Plume-Generated Triple Junctions: Key Indicators in Applying Plate Tectonics to Old Rocks

  title={Plume-Generated Triple Junctions: Key Indicators in Applying Plate Tectonics to Old Rocks},
  author={Kevin C. Burke and John Frederick Dewey},
  journal={The Journal of Geology},
  pages={406 - 433}
Continental lithosphere-especially where stationary with respect to mantle plumes-is marked by plume-generated uplifts typically crested by volcanoes that rupture in three rifts at angles of about 120° to each other, perhaps because this configuration requires the least work. It is proposed that since the plate tectonic regime began, about $$2 \times 10^{9}$$ years B.P., divergent plate motion has commonly begun at axial dikes emplaced in rifts formed in this way. A normal course of events is… Expand
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The Karroo Volcanic Cycle
  • K. G. Cox
  • Geology
  • Journal of the Geological Society
  • 1972
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