Landforms and Rock Structure

Landforms and Rock Structure - OVERVIEW Theearth'...

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Landforms and Rock Structure  OVERVIEW   This chapter considers how rock properties influence the landforms and drainage  patterns produced by fluvial denudation. The earth's crust contains a variety of rock types which differ in their  resistance  to denudation. More resistant rock tends to form uplands and ridges while weaker  rock forms lowlands and valleys.  Rock layers can be tilted, folded and fractured by tectonic forces to produce a  variety of rock structures. The tilt and orientation of rock layers and fractures are  described by their  strike  and  dip In areas with horizontal strata and an arid climate, fluvial denudation produces  vertical cliffs of resistant rock separated by gentler slopes of less resistant rock.  These slopes surround flat-topped plateaus, mesas and buttes capped by  resistant rock. 
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