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concretion    
n. 凝固,凝固物,结石

凝固,凝固物,结石

concretion
n 1: the formation of stonelike objects within a body organ
(e.g., the kidneys)
2: a hard lump produced by the concretion of mineral salts;
found in hollow organs or ducts of the body; "renal calculi
can be very painful" [synonym: {calculus}, {concretion}]
3: an increase in the density of something [synonym: {compaction},
{compression}, {concretion}, {densification}]
4: the union of diverse things into one body or form or group;
the growing together of parts [synonym: {coalescence},
{coalescency}, {coalition}, {concretion}, {conglutination}]


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  • Concretion - Wikipedia
    A concretion is a hard and compact mass formed by the precipitation of mineral cement within the spaces between particles, and is found in sedimentary rock or soil [1]
  • What Is a Concretion? - FossilEra. com
    A concretion is a mineral-cemented mass that forms in place inside sedimentary rock, typically growing around an organic or material nucleus that may or may not leave a fossil core behind
  • Concretions: What Are These Bizarre Rock Formations? (And What’s Inside . . .
    A concretion is a hard mass found within layers of sedimentary stone They’re generally round in shape, and each type tends towards one form or another You shouldn’t confuse a concretion with a nodule
  • CONCRETION Definition Meaning - Merriam-Webster
    Medical Definition concretion noun kän-ˈkrē-shən, kən- : a hard usually inorganic mass (as a tophus) formed especially from mineral salts in a living body
  • What Is A Concretion? - WorldAtlas
    A concretion is a hard mass that forms when rock minerals precipitate in cracks or cavities, or through the build-up of sediment
  • Concretions - Paleontological Research Institution
    Concretions are commonly misunderstood geologic structures Often mistaken for fossil eggs, turtle shells, or bones, they are actually not fossils at all but a common geologic phenomenon in almost all types of sedimentary rock, including sandstones, shales, siltstones, and limestones
  • Cannonball Concretions : Formation, Distribution - Geology Science
    Cannonball concretions are naturally occurring, round to sub-round, often hard and compact masses of sedimentary rock These unique geological structures range in size from a few centimeters to several meters in diameter
  • Concretions: How to Identify Them
    A concretion is a hard, usually rounded mass that forms inside sedimentary rock when minerals precipitate from groundwater and cement the surrounding grains together, often around a nucleus such as a shell or leaf
  • Concretion | mineralogy | Britannica
    In mineralogy, a concretion is a rounded mass of mineral matter that forms within rock, often with a composition different from the surrounding rock These formations are typically produced by the deposition of minerals from an aqueous solution within the rock 1 2
  • Concretions – Grant Keddie
    A concretion is started by minerals accumulating in the pores of sediment about a nucleus or centre This nucleus is frequently of organic origin, but inorganic substances such as sand are also common





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