Sunday, February 24, 2013

Mega-landslides and Toreva blocks on the Colorado Plateau

Conor Watkins and J. David Rogers of Missouri S&T University have an incredibly rich website on the topic of Megalandslides of The Colorado Plateau. The site includes presentations they have given over the past decade mapping the extensive landslides across the region, with clear diagrams describing Toreva blocks, and the complex histories of some these huge features.  The map above shows landslides mapped by them and others, shown in red.  The Echo Cliffs section where the Bitter Springs landslide occurred on US89 is at the right of the map, with individual disconnected slides along the NNW-SSE trending line.   The ancient slide that contains last week's slide is the largest in this string.

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