送交者: 一默 于 December 13, 2007 12:09:08:
回答: 【其它】以“大峡谷赞歌”,为朋友们祝寿:) 由 梦冬 于 December 12, 2007 23:53:32:
“一百万年来,Colorado River默默地流淌,不知不觉地创造着奇迹。。。”
这点还真不知道,我想当然地认为是地震造成断裂。刚想Question你一下,觉得还是虚心的
查一查,还果然如此,是六百万年!
The canyon, created by the Colorado River over a period of 6 million years, is
277 miles (446 km) long, ranges in width from 4 to 18 miles (6.4 to 29 km) and
attains a depth of more than a mile (1.6 km). Nearly two billion years of the
Earth's history have been exposed as the Colorado River and its tributaries cut
their channels through layer after layer of rock while the Colorado Plateau was
uplifted. (from Wiki)
倒也不是纯粹的想当然,我曾经沿着大峡谷开到峡谷没有。峡谷最后变得立陡且非常狭窄。
之后还能看到地面的起伏不平,自然想到了地震。大概平原上升是个缓慢的过程,上升一点
冲刷一点。能有如此奇观,大概是上升速度和冲刷速度配合的不错,谁懂行给讲讲?
照得确实不错(有些雾气,不然效果会更好),挺喜欢大峡谷的作者那张,长知识了:)。
你去的时候季节不错,绿意正浓。我是秋天去的,树木和峡谷的颜色一致:)。
音乐选得不错,气势磅礴。谢谢分享。