<Li> Mount Erebus in Antarctica, the southernmost active volcano in the world, having been observed erupting since 1972 . Eruptive activity at Erebus consists of frequent Strombolian activity . </Li> <Li> Stromboli itself . The namesake of the mild explosive activity that it possesses has been active throughout historical time; essentially continuous Strombolian eruptions, occasionally accompanied by lava flows, have been recorded at Stromboli for more than a millennium . </Li> <P> Vulcanian eruptions are a type of volcanic eruption, named after the volcano Vulcano . It was named so following Giuseppe Mercalli's observations of its 1888--1890 eruptions . In Vulcanian eruptions, intermediate viscous magma within the volcano make it difficult for vesiculate gases to escape . Similar to Strombolian eruptions, this leads to the buildup of high gas pressure, eventually popping the cap holding the magma down and resulting in an explosive eruption . However, unlike Strombolian eruptions, ejected lava fragments are not aerodynamic; this is due to the higher viscosity of Vulcanian magma and the greater incorporation of crystalline material broken off from the former cap . They are also more explosive than their Strombolian counterparts, with eruptive columns often reaching between 5 and 10 km (3 and 6 mi) high . Lastly, Vulcanian deposits are andesitic to dacitic rather than basaltic . </P> <P> Initial Vulcanian activity is characterized by a series of short - lived explosions, lasting a few minutes to a few hours and typified by the ejection of volcanic bombs and blocks . These eruptions wear down the lava dome holding the magma down, and it disintegrates, leading to much more quiet and continuous eruptions . Thus an early sign of future Vulcanian activity is lava dome growth, and its collapse generates an outpouring of pyroclastic material down the volcano's slope . </P>

Which type of volcano has explosive eruptions due to thick magma
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