Pulau San Cristóbal

San Cristobal

Gunung api perisai · Ecuador · 707 m

The NW coast of San Cristóbal Island contains numerous young pyroclastic cones, spatter vents, and lava flows. The island consists of a densely vegetated SW part and a lower, younger NE part with many extremely youthful lava flows. The tip of Kicker Rock, two steep-cliffed islands separated by a narrow cleft, is barely visible on the center horizon. Kicker Rock is an eroded remnant of a tuff cone that forms one of the scenic highlights of the Galápagos, 5 km off the west coast of San Cristóbal. · Foto: Photo by Ed Vicenzi, 2002 (Smithsonian Institution). · Wikimedia Commons

Tipe: Gunung api perisai
Negara: Ecuador
Wilayah: Eastern Pacific Volcanic Regions / Galapagos Hotspot Volcano Group
Ketinggian: 707 m
Koordinat: -0.829, -89.429
Letusan terakhir: Tidak diketahui
Kondisi tektonik: Rift zone / Oceanic crust (< 15 km)
Bentuk lahan: Shield
Batuan utama: Basalt / Picro-Basalt

Ringkasan geologi

San Cristóbal Island consists of a densely vegetated western part and a lower, younger eastern part with many unvegetated lava flows. The morphology on the SW side of the resembles low-angle Hawaiian shields more than the steep-sided shields of Fernandina and Isabela Island. Most lava flows on the NE part of the island originated from SW-NE-trending fissures. Some of the flows have reached the sea, where littoral cones formed. The dates of the latest eruptions are unknown, but possibly less than 1,000 years old. Kicker Rock, two small islands about 5 km off the NW coast, is an eroded remnant of a tuff cone.

Ringkasan Wikipedia

Pulau San Cristóbal adalah sebuah pulau paling timur di kepulauan Galapagos, serta salah satu yang tertua secara geologis. Secara administratif bagian dari San Cristóbal Canton, Ekuador.

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