查询词典 sediments

The morphology of these grains reveals that the iron sulfides originated from the eluvium loam above hypothetical ore deposits in the vicinity of the section or glaciofluvial sediments from nearby glacial margins.

磁性矿物颗粒的形貌特征进一步揭示Znojmo地区黄土/古土壤所含黄铁矿或磁黄铁矿主要由附近源区搬运而来，冰缘沉积物和周围台地的风化剥蚀物是黄土物质的主要来源。

The delta proper began developing in the Eocene, accumulating sediments that now are over 10 kilometers thick.

三角洲的形成开始于始新世，现在沉积物积聚了10千米的厚度。

To investigate the pollution levels, occurrence and distribution of estrogens, six estrogens in the surface sediments of Wenyuhe River were analyzed quantitatively by GC/MS following ultrasonicated extraction including diethylstilbestrol, estrone(E1),β-estradiol(E2), 17α-ethynylestradiol(EE2), estriol(E3), and β-estradiol 17-valerate. Six estrogen concentrations ranged from 0.39-36.6ng/g and the mean concentration was 10.2ng/g.

为了调查温榆河沉积物中雌激素物质的污染状况，采用超声萃取、GC/MS法研究了6种常用雌激素（包括己烯雌酚DES、雌酮E1、雌二醇E2、乙炔基雌二醇EE2、雌三醇E3和戊酸雌二醇EV）在北京温榆河上游及干流表层沉积物中的含量水平，并对其分布及来源情况进行了分析。

In terms of environmental hydrodynamics, more and more attention has been attached to pollutants release characteristic from sediments in estuary area.

在环境水动力学中，河口地区的河流底泥污染物释放扩散特性的研究越来越受到人们的重视。

In the prodelta, the fine sediments spread around with the help of floatage and settle down under the force of gravity.

整体上，扇三角洲的形成是一个沉积物不断前积和垂向加积的过程，湖平面变化不同，二者作用强度不同，致使扇体形态有所差异，但扇面各部分基本维持相对固定的坡度，且沉积物的整体粒度分布趋势一致。

In this area seven microfacies in the Chuangde Fm. red beds can be separated. They are: 1 reddish foraminifera grainstone; 2 reddish microfossils packstone/wackestone; 3 reddish marlstone with microfossils; 4 reddish marlstone; 5 red to variegated floatstone ; 6 reddish shales; 7 reddish radiolarite/ radiolarian chert.In the Yamudok Cuo area, it can be distinguished six microfacies in the redbeds including 1 reddish foraminifera grainstone; 2 reddish microfossils marlstone; 3 reddish shales; 4 yellow-grayish floatstone ; 5 reddish radiolarian chert; 6 reddish chert with radiolaria. The depositional environment of the Chuangde formation can be interpreted from sediments composition, as is deep oceanic basin adjacent to continental slope/rise. The slope/rise setting is indicated by the occurrence of olistoliths and slumped pelagic/hemipelagic limestone, present near the top of the Chuangde Fm.

进一步资料对比研究表明，全球上白垩统海相红层具有以下特征：a上白垩统红层出现在北大西洋、阿尔卑斯、喀尔巴阡、土耳其，向东一直到特提斯喜马拉雅地区和澳大利亚西北角的Exmouth海底高原，横贯整个特提斯和北大西洋；b沉积环境以外陆棚-斜坡和盆地为主，在斜坡环境下多发育有浊流沉积，如Scaglia Rossa和Nietrental组；c有机碳含量普遍很低，0～0.3％之间；d盆地相仅发育红色泥质岩，而斜坡和远洋环境下不仅发育红色页岩，同时还有红色泥灰岩、红色灰岩和红色硅质岩；e北大西洋和地中海地区在Cenomanian-Turonian界线黑色页岩之后不久的Turonian早期就出现红色沉积，而藏南出现在Santonian早期，Exmouth出现在Campanian早期，红层出现似乎有"西早东晚"的趋势。

Man-made radionuclide of Cesium-137 can be as environment tracer to research the sediments on river floodplain s.

人工同位素137Cs可以作为环境示踪因子研究河漫滩沉积物。

The basin sediments include volcaniclast and deep-water deposit from arc and terrigenous flysch deposit.

盆地沉积物包括来自岛弧的火山碎屑、深海沉积物和陆源复理石沉积。

During the Neoproterozoic to the Early Paleozoic, the South China was a marginal basin captured by the Yangtze active continental margin, filled with very thick flysch, sandstone, and shale sediments.

华南新元古代到早古生代是扬子活动大陆边缘构造"捕获"的一个边缘海盆地，其间充填了巨厚的复理石、砂、页岩沉积。

Based on the analysis for these characteristics and vertical evolution、sedimentary process, it is raised that Nanduan formation is a set of proximal wide-ranging-happening (no-fan model) grain flow、turbidite and shelf sediments in the wave-control delta front slop and deep shelf environment, and is not abyssal flysch suite.

在对这些特征及垂向演化、沉积机理分析基础上，提出南段组为一套浪控三角洲前缘斜坡至深陆棚环境中的近源片泛性颗粒流、浊流及正常陆棚沉积，并非深海复理石建造。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。