sediment

The deepest sediments were laid down in the distant past, while more recent sediments were nearer the surface.

Multi-techniques were applied to characterize the surface interactions for organic and inorganic windings of marine sediments.

The total volume of sediments carpeting the ocean bottom has turned out to be surprisingly small.

Measurement of photosynthesis in sediments and macrophytes cannot be undertaken by means of any single procedure.

All that gas buoys up through the sediments and into the ocean, heating up the deep waters.

"There was active-enough chemistry in the sediments that the decay process didn't occur as quickly as the mineralization process, " he said.

The wires transport electrons from bacteria in deeper, oxygen-poor sediments to bacteria in oxygen-rich mud near the surface.

The question of virus occurrence and survival in sediments was addressed only after improved detection methods were at hand.

A case study of burrowing crab effects on the surface sediments in the Yellow River Estuarine intertidal zone has been made.

During the Upper Cretaceous much of the area was covered by these sediments, they were, however, eroded to a considerable degree.

After placement of the bottom stopper, the valve on the top stopper was closed and the core was withdrawn from the surrounding sediments.

typical mountain-building episode, a thick section of sediments, deposited in a geosyncline along the margin of a stable block, is crumpled.

And, at this point, traces of industrialization can only be found in sediments in Europe.

Consequently, remediation of sediments contaminated by refractory organic pollutants is one of the urgent environmental issues at present.

However, active faults are usually developed in soft sediments, and sometimes do not leave any macroscopically observable trace.

They took root in the limy sediments which had been carried down from the tops of the hills and they became plants.

The abrupt decrease in transporting power causes a stream to drop most of its load of sediments near the base of a mountain.

Some of the very flat-bodied Ediacarans, for instance, lived on sediments and appear to have fed by directly absorbing nutrients by osmosis.

So this rainwater is flooding down the hillside, carrying with it sediments from the construction site, smothering the coral and killing it.

Water seeping through typically dry sediments had darkened the surface, especially in the west.

Part of the boundary P within the sediments can be released to the sediment interstitial water by decomposing or dissolving.

For instance, salt domes appear as negative anomalies because rock salt is of a lower density than all consolidated sediments.

But it's beneath these clays that a local who was walking his dog found a handaxe, embedded in these organic sediments.

Over time, these sediments became the standard down the company's core competitiveness.

Corals may also have trouble coping as sea level rises and stirs up sediments, said Kimberley Yates of the U. S. Geological Survey.

And created by the conditions of flow at the dynamic interface between a body of cohesionless sediments particles and a fluid.

The sediments would release a lot of nutrients normally locked up in permafrost into freshwater cycles.

The sediments are the important reservoirs of mineral nutrients and sedimentary P can function as a main internal P source for the lakes.

the main form of inorganic nitrogen in sediments was of ammonia, and the submerged plant cannot change this case.

Correlation analyses indicate a strong fixation ability of iron minerals to metals for soils and sediments.

As the river flowed, it washed away sediments and removed weight pressing down on the Earth's crust.

One of these polarity flip-flops, known to have occurred 4. 18 million years ago, left its mark in sediments in the CAC.

In a new study in the journal Nature, Mulitza and his colleagues studied ocean sediments off the coast of Senegal and Mauritania.

Soil organic pollution and sediments of Plant - microbial remediation were the forefront topics of international environmental scientific.

If the peat is not drained, however, but is buried under relatively impermeable sediments, its geological preservation becomes possible.

Organochlorine pesticides(OCPs)in sediments and sewage irrigated area soils from Urumqi Shuimohe river were determined by means of GC-ECD.

Authors discussed the cave sediments-speleothem in particular and its relativity on the base of cave formation characteristics.

He argues that human activity has not been reflected in the simultaneous formation of sediments worldwide.

The nearly black structures are almost certainly dunes made of volcanic ash-rich sediments.

BSR is found with reversed polarity, compared with the seabed, and to cut across the sediments reflectors in the migrated profiles.

The land is made of recently deposited sediments that are settling.

They exist all over the globe, living in lake and pond sediments and in ocean coastal regions.

The authors introduce the research results of identifying gas hydrate from sediments, bottom water and lower atmospheric layers.

Polychlorinated organic contaminants in waters, suspended solids and sediments of the Nanjing section, Yangtze River.

The sediments of upstream region stemmed from Tengger Desert, its south. so its sand substance was transmitted from its neighbor.

Sediments washed into the basin from both the fore-arc ridge and island arc weigh down the crust in this area, creating the depression.

Sediments illite crystallinity measurements showed that the ancient humid climate had gradually changed from the evolution of drying.

