the seafloor of the Upper Moscovian epicontinental basin of central European Russia". In Hoover, Richard B.; Rozanov, Alexei Y.; Lipps, Jere H. (eds.). Instruments, Methods, and Missions for Astrobiology VI. Vol. 4939. p. 141. doi:10.1117/12.501867. S2CID 129323579.
^Schlager, Wolfgang (2005). Carbonate Sedimentology and Sequence Stratigraphy. Tulsa, OK. ISBN 1565761162.{{cite book}}: CS1 maint: location missing publisher (link)
^Jerry Lucia, F. (September 2017). "Observations on the origin of micrite crystals". Marine and Petroleum Geology. 86: 823–833. Bibcode:2017MarPG..86..823J. doi:10.1016/j.marpetgeo.2017.06.039.
Micrite is a limestone constituent formed of calcareous particles ranging in diameter up to four μm formed by the recrystallization of lime mud. The term...
crystals less than 5 μm (0.20 mils) in length is described as micrite. In fresh carbonate mud, micrite is mostly small aragonite needles, which may precipitate...
Automicrite is autochthonous micrite, that is, a carbonate mud precipitated in situ (no transporting) and made up of fine-grained calcite or aragonite...
calcium carbonate (called calcite) accumulated forming lime mud (called micrite) which covered the sea floor. Small particles of sand or organic detritus...
microscopic coccoliths and other fine-grained fossil debris in a matrix of micrite mud. Small amounts of silica were also deposited, mainly from sponge spicules...
a thin section has uncovered the presence of lithified structures and micrite, present as laminated to clotted with chocolate-brown blebs. These are...
This means that their textures are similar to that of collophane, or fine micrite-like texture. Phosphatic grains may be accompanied by organic matter, clay...
The suffix -sparite is used if the rock has a crystalline matrix, and -micrite if it contains a micritic, or mud-based, matrix. The prefix describing...
limestone composed of fossil debris ("bio") and calcium carbonate mud ("micrite"). Most of the fossil debris in chalk consists of the microscopic plates...
years ago)) of the Late Jurassic epoch. It is formed from ooliths in a micrite (fine grained calcium carbonate) matrix. There are many voids in the stone...
Member is typically 11 to 16 m thick and largely consists of marls and micrites with interbeds of calcareous mudstone. The Ridgeway Member is about 3 to...
southern Karawanks of Austria. They are composed of interlayered cherts and micrites separated by irregular, non-planar bedding surfaces. The cherty horizons...
The group largely comprises limestones, including biosparite and cherty micrite but also some subordinate mudstones, siltstones and dolomites. Basaltic...
deemed an allochem. The allochems are typically embedded in a matrix of micrite (lime mud) or sparry calcite. Folk, R. L. (1959) Practical petrographic...
more homogenised and settle out as fully marine flint-bearing calcareous micrites. During the Maastrichtian, a regression commences. After the initial deposition...
plattenkalk (a very fine-grained limestone that splits into thin plates, usually Micrite) that extends through the Swabian Alb and Franconian Alb in Southern Germany...
argillaceous calcimicrite. Calcimicrite is a type of limestone that contains more micrite than allochem, and the diameter of any particle measures less than 20 microns...
formed between the large coral patch reefs are documented by micrite and partially leached micrite. The Tafraout Group covers most of the W High Atlas, surrounded...
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