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Latest Sedimentology Stories

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...

shutterstock_111776000
2012-09-18 17:40:22

Lee Rannals for redOrbit.com — Your Universe Online We have even hardly begun to scratch the surface of Mars, yet scientists are already trying to find ways to be eco-friendly on the Red Planet. Scientists are looking to regolith, or alien dirt, to determine whether it can be used to help build shielding for ground stations. Chiara La Tessa is manager of experiments in biophysics at GSI. She said the need for this research is to help shave off some of the weight associated with...

2012-09-17 02:21:12

NEW YORK, September 17, 2012 /PRNewswire/ -- Collaboration makes over 225,000 maps available on-demand to help geoscientists quickly and accurately assess the opportunities and risks involved in oil & gas exploration Elsevier [http://www.elsevier.com ], a world-leading provider of scientific, technical, and medical information products and services, and SEPM [http://www.sepm.org ] (Society for Sedimentary Geology) today...

2012-08-06 06:21:30

RADNOR, Pa., Aug. 6, 2012 /PRNewswire/ -- Preferred Sands, a leading producer of frac sand and coated proppants in North America, proudly introduces RCS Garnet, the only non-phenolic coated proppant in the oil and gas industry that can consistently create particle-to-particle bonding in conditions as low as 90 degrees F without the use of an activator. RCS Garnet is optimal for low-temperature well environments such as those found in Alberta, Canada and in the Permian Basin in Texas. RCS...

2012-05-31 11:09:08

The June GSA TODAY science article is now online and open access at http://www.geosociety.org/gsatoday/. In this issue, Gregory Retallack and Joshua Roering of the University of Oregon enter the long-standing debate as to whether rock platforms along coasts and rivers are the product of physical erosion or chemical weathering above the water table. Although the notion of wave-cut or stream-cut platforms is firmly entrenched in the literature, Retallack and Roering present the case that a...


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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