subcrustal

[ suhb-kruhs-tl ]

adjective

, Geology.

1. situated or occurring below the crust of the earth.

Word History and Origins

Origin of subcrustal¹

First recorded in 1895–1900; sub- + crustal

Example Sentences

The idea that mountain folds, and the lesser rugosities of the Earth's surface, arose in a wrinkling of the crust under the influence of cooling and skrinkage of the subcrustal materials, is held by many eminent geologists, but not without dissent from others.

From Project Gutenberg

It is perhaps from such a subcrustal layer that the lava of volcanoes is supplied.

From Project Gutenberg