Question

a geologist sees this folded rock when studying in the field. he is drawn to the sample that is labeled a. he determines this formation was caused by compression. what type of landform did he find at label a? anticline syncline plateau fault - block mountain

Explanation:

• Anticline: An anticline is a fold that is convex up and forms when rock layers are compressed. The oldest rocks are at the core of an anticline.
• Syncline: A syncline is a fold that is concave up. The youngest rocks are at the core of a syncline. It also forms due to compression but has a different shape compared to what would be expected for the label A in a typical folded - rock diagram (anticlines are often more "arch - like" in appearance in such visual representations).
• Plateau: A plateau is a flat - topped area of highland. It is not formed by the folding of rocks due to compression in the same way as the folds (anticline/syncline).
• Fault - block mountain: Fault - block mountains are formed by tensional forces that cause blocks of the Earth's crust to move up or down along faults. They are not related to the folding (compression - induced folding) shown in the image.

Based on the fact that it is a fold caused by compression and the typical visual representation of an anticline (convex - up fold) in such geological diagrams, we can make the determination.

Answer:

anticline