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Lava Flows. The major eruptive product of Hawaiian volcanoes is lava. Lava flows can form during fountaining eruptions or they can well out of the ground with little or no pyroclastic activity. There are two major types of basaltic lava flow, ' a'a and pahoehoe.ava flows can form during fountaining eruptions or they can well out of the ground with little or no pyroclastic activity.
The Hawaiian shield volcanoes (Kilauea and Mauna Loa) are the most notable examples of shield volcanoes. Lava Dome: Unlike shield volcanoes, the lava in dome volcanoes is very thick and viscous often because it is rich in silica and/or andesite. As a result it does not travel far.During eruptions, thick lava piles up on top of the crater, cools down and hardens.hield volcanoes have very fluid lava composed almost entirely of basalt. The lava which arrives at the surface is hot and little changed since the time it was generated. Shield volcanoes are the largest volcanoes on Earth.