river facies meaning in English
河积相
Examples
- There were three times of sea - level fluctuation corresponding to the paleo - climate evolution , which had formed the sediments of alternative sea and river facies
晚更新世以来的三次海平面升降变化造成了潍河下游地区海陆沉积环境交替，形成了巨厚的海陆交互相沉积层。 - At the beginning of tiaohu period , the lake basin shrank , and the water became shallow . braided river facies and braided delta facies were found on both side of the basin , and deep lake facies disappeared , and shallow lake facies was only found in the southern of tiaohu seg and central part of malang seg
从中二叠世条湖期开始，湖盆发生萎缩，水体变浅，盆地南北两侧出现辫状河及辫状河三角洲相沉积，半深湖相消失，仅在条湖凹陷南缘及马朗凹陷中部残余滨浅湖相沉积。 - The theory of minimum entropy production or minimum rate of energy dissipation shows that a river is stable when it is in a relative equilibrium condition . ( 3 ) the river facies formulas of alluvial river have been developed using the theory of minimum rate of energy dissipation together with flow continuity and motion equations , suspended load transport or bed load transport equation . ( 4 ) the causes of the river patterns are explained using the theory of minimum rate of energy dissipation
（ 3 ）基于最小能耗率原理，以水流能耗率作为目标函数，以水流连续方程、水流运动方程及悬移质挟沙力公式或推移质输沙率公式作为约束条件，通过对目标函数求条件极值，分别推导出以悬移质造床为主的显式河相关系式和以推移质造床为主的显式河相关系式。 - According to the regional geology and the character of the lithofacies and well - logging facies , 4 kinds of sedimentary facies and 3 kinds of depositional system : marine system , delta system and fluvial system have been identified . the sedimentary facies of taiyuan formation is marine faceis , up to sanxi formation , the sedimentary facies is delta facies , the xiashihezi formation hel and he2 member are braided river facies , he3 member is meandering river facies . the mains types of sandstone of taiyuan formation are lithic quartzarenite and quartzarenite ; the mainly types of sandstone of sanxi formation and xiashihezi formation is litharenite
通过对20余口井2000多米岩心的观察和对40几口井的测井数据解释、对比，在研究区目的层段识别出了12种基本岩相和9种测井相类型，在区域沉积背景和单井相划分的基础上，根据岩相和测井相组合特征，在太原组?下石盒子组划分出4种沉积相和若干沉积微相，并进一步划分为3类沉积体系：滨浅海沉积体系、三角洲沉积体系和河流沉积体系。 - The border facies did not appear at the south edge of tiaohu seg . in the basin , the braided river facies and braided delta facies were only found at the foot of chahaquan palaeohigh in the west - south edge of the basin , the meandering delta was found from mazhong structural belt to fangfangliang horseback , and the other area were found covered by the shallow and fairly deep lake facies
条湖凹陷南缘芦草沟组未见边缘相沉积；岔哈泉古隆起处见少量辫状河相及辫状河三角洲相沉积；方方梁凸起东部至马中构造带发育曲流河三角洲相；其余地区则均为滨浅?半深湖相沉积。