| 单词 | rockfall |
| 释义 | > as lemmasrockfall rockfall n. (a) a cascade in a river over rocks; (b) the descent of loose rocks; a mass of fallen rock. ΘΚΠ the world > the earth > structure of the earth > structural features > boulder, pebble, or stone formation > [noun] > rock glacier or stone river rockfall?1797 stone river1877 rock glacier1888 rock stream1905 stone run1906 rock river1920 the world > the earth > structure of the earth > formation of features > movement of material > [noun] > movement under gravity or water land-rushc1550 slide1664 landslip1679 pitting1686 rockfall?1797 shoot1820 landslide1822 run1827 mountain slide1830 slip1838 slough1838 mudslide1848 founder1882 creep1889 soil-creep1897 rock creep1902 slump1905 solifluction1906 slumping1907 slopewash1938 sludging1946 mass wasting1951 ?1797 B. Hawkins in Georgia Hist. Soc. Coll. (1916) IX. 171 The first rockfalls in the river..are 5 miles below the second falls. 1821 Gentleman's Mag. Nov. 456/1 Mr. Hood, who is one of the draftsmen of the expedition, took a sketch of the Rock-fall. 1930 Times Educ. Suppl. 24 May p. i/2 Crossing the débris of a huge rockfall which apparently came down recently. 1967 M. J. Coe Ecol. Alpine Zone Mt. Kenya 87 The Tarn..is enclosed at its lower edge by the rock fall. 1971 World Archaeol. 3 150 The rockfall layers at Puntutjarpa were of considerable archaeological interest. 1990 Kalgoorlie Miner 1 Feb. 1/2 It was the second rockfall at the mine in seven months. In the last, a 28 year old airleg miner was killed. < as lemmas |
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