| 单词 | quick clay |
| 释义 | > as lemmasquick clay quick clay n. [after Norwegian kvikkleire (1873 or earlier)] a type of clay found in northern areas (e.g. Scandinavia, Canada) typified by a high water content, which under certain conditions can spontaneously liquefy, sometimes causing large mudslides; cf. sense A. 18. ΘΚΠ the world > the earth > structure of the earth > constituent materials > clay > [noun] > other clays red clayc1475 urry1669 blae1724 cat-dirt1747 iron clay1750 till1762 mulatto clay1788 oak-tree clay1794 porcelain jasper1794 porcellanite1794 Karoo ground1836 plinthite1836 papa1851 Bradford clay1858 Indianaite1868 sinopite1868 hydrobiotite1881 pampas-clay1885 byon1892 potato clay1896 bentonite1898 quick clay1901 gumbotil1916 1901 Bull. Amer. Geogr. Soc. 33 421 In the Vaerdal landslip of May, 1893,..the stream had been cutting against a clay bank in which there was ‘quick’ clay beneath the soil. 1968 R. W. Fairbridge Encycl. Geomorphol. 640/2 A special class of mudflows are those developing in quick clays which spontaneously liquefy and may flow readily on very gentle slopes, rafting houses, roads and trees appreciable distances. 1998 Philos. Trans. (Royal Soc.) A. 356 2457 Clays formed in marine environments often have a much more open structure than those formed in fresh water: isostatic uplift leaves the structure in a metastable state which can be easily disrupted with the disastrous consequences of the quick clay flow slides that are common in Scandinavia. < as lemmas |
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