to spherical and result from high vapor pressure during an eruption. Reticulite is a type of basaltic pumice formed in very high lava fountains. It has...

drawn-out strands, known as Pele's hair. Sometimes basalt aerates into reticulite, the lowest density rock type on earth. Although Hawaiian eruptions are...

of folding movements that accompany the formation of mountain ranges. reticulite A basaltic pumice in which the walls of the vesicles have collapsed, leaving...

(Mauna Loa, Hawaii) in 1877. Similar floating scoria blocks containing reticulite were observed in 1993–1994 at Socorro, Mexico. As of 2012[update], lava...