The horizontal line that defines the portion of the anticline or syncline with the maximum curvature is known as the
A)trough.
B)valley.
C)basin.
D)hinge.

Question

The horizontal line that defines the portion of the anticline or syncline with the maximum curvature is known as the
A)trough. 
B)valley. 
C)basin. 
D)hinge.

Quizplus · Accepted Answer

The horizontal line that defines the portion of the anticline or syncline with the maximum curvature is known as the hinge. It is the point at which the curvature of thefoldis greatest and separates the limbs of a fold. The other options, trough, valley, and basin, are not related to the maximum curvature of the fold.

The Horizontal Line That Defines the Portion of the Anticline