vineri, 3 aprilie 2009

Science News: Simulations And Ancient Magnetism Suggest Mantle Plumes May Bend Deep Beneath Earth's Crust

ScienceDaily (Apr. 1, 2009) — Computer simulations, paleomagnetism and plate motion histories described in the journal Science reveal how hotspots, centers of erupting magma that sit atop columns of hot mantle that were once thought to remain firmly fixed in place, in fact move beneath Earth's crust... "In 2003, we showed that the hotspot—the plume—that created the Hawaiian chain of islands must have moved. We suggested that mantle motion was involved, but the cause of the change in motion remained a mystery," says Tarduno. Full story:

* LiveScience (01 February 2009): Tropical Turtle Fossil Found in Arctic - The last place scientists expected to find the fossil of a freshwater, tropical turtle was in the Arctic... John Tarduno, professor of geophysics at the University of Rochester:"The warming may have been caused by volcanoes pumping tremendous amounts of carbon dioxide into the Earth's atmosphere."... Tarduno led an expedition into the Canadian Arctic in 2006 to study an ancient aspects of Earth's magnetic field...
* I.Velikovsky, Worlds in Collision (Planet X, Volcanoes activation, Poles reversal 3600 years ago): ”Volcanic explosions... The causes of the ulterior appearance and disappearence of the glacier layer... Two celestial bodies have been attracted one to each other. The inner masses of the Earth were pushed to the periphery. The Earth with its rotation movement disturbed, started towarm... The Earth exploded and the lava started to spread around... the magnetic poles have been several times reversed, the last time during the Jews’ Exodus." Details: