Patterned ground—sorted stone circles, stripes, and polygons in cold regions—is primarily produced by which process?
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Get StartedPatterned ground—sorted stone circles, stripes, and polygons in cold regions—is primarily produced by which process?
Options:
- Freeze–thaw sorting and cryoturbation
- Glacial plucking
- Aeolian deflation
- Chemical weathering
Correct answer: Freeze–thaw sorting and cryoturbation
Explanation: Patterned ground forms through repeated freeze–thaw cycles and cryoturbation that sort sediments by size; water expands roughly 9% on freezing, a key physical mechanism driving stone movement.
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