Episodicity of Mesozoic terrane accretion along the Pacific margin of Gondwana: implications for superplume-plate interactions

摘要: A review of evidence for deformation and terrane accretion on the Late Triassic–Early Jurassic margins Pangea mid-Cretaceous palaeo-Pacific ocean shows that was global synchronous with probable superplume events. appears to be concentrated in period 202–197 Ma coeval eruption Central Atlantic Magmatic Province, onset Pangaea break-up, a extended normal magnetic polarity major mass extinction event, all possible expressions event. Mid-Cretaceous occurred two brief periods, the first from approximately 116 110 west second roughly 105 99 east palaeo-Pacific, both events possibly represented northeast Siberia. This oceanic plateaus, core-complex formation rifting New Zealand Gondwana, Cretaceous epoch, radiation flowering plants several animal groups, linked simple unifying mechanism is presented suggesting large continental or plates, when impacted by superplume, tend break-up/reorganize, associated gravitational spreading away broad, thermally generated topographic high resulting short-lived pulse plate-marginal deformation and accretion.