美国亚利桑那州大峡谷闻名遐迩,是世界七大奇观之一。位于美国西南部,亚利桑那州西北与犹他州、内华达州交界处凯巴布高原的三角地带。由于科罗拉多河穿流其中,故又名科罗拉多大峡谷。这一大片隆起的高原,最深处达1500米,地形险峻绮丽,地质多由花岗石构成,色彩夺目,予人身置其间,有如走进地质博物馆之感。
A famous American John Muir said in 1898: “The Grand Canyon… as unearthly in the color and grandeur and quantity of its architecture as if you had found it after death on some other star.”
一位著名的美国人约翰缪尔曾在1898年说过:“(科罗拉多河的)大峡谷……它的色彩和构造的宏伟多样是世上所无的,就像是人消亡以后在别的星球上发现的东西。”
美国大峡谷的“死亡电单车”
科罗拉多大峡谷(the Grand Canyon)总面积接近3公里,任何人都不可能一眼看遍大峡谷的全貌。只有从高空俯瞰,才有可能完整地欣赏这条大地的裂缝。真正身临其境的人,只能从峡谷南缘或者北缘欣赏大峡谷的一部分。这倒是应了“不是庐山真面目,只缘身在此山中”的道理。
Perhaps the most spectacular feature of the Grand Canyon, its Redwall limestone cliff, stands about half way up the chasm and is practically vertical. Its average height is 550 feet --- almost exactly that of the Washington Monument. Though it is actually gray-blue limestone, the surface of the cliff has been stained to a sunset hue by iron salts washing out of the rocks. Above the Redwall come alternating layers of red sandstone and shale 1,000 feet thick, then comes the next pale-blue layer. The topmost layers are a yellowish limestone.
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