Quantcast

Latest Sedimentology Stories

freshwater marsh vegetation
2014-08-27 03:00:52

Steve Hinnefeld, Indiana University Research by Indiana University geologists suggests that an intermediate amount of vegetation -- not too little and not too much -- is most effective at stabilizing freshwater river deltas. The study, "Optimum vegetation height and density for inorganic sedimentation in deltaic marshes," was published online Aug. 24 by Nature Geoscience. The findings may help guide restoration of river deltas, such as those near the mouth of the Mississippi River,...

2014-06-06 12:21:42

ST. LOUIS, June 6, 2014 /PRNewswire/ -- Arch Coal, Inc. (NYSE:ACI) today announced that its Thunder Basin Coal Company subsidiary earned top honors for reclamation excellence from the Wyoming Department of Environmental Quality (DEQ). http://photos.prnewswire.com/prnvar/20120727/CG47668LOGO The 2014 State of Wyoming Reclamation Award was presented to Thunder Basin's Black Thunder and Coal Creek mines. "The Black Thunder and Coal Creek personnel take pride in the amount of wildlife...

2014-05-30 23:07:57

Transparency Market Research added a new report "Global Coal Market: Size, Share, Trends, Analysis and Forecasts 2012 - 2018" to its report store. Browse the full report: http://www.transparencymarketresearch.com/coal-market.html. Albany, New York (PRWEB) May 30, 2014 Coal plays an important role in power generation all over the world and is one of the main power sources for generation of electricity today and it is expected to remain so for the next 30 years. Demand for coking...

2014-05-12 16:22:55

ST. LOUIS, May 12, 2014 /PRNewswire/ -- Patriot Coal Corporation (OTC Pink: PATCA) announced that its Highland Mine complex, located near Henderson, Kentucky, will be idling all coal production effective today due to a structural failure that damaged a portion of the Camp Preparation Plant on May 6. The company anticipates that full production at the Highland mine will be restored by June 30, but limited production may be started earlier when the preparation plant is repaired...

Mississippi River Sediments Plentiful Enough To Rebuild Shrinking Delta
2014-04-21 12:58:29

Brett Smith for redOrbit.com - Your Universe Online While flood-control measures have kept the Mississippi River from disrupting commerce and transportation along the waterways of southern Louisiana, they have also reduced the amount of wetland-preserving sediment flowing into the river’s delta. However, a new study published in the journal Nature Geoscience reports encouraging news: the amount of sediment contained in the river is more than enough to rebuild the Mississippi’s...

Small Asteroid Regolith Formed By Thermal Fatigue
2014-04-04 06:21:44

John P. Millis, Ph.D. for redOrbit.com - Your Universe Online Small asteroids contain a layer of loose, unconsolidated rock and dust known as a regolith composed of centimeter-sized fragments and smaller particles. New research from researchers at the Observatoire de la Côte d'Azur, Hopkins Extreme Materials Institute at Johns Hopkins University, Institut Supérieur de l'Aéronautique et de l'Espace and Southwest Research Institute (SwRI), have now determined that this layer is formed by...

Study Shows Most Of The Sand In Alberta's Oilsands Came From Eastern North America
2014-03-13 15:24:24

University of Calgary University of Calgary-led research is first of its kind, uncovering the origin of oilsands sediment They're called the Alberta oilsands but most of the sand actually came from the Appalachian region on the eastern side of the North American continent, a new University of Calgary-led study shows. The oilsands also include sand from the Canadian Shield in northern and east-central Canada and from the Canadian Rockies in western Canada, the study says. This...

Geophysicist And Mathematicians Team Up To Describe How River Rocks Round
2014-02-13 13:58:08

University of Pennsylvania For centuries, geologists have recognized that the rocks that line riverbeds tend to be smaller and rounder further downstream. But these experts have not agreed on the reason these patterns exist. Abrasion causes rocks to grind down and become rounder as they are transported down the river. Does this grinding reduce the size of rocks significantly, or is it that smaller rocks are simply more easily transported downstream? A new study by the University of...


Latest Sedimentology Reference Libraries

River Delta
2013-04-18 22:36:25

A river delta is a landform that is created at the mouth of a river, where the river flows into an ocean, estuary, lake, sea, or reservoir. These deltas are built from the deposition of the sediment that is carried by the river as the flow exit’s the mouth of the river. Over a long period of time, this deposition constructs the distinctive geographic pattern of a river delta. The creation of a delta is made up of three core forms: the bottomset, topset, and foreset/frontset. Bottomset...

28_b760796d3dace508242e89fc53d49081
2005-05-26 11:13:08

In geology, a conglomerate is a rock consisting of other stones that have been cemented together. Conglomerates are sedimentary rocks consisting of subangular clasts and are thus differentiated from breccias, which consist of angular clasts. Both conglomerates and breccias are characterized by clasts larger than sand (>2 mm). There are two varieties of conglomerate, defined by texture: paraconglomerates and orthoconglomerates. Paraconglomerates are one of two varieties of conglomerate...

More Articles (2 articles) »
Word of the Day
caparison
  • A cloth or covering, more or less ornamented, laid over the saddle or furniture of a horse, especially of a sumpter-horse or horse of state.
  • Clothing, especially sumptuous clothing; equipment; outfit.
  • To cover with a caparison, as a horse.
  • To dress sumptuously; adorn with rich dress.
This word ultimately comes from the Medieval Latin 'cappa,' cloak.
Related