alluviation

Xiabancheng basin is a reversed syncline with its sedimentary sequence composed of fluvial alluviation facies ;

下板城盆地为一倒转向斜，盆地沉积充填序列为河流&冲积相沉积；

The research shows that , without comprehensive treatment of dam foundations , it is feasible to greatly increase the depth of water-storage on soft soil foundations formed by alluviation at the Yellow River Estuary and marine deposition .

研究证实，在黄河河口冲积和海相沉积的软弱地基上对坝基不作全面处理，而使蓄水深度大幅度提高是完全可行的。

About fifteen thousand years ago , the delta swelled and in time land was formed through alluviation .

15000年以前，古三角洲隆起，逐渐冲积成了陆地。

Characteristics of runoff and sediment and regularity of alluviation and siltation in East and South Dongting Lake

东、南洞庭湖的径流、泥沙特征及冲淤规律

The Dongting Lake form by the river facies , and the main process is the lake facies alluviation and lake-river facies alleviation .

洞庭湖洲滩湿地形成于河相冲积，湖相沉积和河湖相冲（沉）积过程为主；

Alluviation layer thickness in XinQiao primary well is 392 meters , the freezing depth is 602 meters , this is the deepest well in the same time of freezes chamber .

新桥矿主井冲积层厚度为392m，冻结深度为602m，为同期冻结最深的井筒。

Alluvial sequence developes through alluviation in a river basin . The storing water level does not control it directly , but it is influenced by groundwater level and controlled by topography and erosional basement level .

冲积层序是指在流域盆地中以冲积沉积作用为主而形成的一类层序，其不明显地受蓄水面的控制，但受潜水面的影响和地形及侵蚀基准面的控制。

Based on a brief review of the principle of architecture element analysis and the bounding surfaces combined with the study of Yanchang Formation , we found that the architecture element analysis can be applied to strata mainly formed by alluviation .

通过对构型单元分析法原理和构型单元界面定义的回顾并结合对延长组的研究，发现构型单元分析法适用于以冲积作用为主要沉积物搬运方式的沉积地层。

The swelling soil in Hefei zone was formed at the Q3 epipleistocene of the 4th subage or before . It belongs to the type of Huaihe alluviation and diluvion .

合肥地区膨胀土形成于第四纪上更新世Q3及其以前，属江淮冲积、洪积成因类型。

A Research into Ancient Yue People ′ s Valley-field Culture Based on Etymology of the Characters " Luotian " and " Tan "; About fifteen thousand years ago , the delta swelled and in time land was formed through alluviation .

从雒田和榃的语源看古越人的谷田文化15000年以前，古三角洲隆起，逐渐冲积成了陆地。