使风化
1.To expose to the action of the elements, as for drying, seasoning, or coloring.
2.Caledonian movement made the researched area exposed tothe air and was eroded more than 100 million years.
3.As the tension fractures exist, spread and deep weathering is strong, which causes the lowing of the strength of the engineering slope.
4.Because of long-time water erosion and weathering , the furface of the stone becomes uneven, looking like a rough sea.
5.C horizons, which has lower weathering degree than B and A horizons, usually contained more clay micas than A and B horizons. However, the accumulation of xenogenetic parent materials could result in higher content of hydrous micas in A horizon than B or C horizons.
6.Plateau uplift may have promoted the establishment and growth of the Arctic ice-sheet not only by the alteration of atmospheric circulation and enhancement of weathering, but also by the formation of north-flowing Siberian rivers, which provided the Arctic Ocean with freshwater run-off.
7.According to the characteristics of basalt in Guizhou Province, in combination with weathering features of basalt, the design of trenches and side-slope are discussed, especially the design of side-slope of the contacting part between basalt and limestone is studied, in order to make the roadbed design safe and reasonable and reach the requirement.
