New evidence says Earths greatest extinction caused by ancient meteorite
...t out of the Earth like a giant volcano, but oozed molten rock for thousands of years--so much lava, in fact, that if spread evenly, it would bury the surface of the Earth under 10 feet of magma. Further testing by Basu and Robert Poreda, professor of earth and environmental sciences at the University, and ...Princeton paleontologist produces evidence for new theory on dinosaur extinction
...e fallout is visible as a layer of glassy beads of molten rock that rained down after the impact.) These fossils indicate that this impact came about 300,000 years before the mass extinction. The latest evidence came last year from an expedition by an international team of scientists who drilled 1,511 meter...Mathematical models reveal 'molten' and 'glassy' states of RNA
...dels, in order to observe the molten or glassy state. Liu has found that more than 8,000 units are necessary -- a computational task well beyond the reach of current studies, which are based on as few as 2,000 units....Bugs from the deep may be window into the origins of life -- on earth and beyond
...cks." Pillow lavas form as seawater rapidly cooled molten lava into volcanic glass. Because these glasses don't have internal crystal structures, the way minerals do, bacteria leave distinctively-shaped tracks as they bore minute holes into the glass. "I sometimes joke that if NASA could get me a pillow la...Global aluminium waste headache solved
...gh a lance, the tip of which is submerged into the molten material in the furnace. The fuel combusts at the tip, heating and melting the incoming feed materials, and the injected gases cause vigorous agitation and rapid reactions. Globally there are now 30 smelting plants using the core SIROSMELT technology...New research questions evidence for earliest life on earth
...d komatiite, a relative of basalt, which formed as molten rock solidified. Such rocks form at temperatures far too high for living organisms, hence there is little chance that the preserved graphite represents past life. The white layers are thought to be veins of quartz that were subsequently introduced ...April GEOLOGY and GSA TODAY media highlights
... for this absence is that the surface of Earth was molten and subject to intense meteorite bombardment. However, the chemistry of these rare zircons tells another story. The chemical and isotopic composition of these ancient zircons suggests that liquid water was stable on the surface of Earth and that cont...MIT instrument monitors molten materials
...cations in other industries involved in processing molten materials. Paul Woskov, principal research engine...instrument measures a key parameter for processing molten materials: viscosity. "Viscosity is a measure of how well a liquid flows within stationary boundarie...Researchers develop liquid form of DNA
... run electricity through it." Physically, the new molten salt form of DNA is less like water and more like ...ively charged DNA crystals with positively charged molten metal complexes containing ethylene oxide tails. Murray, his colleagues and students have employed t...Oldest crystal reveals early Earth
... planet became little more than a swirling ball of molten metal and rock. Scientists believed it took a long time, perhaps 700 million years, for the Earth to cool to the point that oceans could condense from a thick, Venus-like atmosphere. Complicating the picture is that for 500 million to 600 million yea...Earlier water on Earth? Oldest rock suggests hospitable young planet
... planet became little more than a swirling ball of molten metal and rock. Scientists believed it took a long time, perhaps 700 million years, for the Earth to cool to the point that oceans could condense from a thick, Venus-like atmosphere. For 500 million to 600 million years after the Earth was formed, t...Fuel cell research center to develop and test new technologies
...ducting electrodes for fuel cells; (2) modeling of molten carbonate and solid oxide fuel cells; (3) extending fuel cell technology for use with electrochemical membrane devices that clean fuel, gases and other substances; (4) enabling technologies for compact, small-scale or micro proton exchange membrane f...Protein essential for making steroids turns out to be a "molten globule"
...s to do its best work when it takes the shape of a molten globule.That is not news from astronomers or cosmo...be the first protein found that does its work in a molten globule state.More studies are necessary to determine StAR's exact structure and to work outthe deta...Ancient Volcanic Cataclysms Discovered In The Indian Ocean
...ells up from deep beneath Earth's surfaceand forms molten rock. The major objectives of the ODP expedition, explainsBruce Malfait, director of ODP at NSF, were to determine through drilling whenvolcanism was active; how much of the plateau formed above sea level and howlong portions of the feature remained...Some Smelter Slags Represent A Significant Environmental Hazard
...ttime, the refinery operators drained slag off the molten metal and poured itinto bathtub-shaped molds. When it cooled and hardened, they dumped the wastematerial along the banks of the nearby Mokelumne River. The Penn Mine iscurrently the site of an environmental restoration project. The projectsponsors, h...Long Lava Flows May Have Taken Years, Causing Global Cooling And Extinctions
... awareness of the role of lava tubes,through which molten lava can be transported over great distances with littleloss of temperature. These tubes may play a role in future volcanic eruptions bycarrying large amounts of lava to distant populated areas, as they have in thepast....Early Career Development Grants Foster Faculty Research And Education
...he dynamics of the solidification phenomena in the molten weld pool as well as the microstructural evolution in the adjacent heat-affected zone. With her research, she plans to enhance the undergraduate curriculum by incorporating the computer models into the classroom, and also develop activities to invol...Methane Deep In Ocean Crust Could Feed Chemical-Hungry Microorganisms
...this layer consists of rock that was once part of molten magma chambers. Although the basalts found nearly everywhere on the seafloor come from the same submarine chambers, Kelley says that the fluids in layer-three rock are very different from those in basalts because of the environment in which they coo...