GLOBAL PLATE MOTIONS RELATIVE TO THE HOT SPOTS 64 TO 56 Ma.

Donna M Jurdy*, Richard G. Gordon

*Corresponding author for this work

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

It has been found that early Tertiary plate velocities with respect to the hot spots are consistent with absolute velocities deduced by assuming that no net torque is exerted on the lithosphere as a whole. That these dissimilar assumptions yield such similar velocities suggests that absolute plate motions is a useful concept. The characteristics of early Tertiary plate velocities differ from present plate velocities in only minor ways. The plates with major continents (Africa, North America, South America, Eurasia, and Antarctica) moved faster during the early Tertiary than at present, but none (except the Indian plate) exceeded a velocity of 46 km/Ma. During the early Tertiary the Indian plate moved faster, 123 km/Ma, than does any present-day plate. Although the lithosphere near the equator moved faster than lithosphere near the poles during the early Tertiary, the difference was less than at present.

Original languageEnglish (US)
Pages (from-to)9927-9936
Number of pages10
JournalJournal of Geophysical Research
Volume89
Issue numberB12
DOIs
StatePublished - Jan 1 1984

ASJC Scopus subject areas

  • Geophysics
  • Oceanography
  • Forestry
  • Aquatic Science
  • Ecology
  • Condensed Matter Physics
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Materials Chemistry
  • Palaeontology

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