Wai Sano

Sano, Wai

Caldera · Indonesia · 1319 m

Wai Sano, the westernmost Holocene volcano on Flores Island, contains a 3.5 x 2.5 km caldera with a lake. The SE caldera wall truncated the slopes of Poco Sesak (also called Gunung Cerak), and the low point on the caldera rim is on the E side. Two solfataras are located at the SE shore of the lake. · Foto: Photo published in Kemmerling 1929, "Vulkanen van Flores" (courtesy of Volcanological Survey of Indonesia).

Tipo: Caldera
Paese: Indonesia
Regione: Sunda-Banda Volcanic Regions / Sunda Volcanic Arc
Altitudine: 1319 m
Coordinate: -8.735, 120.007
Ultima eruzione: Sconosciuto
Contesto tettonico: Subduction zone / Continental crust (> 25 km)
Forma vulcanica: Composite
Roccia principale: Dacite

Sintesi geologica

The Wai Sano composite volcano at the western end of Flores Island includes a 2.5 x 3.5 km elliptical caldera in the NW part of a larger 9-10 km edifice. The caldera contains Sanonggoang Lake, with a surface more than 200 m below the high point on the southern caldera rim. The Poco Sesok and Poco Dedeng peaks are near the center of the eroded massif. The area has been a target of geothermal investigations, and two solfataras are located at the SE shore of the lake. No eruptions have been reported or dated, but the area was mapped as Holocene (Ratman and Yasin, 1978).

Sintesi da Wikipedia

Riassunto in inglese

Wai Sano is a volcano located in the western part of the island of Flores, Indonesia. Wai Sano consists of an elliptical caldera about one mile (2.5 km) wide, containing a lake 260 meters below the 903 meter caldera rim, itself part of Mount Umpu Rua. Two fumaroles are located on the southeastern shore of the lake. No historical eruptions are known.

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