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Beachrocks on La Palma Island developed on platform-forming lavas of the Cumbre Vieja volcano. Some of these lavas are related to the 1585 (Puerto Naos), 1677 and 1971 (Echentive) eruptions. Radiocarbon dating of the Charco Verde beachrock gives a conventional age of 33 330+/-490 BP, while that at Playa Chica beach gives a calibrated age of 14 940+/-525 BP. The beachrocks, up to 1.5 m thick and...
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