Some fossils can be extracted from these sediments by putting the rocks in an acid bath.

Research of this area was focused on the relation of sedimentary basin stratigraphy and fossil egg succession in the sediments.

The floor of Goat Paddock Crater is covered by sediments deposited since the Pleistocene Epoch.

The anomaly of hydrocarbon-digesting bacteria in sediments can effectively indicate and predict the potential information underground.

As an important river in the world, the sediments of the Red River has been paid little attention for the elemental geochemical research.

is not formed by the transformation of organic matter in sediments have already been noted and are examined in more detail.

Some researchers believe that bacteria in ocean sediments are connected by a network of microbial nanowires.

The sediments after soaking. Used for dyeing.

Static adsorption experiments were performed to investigate the adsorption characteristics of ammonium on soils and ditch sediments.

Using Excel as the tool of data processing, the spatial distributions of heavy metals were investigated in Taiyu river sediments.

Investigation on the distribution of copper in sediments and fishes at Kaohsiung River and its Harbour, Taiwan.

The coarse sediments have generally accumulated along the continental margins.

Sedimentary bauxite bonanza was formed in stable sedimentary environment with unsolvable medium of sediments under acid condition.

Sediments were demonstrated to have mainly come from metamorphic basements on the north and west.

This makes carbonate sediments on the floor of the ocean that are subducted back into the Earth though plate tectonics.

The distributing characteristics of organochlorine compounds contaminants in sediments of Pearl River Delta and nearby sea area .

A delta is a deposit of sediments that forms near the junction of some rivers with a standing body of water .

The bioavailability of heavy metals (HM) in soils and sediments could be evaluated by single chemical extraction methods.

By applying COulometric principle this paper designs an instrument which can analyse automatically the content of carbonate in sediments.

Carbonate sediments in all environments are basically products of an ancient biochemical system.

The in situ acoustic measurement technique of marine sediments is the advanced technique in measuring the accurate acoustic properties.

Several skeletons of another early whale, Basilosaurus, were found in sediments left by the Tethys Sea and now exposed in the Sahara desert.

We knew that any sediments preserving footprints might also contain bony remnants of the track makers.

Seismic facies analysis indicates that late Cenozoic sediments were deposited mainly in the fluvial-nearshore environments.

The allochthonous deposition mainly includes the gravity current settled sediments and the tractive current settled sediments.

Slope fan is one kind of sediments of the gravity flows. It emerges more frequency in the marine strata.

Sediments that remain are collected in the necks of inverted champagne bottles after the bottles have been carefully turned.

After the glaciers retreated again, fresh rivers cleaned out the sediments and continued carving away at the bedrock.

The hydrocarbons pollution and its sources in the sediments of the Yellow River delta.

This movement forms valleys where sediments and decaying organic matter can collect, ultimately becoming oil reservoirs.

The Feixianguan Formation of evaporative carbonate platform is a set of sulfate-bearing evaporative tidal sediments with aboundant dolomite.

Mixed sediments are commonly sedimentary complexes generated by diverse patterns of mixed sedimentation.

The relatively high bio-availability of mercury in the sediments indicated certain potential hazard to the mangrove ecosystem.

Mercury cycling in aquatic systems is a complex problem, and aquatic sediments are a major sink for mercury.

With rise of base level, sediments showed retrogradation features, in contrast, with drop of base level, sediments had progradation.

some of the water ponded in the crater , forming the layers of hematite - bearing sediments.

Mesozoic sediments into Northwest China's largest lake in Qingyang, involving Shaanxi, Gansu, Ningxia, Mongolia, the vast vast.

According to a report in Discover Magazine, Borgonie and his team may next look for nematodes in the sediments beneath ocean floors.

abyssal-bathyal sediments composed of radiolarian siliceous rocks, turbidite and limestone.

The fossils were found in a seam of limestone that was 50 feet thick and was created when ocean sediments solidified millions of years ago.

In a word, marine sediments has become the main reservoir of persistent and poison chemical pollutants in marine environment.

Before blasting, the surfaces shall be free from grease and developing corrosion sediments.

The results showed that the sediments on silk fibers were mainly scale like and needle-like hydroxyapatite crystals.

The results showed that the sediments on silk fibers were mainly scale like and needle-like hydroxyapatite crystals.

Through sequence stratigraphy, widely-separated sediments that occur between correlatable unconformities could be compared with each other.

That vastly increases the volume of sediments the hot rock can cook and from which methane and other carbon-rich gases can be released.

It easily removes all types of contamination (vanish, oil and gasoline films, scales, sediments, and dust) from the fuel system of a car.

However, investigation on the loess and the aeolian deposits, compared with the lacustrine sediments, is limited and weak in this region.

