sandy formation 中文意思是什麼
sandy formation
解釋
砂質層系-
It is believed that a dry sandy terrain would be particularly conductive to base surge formation.
據信在干砂地帶上特別容易形成基浪。 -
The lake shore sandy dike in the shrinking process of " hetao ancient lake " in the geologic period, which is suffered from the wind force function " rises right on the sandy land ", is the substantial basis of the formation of maowusu sandy land
摘要地質歷史時期「河套古湖」退縮殘留的湖濱沙堤受風力作用「就地起沙」 ，是毛烏素沙地形成的物質基礎。 -
The basement of the basin is consist of precambrian crystal basement and paleozoic folding basement, while the cover has undergone the evolution of intra - continental rife in permian, down warped basin in triassic - cretaceous period and inter - mountains basin in tertiary. the main sediments are huge - thick volcanic rock, shallow intrusive rock and tuff in early permian, dark mudstone, marl and muddy dolostone in lucaogou formation in middle permian, huge thick volcanic rock, intruder in tiaohu formation in middle permian, miscellaneous sandy gravel, sandstone and gray mudstone in triassic ( the red is under the gray, and huge - thick dark gray, gray sandy gravel, sandstone, mudstone with coal layer in jurassic
盆地基底由前寒武紀結晶基底和古生代褶皺基底組成，盆地蓋層則經歷了二疊紀的裂谷盆地、三疊紀?白堊紀的坳陷盆地和第三紀后的山間盆地的演化過程。盆地主要沉積了下二疊統巨厚火山巖、淺成侵入巖和凝灰巖；中二疊統蘆草溝組的暗色泥巖、泥灰巖、白雲質巖石以及條湖組的巨厚層火山巖、侵入巖；三疊系雜色砂礫巖、砂巖及灰色泥巖（下紅上灰） ；以及侏羅紀厚層深灰、灰色砂礫巖、砂巖、泥巖夾煤層。 -
The climax development group is isohumosols after sandy soil fixed under vegetation recovery condition in research regions. there was no different in soil type after 40 years developed. this manifested that soil formation and development process is very slow in high frigid regions
6 、研究區土壤在植被恢復條件下，風沙土被固定以後，經過40多年的發育，類型未發生明顯分化，表明在高寒地區土壤的形成發育過程相當緩慢，土地一旦發生荒漠化，恢復治理相當困難，所以荒漠化防治要以預防為主。
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