anorthitic

comparative more anorthitic · superlative most anorthitic

1. geographyComposed of or resembling anorthite.

   1 more example

   Next followed a period of activity in which basic rocks were produced by submarine eruptions—lavas and scoriae of anorthitic character, palagonitic tuffs, and basaltic ashes; and finally from the crater, which must have been a vast lake of fire like those in the Sandwich Islands, poured forth quiet streams of basaltic lavas.

   1884, "St Paul" in the Encyclopaedia Britannica, 9th ed., Vol. XXI, p. 189