What a sinking island can tell us about sea-level change and earthquakes

One of the most striking features of Santa Catalina Island, southwest of Los Angeles, is an absence. Unlike much of the California coast and its closest islands, Catalina lacks cliffs stepping up and back from the sea – remnants of shorelines carved when the Pacific sloshed higher than it does today and fault movements had yet to push this part of the continent beyond the water's reach.

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