diagenesis: The physical, chemical or biological alteration
of sediments into sedimentary rock at relatively low temperatures and pressures that can result in changes to the rock's original mineralogy and texture.
As wind and rain erode the mountain range, massive rivers carry more than a billion tons
of sediment into the Bay of Bengal each year; in some places, the layer deposited since the most recent ice age is more than one kilometer thick.
Not exact matches
Turbid waters spill out
into the Gulf
of Mexico where their suspended
sediment is deposited to form the Mississippi River Delta.
We recommend either pouring the beer
into a glass slowly, leaving the last bit
of sediment in the bottle or pouring half
into a glass, gently rousing the bottle or can, and then finishing your pour.
... no evidence it was, yet there it is... when you look at it, it in fact was not designed, but it was laid down over millions
of years... a sedimentary rock... the rock was not designed... maybe the PROCESSES that made the rock were desined... not really... gravity makes water flow
into the lowest ares and when the water moves more slowly,
sediment is dropped, forming rock... Still not seeing a designer... what about water... simple chmistry there, designed?
This is but a general fact that present projects must take
into account the legacy
of the
sedimented past, although the latter does not determine the shape
of the former.
When you pour the ginger syrup, make sure that the white
sediments at the bottom
of the container do not fall
into the sugar syrup.
Great gobs
of unconscious material drift
into sight, as if your hands were digging up the
sediment of memory with every stroke.
Data included in this presentation includes the Origins & Hydrogeologic Classification
of Sediments, Hypothesized Pathways
of PFOA Migration
into the Village
of Hoosick Falls well field, an Interpretive Cross Section through the Village Well Field, and more information.
The small time increments scientists were able to capture in the cores are due to the large amounts
of sediment that empty
into the Gulf from rivers in Mexico and North America.
The proposed end to «pulse trawling» — in which short bursts
of electricity get flatfish out
of the
sediment and
into nets — is a major disappointment to Dutch fishing companies, which have invested heavily in the technology; they claim it's less damaging to marine ecosystems than traditional bottom trawling and saves energy.
Specifically, they have found unnaturally high levels
of antibiotic resistance genes in
sediments where the river comes
into contact with treated municipal wastewater effluent and farm irrigation runoff as it flows 126 miles from Rocky Mountain National Park through Fort Collins and across Colorado's eastern plain, home to some
of the country's most densely packed livestock operations.
Weaknesses in the field are believed to be created by «slab graveyards» — ancient pieces
of crust and
sediment that were pushed down
into the Earth when plates collided and are now falling through the mantle.
Cohen and his colleagues figured out the lake's environmental history 1,500 years
into the past by taking cores
of the lake's bottom
sediments and analyzing the biological and chemical history stored in the
sediment layers.
Led by Ken Buesseler, a senior scientist and marine chemist at the Woods Hole Oceanographic Institution (WHOI), the team found that a small fraction
of contaminated seafloor
sediments off Fukushima are moved offshore by typhoons that resuspend radioactive particles in the water, which then travel laterally with southeasterly currents
into the Pacific Ocean.
«We know the
sediments are
of deep sea and terrestrial origin, including those eroded from the high Himalayas and transported thousands
of kilometres
into the Bay
of Bengal and eastern Indian Ocean.
And so a team
of marine
sediment experts has set up shop on the Nathaniel B. Palmer, hoping to sink great hollow cores deep
into the ocean off Antarctica.
Rain water is shunted
into storm drains, pushing the contaminated
sediment downstream and delivering a fresh load
of toxic runoff and snowmelt from city streets to Little Black Creek.
He and colleagues thought that the answer to the floodwater question might also lie in the lakes» moraines — piles
of sediments bulldozed by glaciers
into high ridges that act as dams.
«This ocean drilling expedition will for the first time drill scientific boreholes within the
sediments entering this subduction zone, including the layer
of sediment that eventually develops
into the earthquake - generating fault,» Professor Henstock explained.
The clues for humanity's entrance
into the Anthropocene, he says, lie in the traces we've left behind in layers
of sediment and soil.
Previous ocean
sediment records suggest that, as the world slipped
into the last glacial period, less carbon overall reached the
sediments of the Southern Ocean, coinciding with declining atmospheric carbon dioxide.
The temperature increase triggered a chemical transformation within the
sediment, pushing water out
of the mineral crystals and
into tiny pores between the grains.
That's because while the dams stopped new
sediment flowing
into the river, vast quantities
of sand were already trapped in riverbed dunes downstream
of the dams (Nature Geoscience, doi.org/sfr).
