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delta plains
相关语句
  三角洲平原
     CⅠis distributary channel factes on fan delta plains and formed very fine high quality reserviors.
     CⅠ油组主要为扇三角洲平原分流河道沉积,常形成好到极好的优质储层。
短句来源
     Among these,the area of the vertical stack of peat bogs in the lakeshore and lake delta plains form the mainbody of north coal rich belt,and the peat bogs of wetlands in front of alluvial fans form the mainbody of south coal rich belt.
     其中,湖滨和湖缘三角洲平原的泥炭沼泽垂向叠加地段构成北部富煤带的主体,冲积扇前湿地泥炭沼泽形成了南部富煤带的主体
短句来源
     Use is made of the sedimentary features of coalbearing measures to analyze the development conditions for Coalseam 13 of Huainan Coalfield, and a conclusion is reached that this seam was formed in the environments of delta plains which were characterized by anasto-motic tributaries.
     本文从含煤岩系的沉积特征出发分折了淮南煤田13号煤层形成条件,认为13号煤是形成于以网状分流河道为特征的三角洲平原环境。
短句来源
     The sub-sag was an asymmetry Tertiary fault-step basin, south of which was slow fault-step belts and are mainly delta plains and delta front sediments.
     渤南洼陷古近纪和新近纪为不对称断阶型湖盆,南部为缓坡断阶带,以三角洲平原和三角洲前缘沉积为主;
短句来源
     TYPES OF NORTH ANHUI DELTA PLAINS WITH PERMIAN COAL MEASURES AND THEIR SEDIMENTARY ARCHITECTURE
     皖北二叠系主要含煤段三角洲平原类型及其沉积构成
短句来源
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  相似匹配句对
     (4)delta ;
     (4)三角洲;
短句来源
     in hills and plains.
     水田和水面主要分布在江淮丘陵和沿江平原区。
短句来源
     THE FAULT DELTA
     断块型三角洲
短句来源
     STUDY ON THE PHYSICAL AND CHEMICAL CHARACTERISTICS OF THE SOILS IN THE COASTAL PLAINS OF THE PEARL RIVER DELTA
     珠江三角洲滨海平原区几种土壤理化性质的研究
短句来源
     TYPES OF NORTH ANHUI DELTA PLAINS WITH PERMIAN COAL MEASURES AND THEIR SEDIMENTARY ARCHITECTURE
     皖北二叠系主要含煤段三角洲平原类型及其沉积构成
短句来源
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  delta plains
The reduction in sediment delivery to deltas due to trapping behind dams, along with the human control of routing river discharge across delta plains, contributes to the sinking of world deltas.
      
Monte Carlo simulation identified statistically significant clustering of pancreatic cancer in five subdivisions located near the Nile River and Delta plains.
      
Delta plains, once the home to vast areas of wetlands, now host vast agriculture infrastructures.
      


The pearl River Delta plains include the flat regions and the coastal areas of nine districts are namely: Shenzhan, Baoan, Dangkuan.Panyu, Zhongzhan, Deumen, Zhuhai, Xinkuai and Taishan of Guangdong province.The three major soil types in this region are the paddy soil,the alluvial soil,and the salt swamp soil.Thirty-five soil samples were taken for analysis. Analytical results showed that the soils had high contents of nitrogen and organic matter. Among these soils, the contents of organic matter and total...

The pearl River Delta plains include the flat regions and the coastal areas of nine districts are namely: Shenzhan, Baoan, Dangkuan.Panyu, Zhongzhan, Deumen, Zhuhai, Xinkuai and Taishan of Guangdong province.The three major soil types in this region are the paddy soil,the alluvial soil,and the salt swamp soil.Thirty-five soil samples were taken for analysis. Analytical results showed that the soils had high contents of nitrogen and organic matter. Among these soils, the contents of organic matter and total nitrogen of saline paddy soil were highest,being 4.64%and 0.203%, respectively. But those of the salt swamp soil (Nithan) were lowest, being2.39% and 0.125%,respectively. In the surface layer of these soils the total P and the K contents were more than 0.136% and 2.28% respectively, being in the medium to high range. But the acid saline paddy soil showed low total P , available P, and available K, but high micro-nutrient elements (B, Mn, Zn, Cu, Mo) . The soil pH value of most soil types ranged from 6.7-8.3, except the acid saline paddy soil and mangrove salt swamp soil.Among 1he cultivated soils,the saline paddy soil contained a great amount of salts, from 0.23% to 0.341% , with an average of 0.287%. The salt content of temporary submergic paddy soils was less than 0.1%. The salt content of the salt swamp soil varied from 0.072% to 2.88%. The main composition of salt was sodium chloride. The texture of uncultivated soil was clayey, while that of most of the cultivated land was heavy loam to light clay, with salt swamp soil light clay to medium clay.Due to the characteristics of these soils as analyzed it is suggested that this area should develop more sugar cane plantation and fishponds instead of paddy rice. The salts and the acid matter should be leached from saline paddy soils and acid saline paddy soils. Reclaiming the salt swamp soils for comprehensive utilization deserved more consideration.

