flowtop

noun

flowtop

noun

US /ˈfloʊtɑp/

Etymology From flow + top.

1

Geography, Geology, Natural sciences The solid crust on a moving lava flow.

they formed as gas vented from fixed sources at depth, ripping continuous openings through the moving flowtop.2007 September 21, Jaeger et al., "Athabasca Valles, Mars: A Lava-Draped Channel System" in Science 317(5845), page 1710 http://www.sciencemag.org/cgi/content/full/317/5845/1709

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.