05. Dreikanter Back to Aeolian Landforms
- A pebble with three facets shaped by sandblasting.
- A Dreikanter is a type of ventifact.
- It typically forms in desert or preglacial environments, action of blowing sand.
- It has three-faced pyramidal shape.
- The word Dreikanter derived from Germen, it meaning is "three-edged".
- Formed by- prevailing wind, sand and debris cause a rock face to become flattened and polished. This changes the mass distribution of the rock, and may cause it to turn another surface toward the wind.
- Dreikanters generally form in dry, arid environments from hard rocks
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| some of the best examples of wind erosion are found in antartica .there are no other process to active .these boulders have been deeply eroded by the prevailign winds. |
example -
-Antarctica
hint- Specimens of Northeastern United States were formed during the Pleistocene era when the absence of vegetation made for little cover from wind-blown sediment.
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