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It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore. WOVOdat is a database of volcanic unrest instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines.

Satellite image courtesy of Planet Labs Inc., 2019 ().

The field contains monogenetic scoria cones, lava flows, lava domes, and maars. NASA Landsat 7 image () The Vakinankaratra volcanic field covers an area of 3,800 km 2 in central Madagascar, some of which is shown in this September 2019 Planet Labs satellite image mosaic (N is at the top). N is at the top in this NASA Landsat image. The volcanic field is one of the largest on the island and covers a 100-km-long area in central Madagascar. The Ankaratra volcanic field in central Madagascar consists of lava domes, fissure vents, scoria cones, and maars. The latest activity occurred in the southern part of the massif and produced well-preseved strombolian cinder cones.Ĭopyrighted photo by Katia and Maurice Krafft, 1973. Trachytic lava domes were erupted during the initial stage and massive fissure eruptions created a series of tectonic lakes. Vulcanian eruptions produced several lake-filled craters such as this one. The Ankaratra volcanic field, the most prominent and volcanologically diverse on Madagascar, covers a 100-km-long area in the central part of the island.

Le massif volcanique de l'Itasy (Madagascar). The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.īattistini R, 1962. Vulcanian eruptions formed several lake-filled craters. The latest activity produced well-preserved basanitic cinder cones. Trachytic lava domes were erupted during the initial stage, and massive fissure eruptions created a series of tectonic lakes. The larger field covers a 100-km-long area in central Madagascar generally between Avironimamo to the N and Antsirabe to the S. The Quaternary Vakinankaratra volcanic field is at the SW end of the Neogene Ankaratra volcanic field.