Broad areas of folded rock layers that resemble a bowl turned right-side up are called?
a)domes
b)basins
c)horsts
d)monoclines
The correct answer is a) domes.
To arrive at this answer, we can begin by understanding the given description. The description states that the rock layers resemble a bowl turned right-side up. This suggests that the fold in the rock layers is arched upward rather than downward.
Next, let's break down the other options to eliminate them:
b) Basins: Basins refer to broad areas where rock layers are folded downward, making a bowl-like depression. Since the description mentions an upward arch, basins can be eliminated.
c) Horsts: Horsts are elevated blocks of the Earth's crust between two normal faults. Horsts are not directly related to folded rock layers, so this option can also be eliminated.
d) Monoclines: Monoclines are folds in rock layers that have a single steep slope. While this option involves folding like the description, it does not involve a broad area with an upward arch.
Therefore, based on the given description, the correct answer is a) domes. Domes represent a type of fold in rock layers where the layers arch upward, forming a broad area that resembles an overturned bowl.