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Latest Sedimentology Stories

2012-05-24 23:01:14

National River Cleanup provides an excellent way for people to improve river health and give back to their communities. Washington, DC (PRWEB) May 23, 2012 American Rivers, the nation´s leading voice for healthy rivers and clean water, today announced the kickoff of National River Cleanup. For over two decades this program has mobilized hundreds of thousands of volunteers to pick up trash from rivers nationwide. Healthy rivers provide major benefits like clean drinking water, wildlife...

2012-05-20 06:20:13

SALT LAKE CITY, May 20, 2012 /PRNewswire/ -- FX Energy, Inc. (NASDAQ: FXEN) today announced it has added two new exploratory wells to those already scheduled for drilling in 2012. The new wells, Tuchola-3 and Frankowo, will test prospects in two of the Company's 100%-owned concessions in Poland. These wells will enable the Company to increase the momentum of its most active drilling year to date. The new wells will fit within the previously reported $60 to $70 million capital budget. The...

Image 1 - Crust Below Mississippi Delta Still Subsiding, Just Much Slower
2012-04-04 04:21:55

New data suggests that the Mississippi Delta is still sinking, but at a much slower rate than previously estimated. A new paper published in the journal Earth and Planetary Science Letters reports these new findings. Geoscientists arrived at this new conclusion after comparing detailed sea-level reconstructions from different areas of coastal Louisiana. The new findings not only reveal new information about the subsidence of the Mississippi Delta, but also admonishes the continuous...

2012-04-02 02:22:07

NEW YORK, April 2, 2012 /PRNewswire/ -- New Geofacets SEPM content module delivers powerful, niche content into the hands of users to give them more confidence in their exploration decisions Elsevier [http://www.elsevier.com/wps/find/homepage.cws_home ], a world-leading provider of scientific, technical, and medical information products and services, today announced that it is to integrate approximately 18,000 geological maps from SEPM (Society for...

Geologist Find Unusual Land Formation On Mars
2012-03-23 06:10:46

Geologists at the University of Washington found that a previously unseen landform on Mars could help provide a window into the geological history of the Red Planet. The "periodic bedrock ridges", or PBRs, look like sand dunes, but the scientists say that they are actually made from wind erosion of bedrock. "These bedforms look for all the world like sand dunes but they are carved into hard rock by wind," David Montgomery, a UW professor of Earth and space sciences, said in a press...

Explaining Dune Field Patterns
2012-02-08 05:04:26

In a study of the harsh but beautiful White Sands National Monument in New Mexico, University of Pennsylvania researchers have uncovered a unifying mechanism to explain dune patterns. The new work represents a contribution to basic science, but the findings may also hold implications for identifying when dune landscapes like those in Nebraska´s Sand Hills may reach a “tipping point” under climate change, going from valuable grazing land to barren desert. The study was...

2012-01-19 14:58:50

When the water in the Mississippi River rose to 58 feet with a forecast of 60 feet or higher in May 2011, the emergency plan to naturally or intentionally breach the levees, established over 80 years prior, was put in motion. The flood of 1937 did top the frontline levee and water passed into and through the New Madrid Floodway, but being floodfree since then caused area landowners to oppose the plan being put into action. "After a delay due to a legal appeal from area landowners, the U.S....

2011-12-14 19:53:26

Discovery may be boon to engineers, manufacturers A stroll on the beach can mean sinking your toes into smooth sand or walking firm-footed on a surface that appears almost solid. While both properties are commonplace, exactly what it is that makes granular materials change from a flowing state to a “jammed,” or solid, state? Whether it´s sand on a beach or rice grains in a hopper, being able to predict the behavior of granular matter can help engineers and manufacturers of...

Luminous Grains Of Sand Help Determine Year Of Historic Storm Flood
2011-10-12 03:10:41

Scientists at TU Delft have successfully matched a layer of sediment from the dunes near Heemskerk to a severe storm flood that occurred in either 1775 or 1776. This type of information helps us gain more insight into past storm floods and predict future surges more accurately. The scientists´ findings have been published in the online edition of the scientific magazine Geology, and will be on the cover of the paper edition of November. Historic knowledge Our historic knowledge...

namibia_wet4_h
2011-09-14 18:42:46

Something's up with the weather in Namibia, say geoscientists Kyle Nichols of Skidmore College in Saratoga Springs, N.Y., and Paul Bierman of the University of Vermont in Burlington, Vt. Nichols and Bierman should know. They're just back from the western mountains and coastal plain of this sparsely populated African country. Usually, western Namibia is a dusty place where the stream beds are sand and the "lakes" are nothing more than flats of dried mud. Not now. This year, rivers...


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...

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