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Pulau Paskah

Rapa Nui

Gunung api perisai · Chile · 501 m

Waves lap against the northern coast of Easter island.  This view looks from Obahe to Mahatua with Volcán Poike, a shield volcano forming the eastern tip of the island, on the horizon.  The trachytic lava domes of Tea-Tea are the small peaks on the left horizon.  The triangle-shaped Easter Island, renowned for its dramatic megalithic statues of hand-carved basalt, sits atop the Sala y Gómez submarine ridge, which trends eastward from the East Pacific Rise.  The island is composed of three principal volcanoes, Poike, Rano Kau, and Terevaka.
Waves lap against the northern coast of Easter island. This view looks from Obahe to Mahatua with Volcán Poike, a shield volcano forming the eastern tip of the island, on the horizon. The trachytic lava domes of Tea-Tea are the small peaks on the left horizon. The triangle-shaped Easter Island, renowned for its dramatic megalithic statues of hand-carved basalt, sits atop the Sala y Gómez submarine ridge, which trends eastward from the East Pacific Rise. The island is composed of three principal volcanoes, Poike, Rano Kau, and Terevaka. · Foto: Photo by Oscar González-Ferrán (University of Chile). · Wikimedia Commons
Tipe
Gunung api perisai
Negara
Chile
Wilayah
Pasifik Selatan / Salas y Gómez Ridge Volcano Group
Ketinggian
501 m
Koordinat
-27.114, -109.356
Letusan terakhir
Tidak diketahui
Kondisi tektonik
Rift zone / Oceanic crust (< 15 km)
Bentuk lahan
Shield
Batuan utama
Basalt / Picro-Basalt
Ringkasan geologi

The triangular Rapa Nui (also known as Isla de Pascua, or Easter Island), is renowned for its dramatic megalithic statues of hand-carved basalt. The island sits atop the largely submarine Salas y Gómez Ridge, which trends eastward from the East Pacific Rise. It is composed of three principal volcanoes and more than 70 subsidiary vents. Rano Kau at the SW tip includes flat-bottomed crater 1.5 km wide, while Poike volcano is at the E point; both are of Pleistocene age. Terevaka is a broad shield volcano of Pliocene-to-Pleistocene age at the northern point of the island, which is capped by many pyroclastic cones; the last stage of activity consisted of eruptions from multiple rift zones. The latest lava flows, at Hiva-Hiva near the west-central coast, are thought to be less than 2,000 years old.

Ringkasan Wikipedia

Ringkasan Inggris

Poike is one of the three main extinct volcanoes that form Rapa Nui, a Chilean island in the Pacific Ocean. At 370 metres above sea level, Poike's peak is the island's second-highest point after the peak of the extinct volcano Terevaka.

Wikipedia · CC BY-SA · Baca artikel lengkap

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