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.
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