河流沉积
- 名fluvial deposit
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在河流沉积环境,石英砂的表面特征以次圆、贝壳状断口和水下撞击坑为主,显示了水流对石英砂颗粒表面的改造;
In the fluvial deposit environment , the quartz superficial characteristic is primarily by the inferior circle , the conchoidal breakage fracture and the submarine hit pit , revealing the transformation of current to the quartz ;
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3000年来该地区古环境变化经历下列过程:2.45KaBP前有河流沉积环境的特点:色素指标为零,C/N比值高达60~80等;
Before 2.45 ka BP , fossil pigment was not found in sediments , and C / N was obviously high and even reached 60 - 80 , characteristic of fluvial facies .
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该方法是著名河流沉积学家Miall(19851988)提出的。
Proposed by the famous sedimentologist Miall ( 1985 , 1988 ) .
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230.1~156.2m间为较长时段的湖泊沉积环境过程,在期间曾出现过短暂的河流沉积环境过程;
230.1m ~ 156.2m , mainly deposit of lacustrine facies , in which there is a short-term deposit of fluvial facies ;
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河流沉积单元分析与储层宏观非均质性作为消费品的建筑
The reservoir heterogeneity and analysis of sedimentary architecture in river deposits
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反硝化条件下河流沉积层中苯胺降解的微环境实验
Microcosm Study on Aniline Degradation in Weihe Riverbed Sediments under Denitrification Conditions
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促使辫状河流沉积油藏注聚见效的注采调整方式
Adjusting Injection-production Mode for Polymer Injection Response in Braid River Sedimentary Reservoir s
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太湖及其主要入湖河流沉积磷形态分布研究
Phosphorus species distribution of sediments in Lake Taihu and its main inflow rivers
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中侏罗世中期为河流沉积体系。
While in the mid epoch of Middle Jurassic stream sedimentary system occurred .
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大部分泥沙都是由河流沉积下来的。
Most of the sand and silt was carried down from the river .
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河流沉积体系既有辫状河相,也有曲流河相。
River sedimentary system includes both braided stream facies and meandering river facies .
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河流沉积包括辫状曲流河和高弯度曲流河。
The fluviation included braided meander stream and high curving degree meander stream .
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嫩江现代河流沉积层序及沉积模式
Sedimentary Sequence and Model of Modern Nenjiang River
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古代阶梯状曲流砂坝河流沉积的识别
Recognition of ancient stepped point - bar sediments
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大同盆地中侏罗世河流沉积体系及古河型演化
Fluvial Depositional Systems and River Pattern Evolution of Middle Jurassic Series , Datong Basin
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近代河流沉积与地震地层学解释
Recent river sediments and seismic stratigraphic interpretation
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江西赣江下游中支现代网状河流沉积
Modern anastomosed fluvial deposits of the middle tributary of the lower Ganjiang River in Jiangxi Province
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姚家组为一套中细粒辫状河流沉积。
The ore-hosting Yaojia Formation is composed of a set of braided stream medium-fine grained sediments .
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嫩江现代河流沉积体岩相及内部构形要素分析
Analysis on lithofacies and interior architectural elements of modern fluvial deposits in Nenjiang river , NE China
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研究结果表明,下石盒子组主要为一套近源网状河流沉积。
Research results show that Lower Shihezi Formation is mainly a set of proximal braided river deposits .
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底部砾岩形成于受古地形控制的砾质河流沉积环境;
The lower conglomerate developed in fluvial environment which originated from incised valley , obviously controlled by paleogeography .
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四川盆地西部晚三叠世须二段河流沉积特征探讨
A study on the characteristics of the fluvial sediments of the Late Triassic Xu-2 member in Western Sichuan Basin
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渤海湾中部南堡35-2地区新第三系河流沉积及油气勘探意义
Fluvial sediments and their oil-gas exploration significance of the Neogene in the Nanpu 35-2 area of Central Bohai Gulf
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其间出现3次低海面,均为河流沉积环境。
Additionally , in this period , 3 low sea levels occurred , resulting in the sedimentary environment of river .
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有机碳与水合金属氧化物对反硝化条件下河流沉积层中苯胺降解的影响
The effects of organic carbon and hydrous metal oxides on aniline degradation in weihe riverbed sediments under the denitrification condition
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该区的含煤地层虽包括碎屑-碳酸盐混合滨岸沉积、三角洲沉积及河流沉积三大类,但以河流沉积为主。
The coal-bearing strata comprise clastic-carbonate mixed shore zone sediments , delta sediments and fluvial sediments , with fluvial sediments predominating .
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两种砂岩体在表面上有相似性,如它们都是河流沉积的狭窄的线状砂体。
Both sand bodies may have superficial resemblances in that both are narrow , linear , and deposited by a river .
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鄂尔多斯盆地华池地区中侏罗统延安组延9油层组河流沉积及演化
Fluvial deposition and evolution of Yan 9 oil-bearing interval of the Middle Jurassic Yan'an Formation in Huachi area , Ordos Basin
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河北平原南部全新世河流沉积与浅层淡水及农业用水的关系
The relationship between water utilization for agriculture and shallow fresh groundwater and river deposit of Holocene epoch in Hebei Southern Plain
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侏罗系白垩系发育多套扇三角洲、流河道以及三角洲前缘砂体,是较好的储集砂体。一般地说,砂岩体似为河流沉积,可能是海岸平原上的分流。
In general , the sandstone body have been deposited by a river , possibly a distributary flowing on a coastal plain .