The February issue of National Geographic Magazine includes an article on Vermillion Cliffs National Monument in the Arizona-Utah border region.
In addition to the beautiful photos by Richard Barnes, there's a block diagram of the region. Take a look at the bottom left corner in tiny print: “BLOCK DIAGRAM: CHUCK CARTER, SOURCES: BRIAN GOOTEE, ARIZONA GEOLOGICAL SURVEY; BUREAU OF LAND MANAGEMENT; USGS”
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