ASBOG Practice Exam

In the context of geological maps, the appearance of a V indicates which of the following?

1. Presence of waterways

2. Geological fault lines

3. Bedrock inclinations

4. Types of soil

The correct answer is: Bedrock inclinations

In geological maps, the appearance of a V shape typically indicates bedrock inclinations, particularly in the context of stream valleys or ridges. When a stream flows through a valley that cuts into sedimentary rock layers, the V shape often portrays the cross-section of those inclined layers. The point of the V usually points upstream, illustrating the direction of water flow and how the erosion of the stream has exposed the underlying geological formations. This characteristic is crucial for understanding the geological structure of the area since it provides insight into the orientation and tilt of the rock layers, which is vital information for interpreting geological history and potential resource locations. Recognizing these features allows geologists to deduce information about tectonic forces, sediment deposition, and the overall geological evolution of the region.