The Earth's coastlines are among the oldest geomorphological structures on the planet.

Question

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The Earth's coastlines are constantly changing and evolving through geological processes such as erosion, sedimentation, and tectonic activity. While some features of coastlines may be ancient, they are not among the oldest structures on the planet. Other geological features, such as mountain ranges and ancient rock formations, are much older.

The Earth's Coastlines Are Among the Oldest Geomorphological Structures on the Planet