In the following image of the Grand Canyon, identify the angular unconformity. 
Definitions:
Perception
The process by which individuals organize and interpret their sensory impressions to give meaning to their environment.
Sensory Systems
The physiological parts of an organism that allow it to perceive the world through senses like sight, sound, smell, taste, and touch.
Symphony
An elaborate musical composition for full orchestra, typically in four movements, at least one of which traditionally uses sonata form.
Sensation
The initial process of detecting and responding to environmental stimuli through the sense organs.
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