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sand sea |
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sand sea [′san ′sē] (geology) An extensive assemblage of sand dunes of several types in an area where a great supply of sand is present; characterized by an absence of travel lines, or directional indicators, and by a wavelike appearance of dunes separated by troughs. The flat, rain-smoothed plain of volcanic ash and other pyroclastics on the floor of a caldera. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| But those in the south-east of the basin, such as the Sarir field in the Calenscio Sand Sea, are sandstones of Cretaceous or Cambrian age, overlain by thick marine Cretaceous shales. He and Lancaster calculate that if all the grains in these sand seas originated at the northern ice cap, they would have added 275 meters of material over the polar area now layered with deposits. But those in the south-east of the basin, such as the Sarir field in the Calenscio Sand Sea, are sandstones of Cretaceous or Cambrian age, overlain by thick marine Cretaceous shales. |
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