The origin of hummocks, western Arctic coast, Canada

@inproceedings{Mackay1980TheOO,
  title={The origin of hummocks, western Arctic coast, Canada},
  author={James R. Mackay},
  year={1980}
}
  • James R. Mackay
  • Published 1980
  • Geology
  • Hummocks (nonsorted circles) are widely distributed in arctic and subarctic regions. The hummocks under discussion are composed of fine-grained frost-susceptible soils; the late summer frost table is bowl-shaped; and the hummocks grade from those which are completely vegetated (earth hummocks) to those with bare centres (mud hummocks). The mound form is usually attributed to an upward displacement of material resulting from cryostatic (freeze-back) pressure generated in a confined, wet… CONTINUE READING

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