Comparative Analysis Of Morphology Xinjiang Desert Sand

By Nikon stereomicroscope and Nanjing DT2000size analysis software, theTaklimakan Desert, gurban with farming in desert, Kumtag Taklimakan Desert sandflow as well as lose rustle samples analyzed separately for the Taklimakan Desertalong the road, tower, sand sites such as Bernhard leeward windward slope, sanddesert of Gurbantonggut the ShiCai road, the truck Kumtag Desert sand samples indifferent directions, and the Taklimakan Desert sand stream sediment at differentheights sand particle size and morphology were analyzed, preliminary conclusionsare as follows:1. The Taklimakan Desert sand contrast Kumtag desert surface sand surface andgurban table with Tongut Desert is fine sand, sand the surface of the TaklimakanDesert in the50-100μm focus on the value of very fine sand, Gurbanguly specialsurface sand desert in the50-250μm focus on the value of fine sand. Kumtag focus onthe value of surface sand is sand in the25-350μm. Three desert sand surfaceroundness0.6-0.8concentrated in Xinjiang, roundness Gurbantonggut desert sandsurface above the Taklimakan Desert and the overall Kumtag desert, desert behindKumtag Gurbantonggut desert.2. The smaller the particle size of the Taklimakan Desert sand the surface of thesand, the more transparent, Gurbantonggut Desert is almost colorless sand tableOvality obvious sand; while Kumtag surface sand there are colorless and transparent,white, yellow, gray, dark green, brown and so on, the greater the sand particle, thedeeper the color, the less transparent sand; Taklimakan desert sand surface andsurface sand desert Kumtag complex and diverse shapes, mostly irregular polygon,circle, oval, etc..3. The Taklimakan Desert sand concentrate stream sediment are very fine sand.In the Taklimakan desert tower station, sand samples collected roundness values ondifferent gradients ruoqiang, Celle station and Xiao Tong concentrated in four sites in the0.6-0.8, roundness is not very good, which is due to sandstorms process As aresult of the different wind speeds. Sand surface10cm from the surface up gettingsand smooth with no sharp edges, roundness increasingly evident, indicating that thesurface flow of sand through the abrasive action of external forces, sand shapes arecomplex and diverse, polygon, triangle, strip, oval and round have appeared.4. The Taklimakan desert sand dust weather process stream sediment sand, sandgradient layer to50cm by the very fine sand grain size becomes coarse silt,5cm withheight above the attendant rise in sand particle size decreases from creep, roundnesssmaller due sand carrying capacity as the updraft weakened gradually increase theheight, the larger the sand can not overcome the force of gravity is brought to ahigher proportion of coarse particles causes more uphill smaller than the proportion offine particles, because sand is small, the degree of abrasive particles in the surface oflarge particles did not clear the larger process of transmission sand, collision betweenthem, the greater the force, the more obvious abrasive sand, and small particles ofthe impact force is small, abrasive sand obvious.