BackgroundThe Marquesas Islands show an age progression with the youngest volcanoes occurring at the SE end of the chain. Hiva Oa, a large shield volcano with a caldera truncated on the south side, is the NW-most volcano of the chain with some Pleistocene activity. Potassium-Argon dates range from 2.48-1.58 million years ago (Duncan and Mcdougall 1974). Radiometric ages for Tahuata Island, immediately south of Hiva Oa, are Pliocene.
Source: Smithsonian / GVP volcano information
Hiva Oa Photos
And the white-sand beach of the same name (Achivadolimni). (Photo: Tom Pfeiffer)
The Achivadolimni beach on Milos island. (Photo: Tobias Schorr)
The sweetwater lake Achivadolimni and the beach. (Photo: Tobias Schorr)
The protected Achivadolimni lake (Photo: Tom Pfeiffer)
See also: Sentinel hub | Landsat 8 | NASA FIRMS