Sedimentary, igneous, and metamorphic are found all over the park. Specifically, at the coast there are
mainly sedimentary rocks such as sandstone, siltstone, mudstone, shale, and
chert, all with cracks that are filled in with quartz.All along the Smith River in Jedediah Smith Redwoods
State Park, there is green rock known as serpentine, which came from far
below the ocean floor. There is also lots of iron.
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