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Latest Sedimentology Stories

Evidence Shows Dust And Sand Deposits In China Are Controlled By Rivers
2013-10-15 06:56:34

Royal Holloway, University of London New research published today in the journal Quaternary Science Reviews has found the first evidence that large rivers control desert sands and dust in Northern China. Northern China holds some of the world's most significant wind-blown dust deposits, known as loess. The origin of this loess-forming dust and its relationship to sand has previously been the subject of considerable debate. The team of researchers led by Royal Holloway University,...

2013-07-30 23:28:43

A geologist-led tour among the diverse rock types that can be found in the canyons, mesas, and badlands of Northern New Mexico. A journey through the three eras of visible life on Earth, and some of the most beautiful scenery in the Southwest. Santa Fe, New Mexico (PRWEB) July 30, 2013 Seven Directions Custom Tours announces an engaging journey through the vast geological history of Northern New Mexico, where the Southern Rocky Mountains, the Colorado Plateau, and the Basin and Range come...

2013-06-12 23:16:19

Explore the regulations, technologies, and management practices around hydraulic fracturing of shale for oil production. Woodland Hills, CA (PRWEB) June 12, 2013 B2BWebinars.net and BlueTech® Research are pleased to announce the details of the next interactive web-conference in the BlueTech Webinar Series titled: Produced Water from Shale Oil — Technical and Market Overview. The Event will be held on June 27th, 11:00 AM - 12:30 PM EST; 4:00 PM - 5:30 PM BST. Hydraulic fracturing...

Pebbles, Sand In Martian River Network Show Signs Of Ancient Water
2013-06-05 09:19:44

April Flowers for redOrbit.com - Your Universe Online The most convincing evidence yet that the frigid deserts of Mars were once a habitable environment crossed by flowing water are presented by pebbles and sand scattered near an ancient Martian river network. The findings of this study, led by scientists at NASA´s Mars Science Laboratory mission, were published in the journal Science. The research team says that the discovery of sand grains and small stones that bear the telltale...

Mars Stones And Pebbles Hint At Watery Past
2013-05-30 13:06:50

Lee Rannals for redOrbit.com - Your Universe Online Another piece of evidence has emerged that gives more weight to the argument that the Red Planet could have had a wet history. NASA's Curiosity rover currently roving around on Mars has snapped images of gravel and pebbles. Researchers writing in the journal Science say that the shapes and sizes of these rounded pebbles clearly show that there has been flowing water on Mars. Curiosity's stereo camera took photos of a few areas with...

2013-04-16 15:32:01

New research tracking the movement of dredged sediment around Liverpool Bay could save millions of pounds, according to scientists at the National Oceanography Centre in Liverpool. Each year, sediment has to be dredged from the port and deposited elsewhere to maintain access for commercial vessels. But according to the new study, the dredged material appears back in the port again within just a few weeks of its removal, carried by sea currents. "There are two competing sediments coming...

2013-03-11 23:01:03

The Sedimentary Geology Laboratory (LAGESED) of UFRJ, coordinated by Prof. Dr. Leonardo Borghi, acquired the updated versions of Petroledge and RockViewer systems for petrographic knowledge management of carbonate and siliciclastic rocks. Rio de Janeiro, RJ (PRWEB) March 11, 2013 The Sedimentary Geology Laboratory (LAGESED) of UFRJ, coordinated by Prof. Dr. Leonardo Borghi, acquired the updated versions of Petroledge and RockViewer systems for petrographic knowledge management of carbonate...

Understanding Travel Patterns Of Microbes Blowing In The Wind
2013-02-07 09:32:18

U.S. Department of Agriculture (USDA) With help from a wind tunnel and the latest DNA technology, U.S. Department of Agriculture (USDA) scientists are shedding light on the travel patterns of microbes in soils carried off by strong winds. The work has implications for soil health and could lead to management practices that minimize the damage to soils caused by wind erosion. Wind erosion is an emerging issue in soil conservation efforts. Agricultural Research Service (ARS) scientists...

New Test Helps With Understanding Earth’s History And Resources
2012-12-06 10:18:32

University of Florida A new study co-authored by a University of Florida researcher provides the first direct chronological test of sequence stratigraphy, a powerful tool for exploring Earth´s natural resources. The model allows geologists to better understand how sedimentary rocks are related to one another in time and space and predict what types of rocks are located in different areas. The information may help scientists more reliably interpret various aspects of Earth´s...

2012-11-08 00:53:19

Rapid advances in the new and developing field of restoration sedimentology will be needed to protect the world's river deltas from an array of threats, Indiana University Bloomington geologist Douglas A. Edmonds writes in the journal Nature Geoscience. The commentary, published this week in the November issue, addresses the fact that land is disappearing from river deltas at alarming rates. And deltas are extraordinarily important: They are ecologically rich and productive, and they are...


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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Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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