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Cartes topographiques Avalon
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Santa Catalina Island
United States > California > Los Angeles County > Avalon
Santa Catalina Island (Spanish: Isla Santa Catalina; Tongva: Pimu) often shortened to Catalina Island or Catalina, is a rocky island, part of the Channel Islands, off the coast of Southern California in the Gulf of Santa Catalina. The island covers an area of about 75 square miles (194 square kilometers). It…
Altitude moyenne : 60 m
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…
Altitude moyenne : 60 m