Question 1:

Which geological structure is formed by the bending or folding of rock layers?

Explanation: The geological structure formed by the bending or folding of rock layers is called a "Fold." Folds are common features in areas of compressional tectonic forces and are characterized by curved or wavy patterns in the rock layers. Examples of folds include anticlines and synclines.

Question 2:

Which geological structure is a fracture or crack in rocks along which there has been no movement?

Explanation: The geological structure that represents a fracture or crack in rocks along which there has been no movement is called a "Joint." Joints are formed due to stresses in the Earth's crust but do not involve displacement or shearing of the rock layers. They are important in controlling the movement of fluids through rocks.

Question 3:

Which geological structure is a planar fracture in rocks along which there has been movement?

Explanation: The geological structure that represents a planar fracture in rocks along which there has been movement is called a "Fault." Faults are formed due to the tectonic forces that cause rocks to break and move relative to each other. They can result in significant changes in the landscape and are associated with earthquakes.

Question 4:

Which geological structure is a tabular body of igneous rock that cuts across the surrounding rock layers?

Explanation: The geological structure that is a tabular body of igneous rock that cuts across the surrounding rock layers is called a "Dike." Dikes are formed when magma is injected into fractures or cracks in pre-existing rocks and solidifies. They often have a more resistant composition compared to the surrounding rocks and can form prominent features.

Question 5:

Which geological structure is a fracture in rocks along which there has been horizontal displacement?

Explanation: The geological structure that represents a fracture in rocks along which there has been horizontal displacement is called a "Fault." Faults can exhibit different types of displacement, including horizontal displacement (strike-slip faults), vertical displacement (normal faults), or a combination of both (oblique faults).