The main portion of a volcano built by eruption of lava, tephra, pyroclastic flows, lahars, and related volcanic deposits. Some shield volcanoes have lava flows that extend beyond the edifice
U.S. Geological Survey, U.S. Department of the Interior, Volcano Hazards Program, Glossary, Washington, DC, USA 2011. http://volcanoes.usgs.gov/vsc/glossary/alluvium.ht ml, (ND/ Volc Emr - Amer) {795}