Horizontally Layered Rocks – Characteristics, Processes, and Utilisation (Grade 11 NSC Matric Geography): Flashcards
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Differential erosion
Differential erosion
Different rock types erode at different rates
3 processes forming flat-topped hills
3 processes forming flat-topped hills
Sedimentary layers, igneous sills, lava flows
Which erodes faster: shale or sandstone?
Which erodes faster: shale or sandstone?
Shale erodes faster than sandstone
Sill (geology)
Sill (geology)
Igneous intrusion between sedimentary rock layers
Canyon definition
Canyon definition
Deep, narrow valley in an arid area
Landform evolution sequence in Karoo
Landform evolution sequence in Karoo
Plateau → mesa → butte → conical hill
Mesa characteristic
Mesa characteristic
Top width exceeds height
Butte characteristic
Butte characteristic
Top width less than height
Scarp retreat
Scarp retreat
Cliff erosion moving backwards, parallel to original position
Viable farming in these landscapes
Viable farming in these landscapes
Sheep and goat farming