Geology Reference
In-Depth Information
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Figure 16.9
Origin of a Wave-Cut Platform
Wave-cut
platform
Original land
surface
Sea cliff
Notch eroded
by waves
Wave-built
platform
a
Wave erosion causes a sea cliff to migrate landward, leaving a
gently sloping surface, called a wave-cut platform. A wave-built platform
originates by deposition at the seaward margin of the wave-cut platform.
b
This gently sloping surface along the coast of California is a
marine terrace. Notice the sea stacks rising above the terrace.
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Figure 16.10
Erosion of a Headland
Sea cave
Sea arch
Sea stack
Erosion of a headland and the origin of a sea cave, a sea arch, and sea stacks.
a
This sea stack in Australia has an arch that developed in it.
Sea stacks at Shell Beach along the California coast.
c
b
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