A small spherical grain of mineral embedded in varying numbers in the matrix of chondritic meteorites.
| 单词 | θ5515 |
| 释义 | the world > the earth > structure of the earth > constituent materials > rock > texture or colour > [noun] > texture > round inclusions (4) chondrule1889 A small spherical grain of mineral embedded in varying numbers in the matrix of chondritic meteorites. water biscuit1899 A disc-shaped concretion (oncolite) of carbonate deposits formed in certain lake environments by the action of freshwater algae or bacteria. orbicule1931 Geology. A spheroidal inclusion in an igneous rock; spec. an inclusion composed of a number of concentric layers. Cf. earlier orbicular, adj. oncolite1933 A spheroidal stromatolite. |
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