Final answer:
The outer zone of weathered rock is known as soil, which forms through the weathering process and can later contribute to the formation of sedimentary rocks.
Step-by-step explanation:
The outer zone of a rock that has been weathered is commonly referred to as soil. This soil layer is composed of particles of disintegrated rock of various sizes, ranging from coarse gravel to fine sand and clay.
The process of weathering breaks down rock material and, together with the addition of organic matter, leads to the formation of soil that supports plant life. Over time, sedimentary rocks form from these weathered materials through the processes of erosion, deposition, and cementing.