Sediment
hideSediment is any particulate matter that can be transported by fluid flow, and which eventually is deposited.
Sediments are most often transported by water (fluvial processes) transported by wind (aeolian processes) and glaciers. Beach sands and river channel deposits are examples of fluvial transport and deposition, though sediment also often settles out of slow-moving or standing water in lakes and oceans. Desert sand dunes and loess are examples of aeolian transport and deposition. Glacial moraine deposits and till are ice transported sediments.
For more information about Sediment, read the full article at
Wikipedia.
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News tagged with sediment
California's Ancient Kelp Forest
Nov 10, 2009 |
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(PhysOrg.com) -- The kelp forests off southern California are considered to be some of the most diverse and productive ecosystems on the planet, yet a new study indicates that today's kelp beds are less extensive and lush ...
Past climate of the northern Antarctic Peninsular informs global warming debate
Space & Earth / Earth Sciences
Nov 06, 2009 |
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The seriousness of current global warming is underlined by a reconstruction of climate at Maxwell Bay in the South Shetland Islands of the Antarctic Peninsula over approximately the last 14,000 years, which ...
Geologists studying groundwater arsenic levels in India empower Bengali women, children
Oct 22, 2009 |
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A Kansas State University geologist and graduate student are finding that the most important tools in their fieldwork on groundwater arsenic pollution are women and children armed with pamphlets and testing kits.
Glacial melting may release pollutants in the environment
Oct 21, 2009 |
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Those pristine-looking Alpine glaciers now melting as global warming sets in may explain the mysterious increase in persistent organic pollutants in sediment from certain lakes since the 1990s, despite decreased ...
Diverting Sediment-rich Water Below New Orleans Could Lead to Extensive New Land
Oct 20, 2009 |
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(PhysOrg.com) -- Diverting sediment-rich water from the Mississippi River below New Orleans could generate new land in the river's delta in the next century.
Arctic lake sediments show warming, unique ecological changes in recent decades
Space & Earth / Earth Sciences
Oct 19, 2009 |
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An analysis of sediment cores indicates that biological and chemical changes occurring at a remote Arctic lake are unprecedented over the past 200,000 years and likely are the result of human-caused climate ...
Deep-Sea Microbes May Answer Long-Standing Question About Earth's Nitrogen Cycle
Space & Earth / Earth Sciences
Oct 15, 2009 |
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(PhysOrg.com) -- Scientists have identified an unexpected metabolic ability in a symbiotic community of deep-sea microorganisms. It may help solve a lingering mystery about the world's nitrogen cycle.
Study predicts Australian seabed response to climate change
Space & Earth / Earth Sciences
Oct 15, 2009 |
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(PhysOrg.com) -- CSIRO scientists have produced the first preliminary predictions of the potential impact of climate change on the Australian seabed.
Dino footprints enter record books
Other Sciences / Archaeology & Fossils
Oct 06, 2009 |
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French researchers on Tuesday said they had uncovered the biggest dinosaur footprints in the world, left by giant sauropods that may have weighed 40 tonnes or more.
Alfalfa sprouts hold the line on meandering streams (w/ Video)
Space & Earth / Earth Sciences
Oct 05, 2009 |
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(PhysOrg.com) -- Sinuous, meandering streams produce diverse and wildlife-rich habitats and are the aim of many river restoration efforts, but until now, the bank, water flow and sediment conditions required ...
Study shows more corn for biofuels would hurt water
Sep 28, 2009 |
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(PhysOrg.com) -- More of the fertilizers and pesticides used to grow corn would find their way into nearby water sources if ethanol demands lead to planting more acres in corn, according to a Purdue University study.
Researchers find high numbers of heat-loving bacteria in cold Arctic Ocean
Sep 17, 2009 |
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A team of scientists led by U of C grad Casey Hubert has detected high numbers of heat loving, or thermophilic, bacteria in subzero sediments in the Arctic Ocean off the Norwegian island of Spitsbergen. The ...
Report: Great Lakes toxic cleanups lagging badly
Sep 15, 2009 |
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(AP) -- A federal report says the government is moving so slowly to clean up the most polluted sites in the Great Lakes that it will take 77 more years to finish the job at the current pace.
Arctic exploration finds large underwater mountain
Space & Earth / Earth Sciences
Sep 10, 2009 |
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(AP) -- Joint U.S.-Canada exploration of the Arctic sea floor discovered an unusual underwater mountain and evidence that could boost the two countries' claims that their boundaries extend farther north. For the past two ...
Methane gas likely spewing into the oceans through vents in sea floor (w/ Video)
Space & Earth / Earth Sciences
Sep 02, 2009 |
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(PhysOrg.com) -- Scientists worry that rising global temperatures accompanied by melting permafrost in arctic regions will initiate the release of underground methane into the atmosphere. Once released, that ...
