Here's why:
* Mesa: A mesa is a flat-topped hill with steep sides. They are formed when a layer of resistant rock, like sandstone or limestone, is overlaid by softer rock. As erosion wears away the softer rock, the resistant layer remains, creating the flat top.
* Resistant Bedrock: Bedrock that resists erosion is typically harder, more durable, and less susceptible to weathering. This can be due to its composition (like granite or quartz) or its structure (like tightly compacted layers).
Other features can also be formed from resistant bedrock, but mesas are the most distinctive:
* Butte: Similar to a mesa but smaller and more pointed.
* Cuesta: A gently sloping ridge with a steep slope on one side and a gradual slope on the other.
* Cliff: A steep, vertical rock face formed by erosion of resistant rock.
Let me know if you have any other questions!