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micrite

Syllabification: mi·crite
Pronunciation: /ˈmikˌrīt, ˈmīˌkrīt
 
/

Definition of micrite in English:

noun

Geology
1Microcrystalline calcite present in some types of limestone.
Example sentences
  • Petrographic study reveals clusters of small grapestone particles, including benthic foraminifera, spines and calcite crystals encrusted by micrite.
  • The formation of botryoidal aragonite and clotted micrite was followed by silicification of carbonate phases and precipitation of authigenic quartz.
  • The irregular topography of this bedding surface is covered by a thin veneer of micrite with limonite disseminated throughout.
1.1Limestone consisting chiefly of this.
Example sentences
  • These fades grade upwards into ammonite-rich, bioturbated, interbedded nodular micrite, oncolitic limestone and mudstone which are interpreted as condensed zone deposits.
  • The Middle Member is 57.3 m thick and is mainly composed of gravel-bearing calcarenite, bioclastic limestone, bioclastic micrite, and reef limestone.
  • This interpretation appears supported by the predominant occurrence of Platystrophia in soft-weathering micrite and calcareous mudstone.

Origin

1950s: from micr(ocrystalline) + -ite1.

Derivatives

micritic

1
Pronunciation: /miˈkritik, mī-/
adjective
Example sentences
  • The Hamrat Duru rocks include radiolarian cherts, micritic limestones, turbiditic sandstones, shales and calcarenite, all complexly folded and thrust faulted in a 30 km wide fold-thrust belt.
  • The Southern Biofacies Belt is characterized by micritic carbonates rich in gymnocodiacean and dasycladacean algae, bellerophontid gastropods, productid brachiopods, and bryzoans to the exclusion of ammonoids.
  • The fossils were preserved in 98-99% pure micritic limestone, precipitated on a caliche paleosol that surrounded a shallow Pleistocene lake with swampy marginal zones.

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