It has a widen plan view. Exposures with typical parallel bedding sediments were found at fan head.

Influenced by alternative tectonic background, eustatism and sediments supply, the Late Palaeozoic depositional system types are diverse.

The results showed that water conservancy project reduced the sediments transported to the River, and the delta eroded intensely.

For some sediments and flow the flat bed does not occur and the bed form goes directly from dunes to antidunes.

They found that contamination was most likely in very young sediments, deposited before the last Ice Age.

and shook sediments that were prone to "liquefaction, " which can magnify the damage done by the ground shaking.

The sediments are characteristically very fossiliferous.

Through that summer and fall, the team searched for toxic or radioactive pollution in river sediments, groundwater, soil and air.

We found that concentration areas of . glauconites are identical with the oxidizing environment, coarse-sediment areas and relict sediments.

Ice from glaciers and sediments beneath our feet keep a catalog of temperatures hidden in their chemical composition.

Martin Kennedy and colleagues analysed hundreds of samples of ancient marine sediments from south Australia.

There's a story in the sea, in the waters of the sea, in the sediments and the rocks of the sea floor.

The sample types include rock sample , stream sediments , water samples and rarely, widely spaced soil samples .

The Upper Jurassic , Cretaceous and Quaternary sediments are mostly siliciclastic and have the character of platform cover.

In Costa Rica and Mexico, these markets let water users compensate upstream forest owners for reducing sediments in rivers.

These rocks, and others throughout the equatorial region, are rich in sulfates , a telltale sign of water-lain sediments.

Pluvial alluvial sediments also have magnetite and hematite, but magnetite is comparatively more.

Coal exploitation leads to the Fe Mn accumulation in the sediments and seasonal secondary pollution in the waters in Lake Aha.

The effect of the remediation of water body by the technology of aerating sediments was studied with sediments from city river as material.

The role of surface coatings on sediments in Sediment: Water partitioning of trace elements and radionuclides.

These findings are representative examples of long-term contamination of lake sediments caused by the contaminated ground soil erosion.

Sediments choke some stretches of the Yellow, hindering its ability to flush out pollutants.

And the Hyperbolic tangent function curve is used to simulate the sediments wide grading curve of the mountainous river.

Near shore turbidite fan and typical turbidite rock are deposited on well developed deep lake facies sediments in this area.

Its tool arsenal includes sensors for measuring thermal vents and coring devices for sampling sediments.

Unlike the reddish-tan sands comprising the dunes directly south of the Kuiseb River, the stream-channel sediments are lighter in color.

Methane is formed in freshwater by microorganisms degrading organic matter in the sediments in the absence of oxygen.

In these basins, there are Meso-Cenozoic thick sediments, with favourable conditions for the formation and accumulation of petroleum.

A significant source of surface water contamination may be contaminated sediments.

The highest levels of these compounds are found in some soils, sediments and food, especially dairy products, meat, fish and shellfish.

We had assumed that the lake-bottom sediments might contain markers of the Tunguska event.

In most sediments the biomass production of chironomids was also lowered.

Contaminated sediments generally contain persistent contaminants and are difficult to clean up.

Oligocene erosion had truncated the sediments draped over the dome.

Compared with sediments from other areas, OCPs concentrations in sediments were much higher in the studied area.

Calcareous sediments accumulated on a sea floor and eventually were compacted and cemented to form limestone.

Analysis of sediments deposited in various major weather events also confirms the conclusion.

Dr. van Hoof has examined sediments that appear to suddenly change from agricultural pollens to forest debris.

The phosphorus immobilization on sediments was studied under the laboratory conditions with sediments re-suspension.

This work dealt with the feasibility of using the method HPLC to determine the element sulfur in lake sediments.

With the rise and fall of datum plane, sedimentary centre of sand stone moved towards sediments source or basin.

Clay minerals in sediments had some ancient environmental significance.

Another example is the Himalayan peak on the sea shells found in sediments.

Gray and white materials within the lake bed are exposed sediments and salt crusts.

In chapter 2, first part is the deduction of the spheric cavity expansion theory adapt to the seabed sediments sampling.

Waste mercury in liquid form enters river sediments and vegetation, poisoning local food chains.

The necks of the bottles are then frozen and the corks removed to disgorge the accumulated sediments.

Quaternary sediments of this area come from complex rock of north-west of Longmenshan Nappe Tectonic. 2.

The paper reviews the stream pollution problem caused by sediments at home and abroad, and summarizes the research progress in this field.

VANISHING ICEIn the sediments of Arctic lakes, researchers found evidence that numbers of sulfate-reducing bacteria are growing.

