Aerial view of a channelized `a`a flow on Mauna Loa Volcano, Hawai`i.
are masses of molten rock that pour onto the Earth's surface during an effusive eruption
. Both moving lava and the resulting solidified deposit are referred to as lava flows. Because of the wide range in the viscosity of the different lava types (basalt
, and rhyolite
), lava discharge during eruptions, and characteristics of the erupting vent and topography over which lava travels, lava flows come in a great variety of shapes and sizes.
- ↑ http://volcanoes.usgs.gov/Products/Pglossary/LavaFlow.html