冲积相

区内第四纪沉积环境和沉积物的成因类型分为3个类型，晋江河道以冲积相为主，山前高地以洪冲积为主，盆地主体区域以海湾相为主。

The three types of formation causes be reflected in Quanzhou basin : the alluvial facies in Jinjiang riverway , and the pluvial facies and alluvial facies in highland , and the bay milieu facies in basin .

盆地中充填有第四纪湖相-冲积相厚层沉积，有砂锡聚集，局部富集成矿床。

The basin was filled with thick sediments of Quaternary lake and alluvial facies and accumulated with tin placer which is locally enriched to be commercial deposit .

南宁市冲积相粘性土磁效应机理及初步分区

Magnetic effect mechanism and preliminary dividing region of alluvial cohesive soil of Nanning

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；

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

经磁化处理后，南宁市邕江Ⅰ、Ⅱ级阶地冲积相粘性土的强度有所增大。

After magnetization handles , the strength of river alluvial cohesive soil of first and second terrace of Yong River of Nanning City are strengthened .

沉积相发展顺序为：冲积相、冲洪积相→河流相、湖沼相→湖沼相、河口相→海湾相→河口相。

The development sequences of sedimentary facies are : diluvial-alluvial and limnetic , alluvial and limnetic , estuarine and limnetic , bay , and estuarine facies .

研究表明，南北两个小区在地层的沉积特征、地层厚度和成因类型方面有所不同：昆明盆地南部小区以湖积和冲积相为主，北部小区以冲积、冲洪积相为主。

It is indicated that the Quaternary strata character in the south sub-area is different from the north : sediments in the south sub-area is major in lacustrine-alluvial facies , however , in the south sub-area it is major in alluvial-diluvial facies .

近岸水下冲积扇相特征及实例

Characteristic of Beachy underwater alluvial fan facies & with a practical example

沉积相可分冲积扇相、扇三角洲相、湖泊相、河流相和沼泽相。

The sedimentary facies can be classified into alluvial fan , fan delta , lake , stream and swamp .

中段为重力滑塌岩块及角砾岩相-构造活动型冲积扇相沉积；

The middle member is the gravity slide collapse block and breccia facies-structural movement type alluvial fan facies sediments .

对侏罗&白垩系的沉积环境进行了分析，初步划分出河流相、湖泊相、冲积扇相三大类型。

The author has analyzed the Jurassic Cretaceous depositional environments and preliminarily recognized the fluvial , lacustrine and alluvial fan facies .

发育的沉积相类型有冲积扇相、河流相、湖漫相、湖泊相、扇三角洲相、三角洲相、湖底扇相和火山岩相。

The sedimentary facies developed mainly include alluvial fan , fluvial , lake flat , lacustrine , fan delta , delta , lake-floor fan and volcanic rocks .

沉积模式表现为：由盆地西南缘向盆地中心依次出现冲积扇相三角洲相浅湖亚相和深湖亚相。

The depositional pattern shows that alluvial fans , delta facies and lacustrine facies are developed hi proper order from the southwest to the center of the basin .

济阳坳陷深层发育的三角洲相、扇三角洲相及冲积扇相砂岩，是以填隙物微孔隙和粒间孔为主的低孔低渗、中孔低渗型储层。

The deep sandstone of delta , fan delta and fluvial fan facies are low porosity low permeability or mid porosity low permeability reservoirs with filling micropores and intragranular pores .

东海西湖凹陷始新统平湖组为半封闭海湾沉积环境，海水由南往北侵入，平湖组下段为海湾浅水滨岸滨岸冲积平原相沉积；

Pinghu formation of Eocene in Xihu sag of the shelf basin of the East China Sea is semi-closed bay sedimentary environment . Marine transgression is from south to north .

研究结果表明，冲积河流相地层的体系域划分具有4分性特征，即主要发育有低水位体系域、扩张体系域、高水位体系域，当基准面缓慢下降时，还可发育收缩体系域。

The results show that there are four types of system tracts in alluvial-fluvial facies including low system tract , extension system tract , high system tract , contracting system tract .

冲积河流相是我国中、新生代陆相盆地重要油气储集层系类型之一，建立相应的层序地层学研究方法对于评价和预测冲积河流相储层具有重要意义。

Fluvial facies strata are one of important reservoirs in Meso-Cenozoic continental basin in China . It is necessary to establish corresponding sequence stratigraphy research method for fluvial facies reservoir evaluation and prediction .

