flowtop

English

Etymology

flow +‎ top

Pronunciation

• (US) IPA^(key): /ˈfloʊtɑp/

Noun

flowtop (plural flowtops)

1. (geology) The solid crust on a moving lava flow.
   • 2007 September 21, Jaeger et al., "Athabasca Valles, Mars: A Lava-Draped Channel System" in Science 317(5845), page 1710 [1]:

     they formed as gas vented from fixed sources at depth, ripping continuous openings through the moving flowtop.