成砂 meaning in Chinese
blown sand
Examples
- As regards sk ( bias angle ) and kg ( kurtosis ) values , the fluvio - lacustrine facies or palaeosols increases considerably compared with the aeolian sands . the former displays positive bias and the latter often approximately symmetrical distribution with only a minority negative bias
就sk和kg变化而言，河湖相或古土壤值较之风成砂明显增高，前者呈正偏，后者常常表现近对称分布，仅少数呈负偏。 - Mz , a , sk , kg and sc / d ( ratio of the sum of silt and clay to sand ) of fluvio - lacustrine , palaeosols and aeolian sands constitute an interlocking , multi - fluctuation process curve with peak and valle y values : the < & value of mz , o and sk values often increase accordingly from aeolian sands to its overlying fluvio - lacustrine facies or / and palaesols , the kg value heightens , too , and the sc / d value also basically consists with its change steps
河湖相和古土壤与风成砂的mz 、 、 sk 、 kg以及sc d (粉砂粘土之和与砂的比值)构成一峰谷交替、犬牙交错的锯齿状多波动过程线：常常是由风成砂至上覆河湖相或和古土壤， mz的值、 、 sk值相应增大， kg相应增高， sc d值亦与之变化步骤基本一致。 - 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
该剖面不同沉积相粒度的一般分布特征尤其是粒度参数? mz 、的变化明显表现出，河湖相或古土壤通常要较风成砂颗粒细化，分选相对较差。 - This work carries out a temporal - spatial analysis and comparison in facial pattern , grain - size , and susceptibility of the sediments of the hunshandake sandy land ( hsl ) on the basis of studies of more than fifty geological sections , a number of samples collected from surface sands as well as results derived from previous studies . the preliminary results of this work provide new environmental information of the working area , which makes it possible to have a brief discussion about the evolution of the hsl since the late glacial epoch . this work can be summarized as the followings
晚冰期，浑善达克沙地全面扩张，达到了沙漠化最大规模，剖面中的古风成砂是最直接的证据，此时气候干冷；全新世早中期，浑善达克沙地成壤比较好，是一个大面积成壤期，相当于全新世适宜期，此时气候暖湿；全新世晚期，浑善达克沙地沙漠化正过程加强，在沙地各剖面上普遍发育风沙沉积，气温较干冷；目前：浑善达克沙地为另一成壤期，成壤作用相对于适宜期较差，气候干暖。 - This paper , based on the grain - size analysis and the comparative result of the mz - o scatter gram of ancient aeolian sands in milanggouwan section with the modern dunes in mu us desert , holds that fossil eolian dunes are a proxy of the dune activation , and be regarded as " desert process " , while the overlying fluvio - lacustrine and palaeosols on the dunes are regarded as inter - desert process
文中根据粒度分析及古今砂丘的mz ?散点图比较结果，认为古代风成砂丘特别是古流动砂丘是砂丘活化的体现，视为“沙漠期” ，而砂丘上覆的河湖相沉积与古土壤发育则可视为“间沙漠期” 。