Definition of tholeiitic in English:

tholeiitic

adjective

Geology
  • See tholeiite

    • ‘In the Canaries, the lavas are much more compositionally varied in each of these stages, ranging from tholeiitic basalts to phonolites and trachytes.’
    • ‘Metabasic rocks throughout the Moine outcrop display a tholeiitic chemistry comparable with modern mid-ocean basalts.’
    • ‘Carboniferous volcanism, occurring at converging plates margins, both at the Appalachian and at the Ouachita margins, was decidedly not tholeiitic.’
    • ‘A tholeiitic suite of dolerite dykes in the southwestern Borrowdale Volcanic Group is a separate, later magmatic event.’
    • ‘The Whin Sill complex is a large tholeiitic quartz dolerite intrusion in northern England.’

Pronunciation

tholeiitic

/ˌθəʊlɪˈɪtɪk/