Wednesday, February 7, 2007
Types of landforms; Kopje
Augrabies Falls National Park, South Africa
General Description: Found on large domes with bedrock of similar origin, appear as small hills or heaps of weathere rock boulders, rooted in bedrock, rising abruptly from the surrounding gentle ground surface (a.k.a "koppies")
Shape: Irregular, largely angular, reflecting either massive structures or a well-developed vertical or near-vertical joints. Yet, sometimes rounded joint blocks as well.
Height: 1m to 8m in diameter (but usually til 3m only), 30m to 50m in height
Summit: Irregular
Slope: Largely rectilinear, as a result og angular and irregularly shaped blocks
Jointing: Extensive. Vertical, horizontal, cuboidal joints, which serve as avenues of weaknesses where the weathering agents differentially attack the rock structure.
Vegetation: Absence
Surroundings: Summits, valley sides, valley floors and pediplains
Kopje, Spitskop Nature Reserve, Upington, South Africa
CASTLE KOPJES
Height: (main difference) Taller, 50m to 100m
you, 9:18 PM
Augrabies Falls National Park, South Africa
General Description: Found on large domes with bedrock of similar origin, appear as small hills or heaps of weathere rock boulders, rooted in bedrock, rising abruptly from the surrounding gentle ground surface (a.k.a "koppies")
Shape: Irregular, largely angular, reflecting either massive structures or a well-developed vertical or near-vertical joints. Yet, sometimes rounded joint blocks as well.
Height: 1m to 8m in diameter (but usually til 3m only), 30m to 50m in height
Summit: Irregular
Slope: Largely rectilinear, as a result og angular and irregularly shaped blocks
Jointing: Extensive. Vertical, horizontal, cuboidal joints, which serve as avenues of weaknesses where the weathering agents differentially attack the rock structure.
Vegetation: Absence
Surroundings: Summits, valley sides, valley floors and pediplains
Kopje, Spitskop Nature Reserve, Upington, South Africa
CASTLE KOPJES
Height: (main difference) Taller, 50m to 100m
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