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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.
Eruptions. Although the type of eruptions found in a shield volcano can vary slightly, most experience Hawaiian eruptions. These eruptions will usually have ground flows of lava that is capable of traveling great distances.Because the flows travel a longer distance, the individual sheets of lava are generally thinner. shield volcano is most likely to form during a lava flow of fluid basaltic material, usually those that flow down from either a flank fissure system or the summit itself. The most common type of shield volcano is those that form during one long-term eruption.