the resistance of a liquid to shear forces
a slide of a large mass of dirt and rock down a mountain or cliff
an event when energy is directed horizontally instead of vertically as in a volcanic eruption
A flow of volcanic ash, dust, rocks and debris that cascades down the slope of a volcano during an eruption
an avalanche of volcanic water and mud down the slopes of a volcano
A large plume of ash that forms above a volcanoe during an erruption
dry form of lava resembling clinkers
A type of lava in which the surface was relatively fluid and so formed smooth or porridge-like surfaces.
any geologic body that cuts discordantly across
large emplacement of igneous rock that forms from cooled magma deep in the earth's crust
igneous rock that has been injected between two layers of sedimentary rock.
a portion of the Earth's surface that may be far from tectonic plate boundaries and that experiences volcanism due to a rising mantle plume
an igneous rock that has an abundace of light colored minerals.
silicate mineral or rock that is rich in magnesium and iron
igneous rock body that crystallized from magma slowly cooling below the surface of the Earth
tabular pluton that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff
solid material thrown into the air by a volcanic eruption that settles on the surrounding areas
Fine particles of mineral matter from a volcanic eruption which can be dispersed long distances by winds aloft
Volcanic rock that is formed when magma is ejected by a volcano.
mass of molten rock larger than 65 mm in diameter, formed when a volcano ejects viscous fragments of lava during an eruption
molten rock expelled by a volcano during an eruption.
molten rock in the earth's crust
Rift eruptions are volcanoes that occur where magma erups through long cracks in the lithosphere where tectonic plates are spreading apart.
subduction boundary eruption
Result of magma that forms at subduction boundaries.
word that means inactive