As a protective colloid, it can prevent droplets and particles from coalescing and agglomerating, thereby inhibiting formation of sediments.

the contents of different forms of nitrogen in surface sediments at stations in the Yellow Sea Trough were higher.

The winds are hot and dry as they pass over Namibia's coastal plain, where they are prone to stir fine sediments.

Authigenic pyrite is the normal product of anoxic sulfate reduction in marine sediments.

The sediments containing mainly insoluble constitutes and dissolution of a long time lead to low TDS of the groundwater.

Eutrophication , or the "dying of lakes" , is a natural process resulting from the addition of nutrients and sediments.

A two-dimensional axisymmetric finite element model of sampling tube and sediments is built.

Organic brown sugar and the milk's protein binding, producing degeneration of harmful sediments.

The ancient lake lines are distributed extensively at north foot of Mt Bayankala, also the lake sediments and lacustrine topography.

Loose sediments may be changed into solid sedimentary rocks.

For the first time they are bringing up sections of the Mesolithic village from the seabed and going through the sediments .

Lava injected into deep sea sediments is baking sediments and driving out greenhouse gases.

Builders can help the effort by curtailing the runoff of sediments from construction sites.

The sediments are rich in clay, which forms when water weathers rocks into fine-grained particles.

The contribution of distribution to sorption of p-nitrophenol into sediments.

Sources and transportation of pollutants in the sediments in the near-shore areas are analyzed.

To investigate the protective effect of ethanol sediments from Codonopsis lanceolata on alcoholic hepatic injury.

Particle sizes of the gut contents and the natural sediments were analyzed and compared by using CILAS 940L Laser Particle Size Analyzer.

Soil quality. Soils, sediments. Total solubilizing by acid attack.

The factors which affect P release from sediments and the release mechanisms are briefly sum. . .

Distribution of heavy metals in the sediments from the Grand Canal (Hangzhou section).

During the abandonment period of delta, sediments of delta front were usually rebuilt by tidal action.

Plants and animals formed the limestone in mountains whose sediments make our bones.

Heavy metals in marine sediments can cause many serious pollution problems.

The ratio of iso-to normal butane is high in immature sediments and decreases in mature sediments.

For the first time, this paper reports the variations of contents of noxious elements from sediments in the lakes of Fujian Province.

Where are all the sediments that appear to have been eroded from Meridiani Planum and places such as Gale Crater?

The Beier depression, which is located in the Hailaer basin, is a Cretaceous faulted depression with terrestrial sediments.

Aquolie-chemical condition is the main factor to affect heavy metal release from sediments.

Soft thick sediments will amplify the shaking, and hard rock will not.

It is concluded that environment controlled the components of biomarker in sediments.

The water quality and nutrient saline levels in sediments of 17 lakes in Anhui Province were investigated and evaluated.

Sandy sediments extensively developed in the west coast of Hainan Island.

Fan delta sediments developed well in the northern area of Turpan Depression.

Vertically, there are coarse-fine-coarse gradations in the grain sizes of the sediments from bottom to top.

Its colour is muddy and the bottoms of the bottles remain nature sediments.

In addition, some geological applications of ESR dating of the sediments were introduced.

The layers under coal seams in the study area generally containing fluvial sediments suggested that the coal developed in fluvial system.

Magnetic properties of tidal flat sediments of the Yangtze Estaury, and the type, grain size and source of magnetic minerals.

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

In some areas, coarse sediments can fill channels of streams or rivers that cut through finer grained sediments or rocks.

The clastic sediments are predominantly derived from the felsic volcanics, some basic to intermediate volcanics and minor sediments.

The benthos -- the animals living on and in the sediments -- populate this vast ecosystem.

above, except partially exposed bedrock, the majority of area was covered by silt and other sediments.

Rust removing grease and dust ministries sediments.

The sediments of Terminal Lake stemmed from Badain Jaran Desert, which transmitted with west wind far away from Minqin Oasis.

The sediments have deposited over a comparable period of time.

What we're learning about - how the ice moves and how it moves over its sediments underneath it.

More than 99 % of pores and cavities in rock or sediments below the water table are filled with water .

Regularly clear plastic bin sediments so that heating temperature falls short of requirements.

It is quite important how to evaluate the methane hydrate resource in marine sediments accurately.

"We had to switch sponges after every five to six dives because they were torn to bits by the sediments, " Patterson says.

There is a variety of environmental information contained in the river sediments.

The writer has borrowed freely from papers about sediments.

Sediments there are finely layered enough for scientists to distinguish changes from year to year.

the sediments are high water content, low bearing Capacity , short formation time and weak consolidation.

