News articles tagged with 'sediment'
Even Canadian rocks are different
— 29 Mar 2011 15:37 | Geology and palaeontologyCanadians have always seen themselves as separate and distinct from their American neighbours to the south, and now they have geological proof…
Wind can keep mountains from growing
— 29 Mar 2011 15:13 | EnvironmentWind is a much more powerful force in the evolution of mountains than previously thought, according to a new report from a University of Arizona-led research team…
Fossils record ancient migrations and trilobite orgies
— 17 Mar 2011 18:59 | Geology and palaeontologyFew specimens inspire greater thrills among fossil collectors than a complete trilobite. These ancient arthropods - relatives of lobsters, spiders and insects - went extinct more than…
Ancient 'hyperthermals' a guide to anticipated climate changes
— 17 Mar 2011 18:39 | EnvironmentBursts of intense global warming that have lasted tens of thousands of years have taken place more frequently throughout history than previously believe, according to evidence gathered…
Dry lake reveals evidence of southwestern 'megadroughts'
— 1 Mar 2011 18:51 | EnvironmentThere's an old saying that if you don't like the weather in New Mexico, wait five minutes. Maybe it should be amended to 10,000 years, according to new research…
Reviving 100-year-old resting spores of diatoms
— 1 Mar 2011 17:39 | BiologyDiatoms account for a large proportion of the phytoplankton found in the water, and live both in the open sea and in freshwater lakes. By reviving 100-year-old spores that had laid…
New Zealand earthquake damage illustrates risks posed by shallow crustal faults
— 23 Feb 2011 19:44 | Geology and palaeontologyThe terribly destructive earthquake that just hit Christchurch, New Zealand, was only a moderate 6.3 magnitude, but had certain characteristics that offer an important lesson to cities…
T. rex more hyena than lion
— 23 Feb 2011 17:34 | Geology and palaeontologyThe ferocious Tyrannosaurus rex has been depicted as the top dog of the Cretaceous, ruthlessly stalking herds of duck-billed dinosaurs and claiming the role of apex predator, much as…
Fish provide missing piece in the marine sediment jigsaw
— 22 Feb 2011 23:21 | EnvironmentResearch published today reveals the previously unidentified role that fish play in the production of sediments in the world's oceans, and specifically of the carbonate sediments that…
Arctic climate variation under ancient greenhouse conditions
— 12 Feb 2011 19:52 | EnvironmentTiny organisms preserved in marine sediments hold clues about Arctic climate variation during an ancient episode of greenhouse warming…