| 摘要: |
| 本文通过对我国南北方海岸风成砂丘石英颗粒表面结构的对比研究,发现从北到南,石英颗粒表面的机械痕迹由强到弱,而化学痕迹则由弱到强。指出,在使用石英颗粒恢复古沉积环境时,只有相同气候带才能对比,不同气候带是难以对比的。 |
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| A COMPARATIVE STUDY OF SURFACE TEXTURES OF QUARTZ GRAINS ON COASTAL DUNES OF CHINA |
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| Abstract: |
| The surface textures of quartz grains from coastal dunes in three climatic zones irom North to South China have been studied via scanning electron microscopy. It is revealed that there are differences in surface textures among these quartz grains and mechanical markings decrease while chemical markings increase on quartz grains from the North to the South due to climatic differences. Thus, the surface textures on quartz grains can be used in reconstruction of paleoenvironments only within the same climatic zone. |
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