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michael kors klocka ..
Geological history explains much of what seemed so unusual about the Blue Mountains to the early foresters: the steep canyons, the trees where no one expected trees, the fragility of the soils. About 65 million years ago, repeated layers of lava flows and volcanic ash spread over the Blues; some 40 million years later, during the Miocene epoch, fluid basalts flowed up through holes in the lava. Layers of hard basalt on top of lava and soft volcanic ash created a landscape entirely different from the rolling hill and valley terrain of the East. Because less dense flows eroded much more rapidly than denser layers on top, rivers carved these lava layer cakes into knife edge canyons running nearly straight up and down. These layers have made for a land that is slippery, prone to landslides, and often spectacular: a place of "great rivers coursing through deep, perpendicular, basaltic walled canyons below the undulating surface of a vast treeless plain," in the geographer Donald Meinig's words.
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