Origin of igneous
Related formsnon·ig·ne·ous, adjective
Examples from the Web for igneous
Sills, or intrusive sheets, are bed-like masses which have been thrust between the planes of sedimentary or even of igneous rocks.
We shall now consider the igneous agents that act on the earth's surface.
The igneous rocks present a considerable range of composition.
It is estimated that the feldspars make up 50 per cent of all the igneous rocks and 16 per cent of the sedimentary rocks.The Economic Aspect of Geology|C. K. Leith
Basalt, bas-awlt′, n. a hard, dark-coloured rock of igneous origin.