sphenolith

sphenolith

[′sfēn·əl‚ith]
(geology)
A wedgelike igneous intrusion that is partly concordant and partly discordant.
References in periodicals archive ?
"A cactolith is a quasihorizontal chonolith composed of anastomosing ductoliths whose distal ends curl like a harpolith, thin like a sphenolith, or bulge discordantly like an akmolith or ethmolith."