台地被风化侵蚀后的沙土层形成了陡峭的峡谷和悬崖。

Softer rock layers within the mesas eroded to form steep canyons and overhangs along their slopes.

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2008年这个小裂缝成为巨大的峡谷，破裂侵蚀金融系统的基础，吞没了数万亿美元，并使全球银行系统的生存处于严重危险之中。

The cracks became full-fledged canyons in 2008-when ruptures in the financial system's foundation swallowed up trillions of dollars and put the survival of the global banking system in serious peril.

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时间过去，河流侵蚀碎片，但我们仍然能看到在支流峡谷中出来的滑坡沉积物和三角洲沉积物中湖泊的证据。

Over time the river eroded out the debris, but we still see evidence of the lake in the landslide deposits as well as delta deposits coming out of the tributary valleys. The O.S.L..

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