| 单词 | alluvial cone |
| 例句 | At the bottoms of steep slopes, temporary streams build alluvial cones or fans. The Geography of the Region about Devils Lake and the Dalles of the Wisconsin 2011-11-29T03:00:17.347Z In places fault scarps a score or more feet in height cross the alluvial cones at the mouths of the small high-grade valleys in the mountains. North America 2011-05-05T02:00:20.027Z The oversteepened sides of the trough are graded by landslips, by talus slopes, and by alluvial cones. The Elements of Geology The moving floor of ice stretched high across a valley sweeps along as lateral moraines much of the waste which a mountain stream would let accumulate in talus and alluvial cones. The Elements of Geology |
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