Tag Archives: ash

Discovery of Giant Wasp Opens Window to Ancient Forests

… eventually causes the tree to die. The discovery has given researchers insight into the modern world and how it began coming together after the dinosaurs became extinct. Many of the trees and plants today’s horntail wood-wasps enjoy were also favored by the old wasp and have been found as fossils in the same forest as the ancient horntails; including trees (hemlock, fir, spruce, pine, spruce, sequoia, hemlock, and cedar) and flowering plants (beech, maple, elm, ash, hickory, ash, elm and …

How an Excess of Carbon After a Mass Extinction Shaped Ocean Life : Nature & Environment : Science World Report

… through Permian aged coal deposits and, of course, the burning of coal created CO2,” said Merlynd Nestell, one of the researchers, in a news release. The researchers found that there was also volcanic activity in what is now Australia and southern China that could have burned Permian vegetation. What’s truly interesting, though, is that the carbon from ash accumulated in the atmosphere and marine environment and was used by some marine microorganisms to construct their shells. This …

Australia found to have the world’s oldest asteroid impact zone – SlashGear

… spooky, desert Bermuda Triangle down under. By using method dating the surrounding rocks, Dr. Glikson believes these impact scars are from two asteroids that hit the earth between 300 million and 600 million years ago. The asteroid impact believed to have killed the dinosaurs hit 66 million years ago. The resulting dust cloud blocked out the sun and sent ash particles back down to earth, leaving an ashy sediment layer that can be found around the world. The Australian asteroid in question has no …

‘Inappropriate’ back-burns could drive species extinct – Features – ABC Environment (Australian Broadcasting Corporation)

… nothing; only the vaporous silence of an empty landscape. The 60 remaining breeding pairs of Mallee emu-wren (Stipiturus mallee) in South Australia had been lost and the species was now extinct in the state. “There is nothing left of an emu-wren after a fire, not even a pile of ash,” says Professor Michael Clarke, head of Life Sciences at La Trobe University. “People are moved by a koala with burnt paws but what they may not understand is that if we get it wrong a whole species …

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