曲流河相及曲流河三角洲相分布在东北缘，辫状河相、冲积扇相及扇三角洲相分布在西南缘。

The meandering river facies and the meandering river delta facies are distributed over the northeast side , braided river facies , alluvial fan facies and the fan delta facies are over the southwest side .

识别出盆地煤系的沉积相类型有冲积扇相、河流相、扇三角洲相、三角洲相和湖泊相，将之分别归属于冲积沉积体系、湖泊&三角洲和扇三角洲沉积体系；

The sedimentary facies were identified as alluvial fan facies , fluvial facies , fan-delta facies , delta facies and lacustrine facies , and classified as alluvial depositional system , lake-delta and fan-delta depositional system ;

须五期由于受印支运动晚幕影响，研究区北部成为剥蚀区，其它地区整体为冲积平原相沉积。

Because of Indo-China movement late scenes , it is erosion area in the northern of the study area , but the other area is the alluvial plain sediments at the 5th member depositional period .

层序Ⅲ是盆地坳陷期的沉积，发育冲积扇相、扇三角洲相、河流相、三角洲相和滨-浅湖亚相。

Sequence ⅲ was deposited during the depression period of the basin , during the period alluvial fan facies , fan delta facies , fluvial facies , delta facies , and shore-shallow lake subfacies were developed .

其中洪泛体系域主要发育洪泛平原，砂体不发育；辫状河体系域主要发育辫状河三角洲，砂体较发育；冲积扇相仅局部存在。

In flooded system tract , the flooded plain facies is dominated , with sand bodies underdeveloped . In the braided stream system tracts , the delta facies is dominated , and sand bodies well developed .

其中辫状河可划分为砾质辫状河和砂质辫状河。洛河组主要沉积了冲积扇相、风成沉积相、辫状河相和沙漠相；

The latter is further sub-divided into gravelly and sandy braided fluvial facies . Major sedimentary facies in the Luohe Formation include alluvial fans facies , eolian facies , braided fluvial facies , and desert facies .

其中，早中侏罗世主要发育湖泊相、沼泽相，偶见冲积扇相发育，晚侏罗世滨浅湖相，湖泊三角洲相与河流相发育。

Among them , lacustrine and swamp facies were mainly developed during early - middle Jurassic , occasionally developed alluvial fan facies ; shore-shallow lacustrine facies , lake delta facies and fluvial facies were developed during late Jurassic .

合肥盆地中生带发育的沉积相主要有冲积扇相、河流相及湖泊相并沉积相及沉积旋回随时间的演化规律具有盆地北带和盆地南带同步性和相带的连续性。

The dominant facies in Hefei Basin in Mesozoic include alluvial fan , fluvial and lacustrine facies . The evolution of facies and sedimentary cyclicity with time shows synchrony and continuity between the north and the south system . 4 .

华亭矿区延安组形成于河流、湖泊三角洲&湖泊沉积体系，其中以湖泊三角洲平原占优势，其沉积相有河流相、冲积扇相、湖泊三角洲相、湖泊相。

The Yanan Formation in Huating mining area was formed in fluvial , lake delta-lacustrine depositional system , and the lake delta plain is in the ascendant , and have sedimentary facies of fluvial , alluvial fan , lake delta and lacustrine .

碎屑岩沉积相包括潮坪相、泻湖相、河流相、冲积扇相以及扇三角洲相：碳酸盐沉积相包括蒸发台地、局限台地、开阔台地和台地边缘浅滩。

It can be concluded that clastic facies consisting of tidal facies , lagoon facies , Fluvial facies , alluvial fan facies and fan delta and carbonate facies including evaporation platform , restrict platform , open platform and ford of platform margin .

冲积-河流相层序地层模式&以济阳坳陷新近系为例河流相储层沉积学表征河流相层序地层学研究

The mode of sequence stratum of alluvial-fluvial facies & taking the upper Tertiary of Jiyang depression for exemple

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；

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

为了更确切的了解冲积-河流相地层格架的时空分布规律，归纳和总结了冲积-河流相层序、准层序组及体系域的划分依据。

In order to know time-space distribution rule of the alluvial - fluvial facies stratigraphic hake , classification basis of sequence , subsequence sets and system tract of the alluvial-fluvial facies was summed up .