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发表于 2010-10-14 16:17:33
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hoodoo
A hoodoo (also called a tent rock, fairy chimney, and earth pyramid) is a tall, thin spire of rock that protrudes from the bottom of an arid drainage basin or badland. Hoodoos consist of soft sedimentary rock topped by harder, less easily-eroded stone that protects each column from the elements.
They are mainly located in the desert in dry, hot areas. In common usage, the difference between hoodoos and pinnacles or spires is that hoodoos have a variable thickness often described as having a "totem pole-shaped body." A spire, on the other hand, has a smoother profile or uniform thickness that tapers from the ground upward. (Geology purists do note that only a tall formation should be called a hoodoo; any other shape is called a 'hoodoo rock'.)[
在卡城东北150公里以外的恐龙谷。照了好多,还没机会贴上来
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