The rocks were
of sandstone, siltstone, and shale: thin layers
of sediment, each layer representing a year, or 10, or 100 — I had no idea — welded by time
into varying degrees
of solidity.
Higher lake temperatures may speed the conversion
of carbon - rich organic matter in lake
sediments into methane and carbon dioxide, gases that once released
into the atmosphere could exacerbate global warming.
Falling water levels have exposed fine - grained
sediments along the periphery
of the lake; high winds whip up those
sediments into nasty clouds
of dust that cause health problems for residents throughout the region.
But engineering
of the river to make it better for shipping has caused much
of its
sediment to flow
into deep water.
The proposed end to «pulse trawling» — in which short bursts
of electricity get flatfish out
of the
sediment and
into nets — is a major disappointment to Dutch fishing companies, which have invested heavily in the technology; they claim it is less damaging to marine ecosystems than traditional bottom trawling and saves energy.
That may in turn have caused the planet to heat up enough to melt deposits
of methane frozen in
sediments on the ocean floor (something, incidentally, that could happen again), discharging even more potent greenhouse gases
into the atmosphere and further heating the planet in an escalating feedback loop.
To further refine the probability estimates, they took
into account past (prior to recorded history) tsunamis — evidence
of which is preserved in geological layers in coastal
sediments, volcanic tephras, and archeological sites.
Islands that are atolls, with foundations
of coral
sediment, could crumble
into more acidic seas, experts say.
Past analysis suggested these fish were adapted for burrowing
into sediment, but new specimens hint that some
of them have evolved for a more specialised lifestyle.
And last fall's Hurricane Sandy along the U.S. East Coast has kept USGS scientists hopping, assessing storm surges, the effects
of erosion, and the pulses
of sediment and pollutants thrust
into waterways by the storm.
One
of those more lasting — and even less appealing — problems: sewage,
sediment and other pollutants churned up and swept
into waterways by the storm.
Dr Lewis's research
into the geology
of the site has provided vital information on the
sediments in which the prints were found.
And, unfortunately, the microbes» speed is limited not by the availability
of oil — or even its droplet size, which is why chemical dispersants have been used to break up the oil
into microbe - friendly globules — but by the availability
of various nutrients, such as nitrogen and phosphorus that wash
into the ocean via rivers carrying
sediments from the continents.
The researchers found the chironomids burrowed
into the
sediment, moving water and oxygen
into the
sediment and increased the levels
of nutrients released
into the
sediment porewater and water column.
Dr. Hoffmann: «The isotope Hafnium 176 in contrast to its counterpart Neodymium 143 was transported by means
of weathering
into the oceans and became part
of iron - rich
sediments on the sea floor 2,700 million years ago.»
The grains settle
into a layer
of cryoconite
sediment on the bottom.
By looking at how concentrations
of chemical elements in the
sediment change with depth, the researchers can develop a continuous record
of how much surface runoff poured
into the lake.
If a dinosaur stepped through mud instead
of sand, the prints themselves wouldn't survive as fossils; because
of its high organic content, mud turns
into crumbly coal when compressed beneath other
sediment layers.
A photosynthetic microorganism was turned
into fuel without having to die, be buried in
sediment and cooked by eons
of geologic processes
into petroleum.
The purpose was to create a bathymetric picture
of the sea bottom and to collect reflection seismic data, which allows researchers to peer
into the
sediments and rocks underneath the seafloor.
They were 75 miles west
of the Crimean city
of Sevastopol, 750 feet above an undersea slope along which
sediment from the Dnieper River cascades down
into the depths.
For 2 months in 2013, the JOIDES Resolution, the ship for the International Ocean Discovery Program, drilled
into the ocean floor
sediments, retrieving cores
of mud and rock that were then dated.
The climate reconstructions take
into account a variety
of gauges found in nature, such as tree rings, ice cores, and lake
sediments.
The flume will also provide new insights
into natural processes such as
sediment transport along shorelines and the mechanical properties
of coastal soils, López Lara says.
In 1991, the IMO adopted guidelines which recommend that ships should avoid taking on ballast in shallow areas and during toxic blooms
of marine algae; keep accurate records
of where and when ballast is loaded; exchange ballast water at sea, where toxic organisms are rare; and discharge
sediments into approved areas at the port
of destination («End
of the line for deadly stowaways», New Scientist, 24 October 1992).
In another fossil (middle panel), which contains skin and unusually long claws,
sediment snuck
into the lizard's body during fossilization and created a mold
of some bones.