ASBOG Practice Exam

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Study for the ASBOG Exam. Prepare with flashcards and multiple choice questions. Each question includes hints and explanations to help you succeed. Get ready for your exam!

Practice this question and more.

When the V-shaped outcrop is wide, open, and points upstream, what does it suggest about the bed's inclination?

The bed is horizontal
The bed is steep and upstream
The bed is shallow
The bed is concave

The correct answer is: The bed is steep and upstream

When a V-shaped outcrop is wide, open, and points upstream, it indicates that the underlying rock layers are inclined in such a way that they slope steeply towards the source of the water or sediment flow, which is upstream. This formation can result from the preferential erosion of softer rock layers, leaving behind the harder layers that form the steep sides of the V. Such a configuration suggests that the angle of the rock beds is significant and directed towards the river or stream, making them appear steep in relation to the valley floor. The upward point of the V shape towards the heads of streams reinforces the idea that the layers are inclined upstream, as this configuration enhances the eroding effects of water flow on the outcrop.