News tagged with fractures
UB examines violations in developing natural gas in Pennsylvania's marcellus shale
The University at Buffalo's Shale Resources and Society Institute today issued a report, "Environmental Impacts During Shale Gas Drilling: Causes, Impacts and Remedies," which offers the first quantitative data review of ...
May 16, 2012 |
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Fracking requires a minimum distance of at least 0.6 kilometers from sensitive rock strata
The chances of rogue fractures due to shale gas fracking operations extending beyond 0.6 kilometres from the injection source is a fraction of one percent, according to new research led by Durham University.
Apr 24, 2012 |
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'Inhabitants of Madrid' ate elephants' meat and bone marrow 80,000 years ago
Humans that populated the banks of the river Manzanares (Madrid, Spain) during the Middle Palaeolithic (between 127,000 and 40,000 years ago) fed themselves on pachyderm meat and bone marrow. This is what ...
Other Sciences / Archaeology & Fossils
Apr 24, 2012 |
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Fracking brings boom, fears to rural US
Underneath the ground in southwestern Pennsylvania, bedrock is put under explosive pressure to fracture and spill out its lucrative cache of natural gas.
Apr 22, 2012 |
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EPA to cut air pollution from natural gas 'fracking'
(HealthDay) -- The U.S. Environmental Protection Agency on Wednesday issued the first national standards to curb air pollution linked with the controversial practice of "fracking."
Apr 19, 2012 |
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As air pollution from fracking rises, EPA to set rules
The rush to capture natural gas from hydraulic fracturing has led to giant compressor stations alongside backyard swing sets, drilling rigs in sight of front porches, and huge flares at gas wells alongside country roads.
Apr 17, 2012 |
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Report to UK government backs fracking
(AP) -- Exploratory work to extract gas by hydraulic fracturing in England should be allowed to resume even though the technique has caused earth tremors, a report commissioned by the government said Tuesday.
Apr 17, 2012 |
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Study ties oil, gas production to Midwest quakes
Oil and gas production may explain a sharp increase in small earthquakes in the nation's midsection, a new study from the U.S. Geological Survey suggests.
Space & Earth / Earth Sciences
Apr 07, 2012 |
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Study shows air emissions near fracking sites may impact health
In a new study, researchers from the Colorado School of Public Health have shown that air pollution caused by hydraulic fracturing or fracking may contribute to acute and chronic health problems for those living near natural ...
Mar 19, 2012 |
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Reproductive problems, death in animals exposed to fracking
(PhysOrg.com) -- A new report has found dozens of cases of illness, death and reproductive issues in cows, horses, goats, llamas, chickens, dogs, cats, fish and other wildlife, and humans. It says these conditions could be ...
Mar 08, 2012 |
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Researchers challenge study on hydrofracking's gas footprint
(PhysOrg.com) -- A Cornell study's contention that hydraulic fracturing would be worse for climate change than burning coal is being challenged by another study, also by Cornell researchers.
Mar 05, 2012 |
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Polish report: shale gas extraction not harmful
(AP) -- A scientific study in Poland has found that shale gas extraction at one site produced some toxic refuse but that the waste was reused and didn't harm the environment.
Mar 02, 2012 |
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Study links ultrafast machine trading with risk of crash
(PhysOrg.com) -- In the United States, ultrafast trading in financial markets between 2006 and 2011 was the underlying factor for over 18,000 extreme price changes, according to a new study. Neil Johnson, ...
Feb 19, 2012 |
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Expert panel deliberates hydraulic fracturing in shale gas development
The use of hydraulic fracturing in shale gas development took center stage Friday as a panel of U.S. and Canadian experts discussed the contentious practice in a three-hour symposium hosted by the American Association for ...
Feb 18, 2012 |
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Fracking risks, fact or fiction?
A Simon Fraser University researcher known for his expertise on naturally occurring hazards will participate Friday in a shake down of the truth about a new form of human-induced earthquakes.
Space & Earth / Earth Sciences
Feb 17, 2012 |
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Fracture
A fracture is the (local) separation of an object or material into two, or more, pieces under the action of stress.
The word fracture is often applied to bones of living creatures (that is, a bone fracture), or to crystals or crystalline materials, such as gemstones or metal. Sometimes, in crystalline materials, individual crystals fracture without the body actually separating into two or more pieces. Depending on the substance which is fractured, a fracture reduces strength (most substances) or inhibits transmission of light (optical crystals).
A detailed understanding of how fracture occurs in materials may be assisted by the study of fracture mechanics.
For more information about Fracture, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
