A mass of liquid of partially solidified rock that is ejected from a volcano
A mass of liquid of partially solidified rock that is ejected from a volcano
Bomb
A mass of liquid of partially solidified rock that is ejected from a volcano
Bomb
A flow involving movement of broken rock, with little sand or mud, and particle-particle contact; usually developed in gravel or sand
Grain Flow
Relatively slow movement of land, typically at rates of cm/yr
Subsidence
A mass of cold, solid rock ejected from a volcano
Block
Fine materials (dust, ash, and cinders) produced by volcanic action
Tephra
An elevation that a stream cannot erode past, controlled by level of the body of water which the stream discharges into
Base Level
The time between seismic waves
Period
Extremely rapid downslope movement of large volumes of rock and debris
Sturzstrom
Secondary/Shear waves that shake back and forth perpendicular to the direction of wave travel, cannot travel through a liquid (4.5km/s upper mantle, 3.5km/s crust)
S Wave
Used to measure earthquakes
Seismograph