| 释义 |
oolithenUK
o·o·lith O0084900 (ō′ə-līt′)n. A small, round grain consisting of concentric layers of calcium carbonate, silica, or dolomite that have precipitated around a shell fragment, sand grain, pellet of alga, or other central object. Also called ooid.
[oo- (since ooliths resemble fish roe in texture and appearance) + -lith.]
o′o·lith′ic adj.oolith (ˈəʊəˌlɪθ) n (Geological Science) any of the tiny spherical grains of sedimentary rock of which oolite is composedTranslations
oolithenUK
oolith[′ō·ə‚lith] (petrology) A small (0.25-2.0 millimeters), rounded accretionary body in a sedimentary rock; generally formed of calcium carbonate by inorganic precipitation or by replacement; ooliths generally exhibit concentric or radial internal structure. |