intraplate en · ADJ
Etymology
Etymology tree Proto-Indo-European *h₁én Proto-Indo-European *-teros Proto-Indo-European *h₁énterosder. Latin *interus Latin intrābor. English intra- Vulgar Latin *platta Old French platebor. Middle English plate English plate English intraplate From intra- + plate.
Meanings
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(not-comparable) Taking place within a single tectonic plate.
And what causes these massive intraplate rupturings? Something deep within the Earth.
2003, Bill Bryson, A Short History of Nearly Everything, BCA, page 189: