A structural feature with parallel exposures of the same sedimentary formations dipping toward each other is called?

• A. Anticline
• B. Monocline
• C. Dike
• D. Syncline

Answer: (D)

Recognize how folds form troughs when the same beds appear on both sides and tilt toward a central line. In a syncline, identical sedimentary layers dip toward each other, creating a trough-shaped structure with the fold axis running along the middle. This is different from an anticline, where the beds dip away from the center forming an arch; a monocline, which is a single bend causing a step-like tilt in one direction; and a dike, which is an igneous intrusion cutting across existing rocks rather than forming a fold. So, the feature described—parallel exposures of the same beds dipping toward each other—fits a syncline.