Latest Sedimentology Stories

2008-12-09 09:39:21

Dr. Rusty Feagin was managing several ecosystem research projects on Galveston Island when the 2008 hurricane season began.Then he got an unexpected visit from a research assistant named Ike."Ike reconfirmed the basic idea I've had for several years," said Feagin, ecosystem scientist with Texas AgriLife Research. "The plants on sand dunes and in marshes build an island's elevation, so we shouldn't compromise that."Most of the dunes and marshes he and his graduate students had studied were...

2008-11-18 10:39:41

Marginal plants, particularly trees, play a crucial role in sustaining the biodiversity of Europe's big river systems, according to a recently held workshop organized by the European Science Foundation (ESF). This finding provides important clues for protecting Europe's rivers against a combined onslaught from human development and climate change, which are tampering with existing ecosystems and changing both the physical and biological forces acting upon them. Both aquatic plants (living in...

2008-10-14 03:00:19

By Kristin S. Agostoni Sand and sediment clogging the south entrance to the Marina del Rey channel will be dredged this fall using technology designed to separate contaminants from beach-suitable sand. The U.S. Army Corps of Engineers plans to pump the dredged material from the channel entry to a Dockweiler Beach parking lot, where a machine will extract polluted fine particles from coarse sand, a spokesman said. The goal is to haul away the contaminants - estimated to be about 10...

2008-10-09 18:00:00

By Tony Henderson RECENT flooding has been part of the price for the way the landscape has been changed in the past, a North river scientist has said. "We are paying the price for not thinking about how our management of the land impacts negatively on the water environment," said Professor Stuart Lane, executive director of the Institute of Hazard and Risk at Durham University. Prof Lane said past measures, such as digging drainage grips in upland moors, had caused major problems....

2008-10-06 09:59:33

As the world looks for more energy, the oil industry will need more refined tools for discoveries in places where searches have never before taken place, geologists say. One such tool is a new sediment curve (which shows where sediment-on-the-move is deposited), derived from sediments of the Paleozoic Era 542 to 251 million years ago, scientists report in this week's issue of the journal Science. The sediment curve covers the entire Paleozoic Era. "The new Paleozoic sea-level sediment curve...

2008-10-01 09:00:31

TORONTO, CANADA--(Marketwire - Oct. 1, 2008) - Shoreham Resources Ltd. (TSX VENTURE:SMH) ("SMH" or "Shoreham"), a Canadian based exploration company dedicated to the exploration of advanced precious metal and polymetallic deposits in South America and Canada, is pleased to announce further developments regarding its Potaro-Maple Creek gold and diamond project in Guyana. Pursuant to an agreement with Vannessa Ventures Ltd. (now Infinito Gold Corp. (TSX VENTURE:IG)) finalized in March 2007, the...

2008-10-01 03:00:19

By Hsu, Huai-Houh Preparation of Large-Sized Silty Sand Specimens Using a Water Spray Method In-situ tests are often used to determine the engineering properties of sand. The cone penetration test (CPT) is a widely used method. Interpretations of the CPT are mostly developed based on chamber calibration tests. Early CPT calibration tests used clean, uniformly graded silica or quartz sand in most cases. Many empirical rules and analytical models have been established based on tests using...

2008-09-29 18:00:31

ST. LOUIS, Sept. 29 /PRNewswire-FirstCall/ -- Patriot Coal Corporation today announced that it intends to idle its Jupiter mining complex by the end of 2008. The Jupiter complex produced 1.5 million tons of thermal coal in 2007. The complex currently consists of one underground mine, and previously included the Thunderhill surface mine, which was closed as a result of an October 2007 court injunction that blocked the use of a lawfully issued mining permit. The constrained underground...

2008-09-26 15:00:24

By Lisa Vernon-Sparks; David E Chopy COVENTRY -- Developer Nicholas E. Cambio has signed an agreement with the state to prevent the erosion of soil from his Centre of New England business park into neighboring lakes and wetlands. Under the agreement signed Sept. 11, Cambio must pay the Department of Environment $103,000 in fines and place $225,000 in escrow to perform drainage and other work to protect the abutting properties. The agreement lists a timetable for compliance in various...

2008-09-12 10:30:00

The precise timing of the origin of life on Earth and the changes in life during the past 4.5 billion years has been a subject of great controversy for the past century. The principal indicator of the amount of organic carbon produced by biological activity traditionally used is the ratio of the less abundant isotope of carbon, 13C, to the more abundant isotope, 12C. As plants preferentially incorporate 12C, during periods of high production of organic material the 13C/12C ratio of carbonate...

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...

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
  • 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.