In addition, the sediments also transport into the North Branch from the adjoining sea area.

They found exactly that: In eight of the study lakes, the amount of inorganic sulfur in the sediments had increased steadily since 1980.

Concentrations of heavy metals in sediments of the Gulf of Finland and the Gulf of Bothnia were studied during 1991-1993.

She scooped out the yeasty sediments.

And, they add, the observed sequence is also reliable; the sediments have not been mixed up after the tools were dropped.

However, conventional measurements can not effectively distinguish them in the low concentrations typical of soils and sediments.

The low-disturbance sampling of seafloor sediments is very important to ocean science researches.

When deposited, 70-80% of the volume of muddy sediments may be water.

Deep sea sediments, covering more than 60% of the earth .

Many marine bacteria generate energy by oxidising the gas hydrogen sulphide, which is common in ocean sediments.

The sediments belong mainly to silts .

Very great strides in sampling ocean-floor sediments were taken in the late 1960' s.

Why are sediments always found in my electric kettle?

According to data obtained in recent 15 years, PGE abundances in the earth's crust, crustal rocks, and sediments are given in this paper.

Runoff index and sediments gradually increased with all kinds of land use, when the slope gradient was increased.

Many Lake Ladoga sediments caused high mortality of midge larvae in 10-d growth and 40-d emergence tests.

Native plants and animals in difficult-to-reach locations, such as deep-sea hot vents and seabed sediments, have hardly been documented.

In addition, sediments that may date back to more than 130, 000 years ago contain vast quantities of processed ochre, some in crayon form.

Anlelin Formation and Xiushui Formation are continous sediments, and hence "Xiushui Movement" is believed to have not been in existence.

Marine carbonate sediments with large-thickness and gas shows are distributed widely in China.

It lived around 125 million years ago, based on the dating of radioactive elements in the sediments that encased the fossil.

Think of a rose from March, has been in the deep sediments of the years in my memory the deep dust.

The exchange mechanism between coarse and fine sediments in the river has been demonstrated theoretically.

But echinoderms apparently deliver more carbon to the sediments than do forams, for example.

The sediments in question are over 400 m thick and have an area of around 20 sq km.

The discovering of anatase and barite minerals in the surface sediments of the East Pacific and its significance

Trace Elements and Their Environmental Problems within the Surface Loose Sediments in the Major Cities of Guizhou Province

The surface textures of the quartz grains indicate that the sediments are mainly embouchure environment ;

The elemental geochemistry of the surface sediments in the Chukchi Sea and its adjacent areas

The Distribution of Heavy Metals in the Surface Sediments in Parts of Rivers and Lakes in Jilin Province

The distributions and origins of the light clastic minerals in the surface sediments of the Eastern South China Sea

What we see when we look back in time in those sediments and rocks is a record of Earth history.

Foraminifera in the surface sediments of the Bering and Chukchi Seas and their sedimentary environment

Discovery of Spheric Dolomite Aggregations in Sediments from the Bottom of Qinghai Lake and Its Significance for Dolomite Problem

Distributions of Rare Earth Elements and Provenance Relations in the Surface Sediments of the South Yellow Sea

Distribution of the Carbonate Clast Size and the Provenance Analyses of the Surface Sediments in the Northern East China Sea

Distribution of organochlorine pesticide in the surface sediments of the mud areas in the East China Sea

Distribution Characteristics of Nutrients in the Surface Sediments of Yangtze River Estuary

Distribution and source of polycyclic aromatic hydrocarbons in the surface sediments of the mud areas in the East China Sea

Sediments of the Bottom Aquifer bearing gravel of thick Cenozoic formation in Huaibei-Huainan Coalfield

Geochemistry and Environment of the Cadmium in the Soil and Sediments at the Surface of Guizhou Province

Studies on Grain-Size of Surface Sediments and of Dynamic Sedimentation in the Northern Part of the Mouth of Hangzhou Bay

The Environment Sedimentological Study of Erhai Lake-Correlation between nutrients and particle size distribution in superficial sediments

This paper thinks that the micro-stalactite is fresh-water sediments from which sedimentary features and genesis.

On the Microwave Preparation Method to Determine the Total Phosphorous in the Sediments of Lakes and Seas

An evaluation on heavy metal contamination in the surface sediments in Bohai Sea

The Correlation between the Content of the Different Grain Size and Magnetic Susceptibility in Lacustrine Sediments, Nihewan Basin

Study on Minerageny of the Surface Sediments Collected from the Mid-Okinawa Trough

Organic carbon isotope records of the Poyang Lake sediments and their implications for the paleoclimate during the last 8 ka