Landforms Associated With Different Rocks (Grade 10 NSC Matric Geography): Flashcards
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Definition of landforms
Definition of landforms
Distinctive features on Earth's surface shaped by natural processes
Differential erosion concept
Differential erosion concept
Soft rocks erode faster than hard rocks, leaving hard rocks standing
Volcanic calderas
Volcanic calderas
Large collapsed volcanic craters, often contain lakes
Tors appearance and origin
Tors appearance and origin
Rounded rock columns ~20m tall, weathered igneous intrusions
Volcanic necks
Volcanic necks
Tall columns, hard core remains after volcano erodes away
Mesas
Mesas
Smaller flat-topped hills with steep sides, from horizontal strata
Buttes
Buttes
Even smaller than mesas, tower-like flat-topped features
Cuestas characteristics
Cuestas characteristics
Tilted ridges with one steep slope and one gentle slope
Quartzite properties
Quartzite properties
Metamorphic rock from sandstone, much harder, erosion resistant
Waterfall formation with metamorphic rocks
Waterfall formation with metamorphic rocks
Hard rock layer creates step, soft rock below erodes, water falls