Mapas topográficos Avalon

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Santa Catalina Island

United States > California > Los Angeles County > Avalon

Catalina is primarily composed of two distinct rock units: Catalina Schist from the Early Cretaceous (95 to 109 million years ago), and Miocene volcanic and intrusive igneous rocks. The island is rich in quartz, to the extent that some beaches on the seaward side have silvery-grey sand. These formations…

Altitud media: 60 m