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科罗拉多大峡谷位于美国亚利桑那州西北部,是地球上最为壮丽的景色之一。科罗拉多河在科罗拉多高原上共切割出19条主要峡谷,其中最深、最宽、最长的一个就是科罗拉多大峡谷。它全长446公里,是世界上最长的峡谷之一。峡谷顶宽6至28公里,最深处1800米。谷底水面不足1000米宽,夏季冰雪融水下注,水深增至18米。山石多为红色。从谷底至顶部沿壁露出从前寒武纪到新生代各期的系列岩系,水平层次清晰,岩层色调各异,并含有各地质时期代表性的生物化石,故有“活的地质史教科书”之称。
Located in the northwestern part of Arizona, the Grand Canyon of the Grand is one of the most spectacular scenery on Earth. Colorado River cut a total of 19 major canyons in the Colorado Plateau, the deepest, the longest of which is the Colorado Grand Canyon. It is 446 kilometers long and is one of the longest gorges in the world. Canyon top width 6 to 28 kilometers, the deepest 1800 meters. The bottom of the water is less than 1000 meters wide, summer ice and snow melt water injection, the water depth increased to 18 meters. Mostly red rocks. From the bottom of the valley to the top along the wall exposed from the Precambrian to the Cenozoic series of rock series, the level of a clear, different layers of rock color, and contains the geological period representative biological fossils, so “living geological history textbook” Said.