that erupt from an elongate fissure will
build broad embankments of spatter, called
spatter ramparts, along both sides of the fissure. The spatter commonly
sticks together, or agglutinates, when it lands and is buried by later spatter.
In contrast to these low linear fortifications, spatter cones are
more circular and cone shaped – the only real distinction between
the two structures is their shape.
|In less than 24 hours, these low lava fountains built
a spatter rampart along the sides of the eruptive fissure on Mauna
Loa Volcano, Hawai'i. Note person for scale in lower left. Credit:
J. D. Griggs / U.S. Geological Survey
AND PLANETARY SCIENCE
Source: U.S. Geological Survey