本文是研究珠江三角洲滨海平原的土壤和浅海滩涂。主要土壤有水稻土、冲积土和滨海盐渍沼泽土(海涂土壤)等三个土类。总共采取35个土壤样本进行分析研究。结果表明:土壤有机质和氮素含量较高,其中以酸性盐渍水稻土的含量最高,滨海盐渍沼泽土(泥坦)的最低,大多数土壤耕层(表层)全磷、全钾含量均属中等至丰富范围,只有酸性盐渍水稻土的全磷、有效磷和有效钾含量较低;土壤微量元素(硼、锰、锌、铜、钼)含量多属丰富,个别土壤含相稍低;土壤pH值(除酸性盐渍水稻土和红树盐渍沼译土以外)平均多在6.7~8.3之间;耕作土壤的盐分含量以盐渍水稻土的含量最高,其范围为0.230~0.341%,潴育性水稻土的含盐量最低在0.10%以下,滨海盐渍沼泽土的含盐量变幅很大,为0.072~2.88%,盐分组成以氯化钠为主;土壤质地和重,耕作土壤多属重壤土至轻粘土,而滨海盐渍沼泽土多属轻粘土至中粘土。根据土壤性质的特点,提出了合理利用改良意见。

The Carboniferous-Permian Systems consist of strand plain, delta plain and alluvial plain deposits developed in gulf environment in Shouyang-Yangquan area of Shanxi province.The deposits occur one by one from Benxi Formation ( C26 ) to Upper Shihezi Formation ( P22 ) , which indicates gradual regression processes. Sedimentary environments consist mainly of delta plains in which alluvial plain occurs landward and strand plain, seaward, which includes gulf or distributary bay, subtidal carbonate and intertidal...

The Carboniferous-Permian Systems consist of strand plain, delta plain and alluvial plain deposits developed in gulf environment in Shouyang-Yangquan area of Shanxi province.The deposits occur one by one from Benxi Formation ( C26 ) to Upper Shihezi Formation ( P22 ) , which indicates gradual regression processes. Sedimentary environments consist mainly of delta plains in which alluvial plain occurs landward and strand plain, seaward, which includes gulf or distributary bay, subtidal carbonate and intertidal shoal of organic debris as well as tidal flat , marsh and swamp. Delta is characterized by well-developed delta-plain and poor-developed delta front; It can be regarded as riverdominated shallow-water delta. All of these sedimentary environments are changed regularly in history and space with the regression.

本区石炭—二叠系是在海湾背景下发育的一套由滨海平原—三角洲平原—冲积平原沉积组成的海退层系。主要沉积环境是三角洲平原,其上部为冲积平原包括网状河和辫状河;下部为海湾(或分支间湾)、潮下碳酸盐岩、潮间介壳滩、碎屑岩潮坪及滨海沼泽湿地等。三角洲为河控浅水三角洲。上述沉积环境,随海水退却在时空上具明显的规律性变化。

Use is made of the sedimentary features of coalbearing measures to analyze the development conditions for Coalseam 13 of Huainan Coalfield, and a conclusion is reached that this seam was formed in the environments of delta plains which were characterized by anasto-motic tributaries. Such environments are, however, not adequate for the formation of Coalseam 13 which is thick and widespread. The development must have been completed by timely and appropriate crust movements. It so happens that during the...

Use is made of the sedimentary features of coalbearing measures to analyze the development conditions for Coalseam 13 of Huainan Coalfield, and a conclusion is reached that this seam was formed in the environments of delta plains which were characterized by anasto-motic tributaries. Such environments are, however, not adequate for the formation of Coalseam 13 which is thick and widespread. The development must have been completed by timely and appropriate crust movements. It so happens that during the formation of the seam what is now Huainan Coalfield was at its relatively rising stage of a general subsidence, a moment when a minor crust movement was changing its direction, which contributes quite a lot to the formation cf thick coalseams

本文从含煤岩系的沉积特征出发分折了淮南煤田13号煤层形成条件,认为13号煤是形成于以网状分流河道为特征的三角洲平原环境。但是能形成这种分布广泛和厚度较大的13煤,还必须有合适的地壳运动条件,在形成13煤时淮南煤田正处于缓慢沉降过程中的相对上升阶段,也是小型地壳运动方向的转变时刻,此时最适合于较厚煤层的形成

 
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