Poco Leok

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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 8.68°S
  • 120.48°E

  • 1675 m
    5494 ft

  • 264070
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Poco Leok.

 Available Weekly Reports

There are no Weekly Reports available for Poco Leok.

There are no Holocene eruptions known for Poco Leok. If this volcano has had large eruptions prior to 10,000 years ago, information might be found in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Casadevall T J, 1989. . (pers. comm.).

Kasbani, Browne P R L, Johnstone R D, Kahsai K, Utami P, Wangge A, 1997. Subsurface hydrothermal alteration in the Ulumbu geothermal field, Flores, Indonesia. Proc 22nd Workshop Geotherm Res Eng, Stanford Univ, 1997, 7 p.

Kemmerling G L L, 1929. Vulkanen van Flores. Vulk Seism Meded Dienst Mijnw Ned-Indie, 10: 1-138.

Neumann van Padang M, 1951. Indonesia. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 1: 1-271.

Sulasdi D, 1996. Exploration of Ulumbu geothermal field, Flores-East Nusa Tenggara Indonesia. Proc 21st Workshop Geotherm Res Eng, Stanford Univ, Jan 22-24, 1996, SGP-TR-151: 51-54.

van Bemmelen R W, 1949b. The Geology of Indonesia. The Hague: Government Printing Office, v 1, 732 p.

Poco Leok volcano in western Flores Island was constructed with an irregular 7-km-wide caldera of uncertain origin. No pyroclastic-flow deposits are associated with the "caldera," which is poorly known geologically (Casadevall, 1989, pers. comm.). Poco Leok volcano was constructed within the caldera, culminating in the eruption of an andesite lava within the crater area. Volcanism is of Quaternary age (van Bemmelen, 1949b), and four fumarole fields are located at elevations of 825-1200 m within the depression. The Ulumbu geothermal field is located on the flank of Poco Leok at 650 m elevation and includes hot springs, fumaroles, mud pots, and steaming ground.