| 单词 | residual soil |
| 例句 | Soils are described as residual soils if they develop on bedrock, and transported soils if they develop on transported material such as glacial sediments. Physical Geology 2015-01-01T00:00:00Z The residual soils are made up chiefly of the insoluble parts of the rock from which they are derived, the soluble parts having been removed in the process of disintegration. The Geography of the Region about Devils Lake and the Dalles of the Wisconsin 2011-11-29T03:00:17.347Z Much of the cotton and tobacco of the South Atlantic States is grown on these residual soils which were left as the more soluble portions of the rocks were removed in solution. North America 2011-05-05T02:00:20.027Z Most of the plains of Cuba above indicated have been formed by the erosion of its surface, and are covered with residual soil derived from the underlying limestones. The History of Cuba, vol. 1 Soils formed by weathering may remain in place as residual soils, or they may be transported, sorted, and redeposited, either on land or under water. The Economic Aspect of Geology Parent materials provide important nutrients to residual soils. Physical Geology 2015-01-01T00:00:00Z The soil that is found resting on the rocks from which it was formed is known as residual soil. Conservation Reader Regions containing residual soils are more variable in crop adaptation than drift soils and require more careful watchfulness on the part of those who may wish to buy land. The Young Farmer: Some Things He Should Know It is not supported by river analyses, or by the chemical character of residual soils from sedimentary rocks. The Birth-Time of the World and Other Scientific Essays The weathering of a highly acid igneous rock with much quartz produces a residual soil with much quartz. The Economic Aspect of Geology |
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