grain-size sorting 中文意思是什麼
grain-size sorting
解釋
粒度分選-
The field observation of the sediments of storm surge produced by no. 11 typhoon in 1997 shows that sedimentation rate of storm surge sediments are greater than that of normal astronomical tide sediments, and the grain size shows relative coarse with poor sorting. vertical sequences of the storm sediment show parallel bedding and overlapped by hummock bedding. these characteristics provide good basis for building the index of storm surge deposit
通過對梁垛河閘9711號臺風的現場觀測並結合目前已有的風暴潮沉積的研究，分析了風暴潮沉積在構造和結構上的特點，從而建立了正常潮灘沉積中風暴潮沉積的識別標志，同時在野外觀測中還發現即使在風暴潮期間，高潮灘上部仍存在只有淤積沒有侵蝕的地帶。 -
Furthermore, sorting of the sandstones in the braided river is better compared with that of in the meandering river system. in the same subfacies, grain size is larger and sorting is better in the channel sandstones which developed with large - scale cross - beddings such as trough cross - bedding, compared with sandstones in the flood microfacies. in the same microfacies, better sorting and coarser grained sandstones are distributed in the middle and lower part of the unit
與曲流河亞相相比，辮狀河亞相砂巖的粒度較粗，分選性較好，砂體多次疊置而規模更大；相同河流亞相的河道微相與泛濫平原微相相比，前者的砂巖粒度較粗、分選性較好，發育槽狀交錯層理等大型層理構造；在同一微相內，處于中下部的流體單元其粒度較粗，分選較好。 -
The general characteristics of the grain - size distribution of different sedimentary facies, es pecially the variations of the parameters mz ( mean particle diameter ) and o ( standard deviation ) clearly show that the fluvio - lacustrine facies and palaeosols usually become finer in particles and worse in sorting than the aeolian sands
該剖面不同沉積相粒度的一般分佈特徵尤其是粒度參數? mz 、的變化明顯表現出，河湖相或古土壤通常要較風成砂顆粒細化，分選相對較差。
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