Eruptions at shield volcanoes are only explosive if water somehow gets into the vent , otherwise they are characterized by low-explosivity fountaining that forms cinder cones and spatter cones at the vent, however, 90% of the volcano is lava rather than pyroclastic material.
Basalt plateau is the type volcanoe that is least explosive which is as a result of big and extensive volcanic eruptions.
Basalt plateau is an form of volcanoes that is extensive, thick, smooth flow having high-temperature, fluid basalt which erupt from either from fissures or flooding topographic lows, and accumulated to form a plateau. It is the least explosive type of volcano. It is former as a result of Giants and extensive volcanic eruptions over time that cover a specific land or place.
Therefore, Basalt plateau is the type volcanoe that is least explosive.
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