Phase transition Clapeyron slopes and transition zone seismic discontinuity topography

C. R. Bina, G. Helffrich

Research output: Contribution to journalArticlepeer-review

463 Scopus citations


The depths, widths, and magnitudes of the 410-km and 660-km seismic discontinuities are largely consitent with an isochemical phase change origin. Recent seismic studies suggest greater topography on the 660. The relevant Clapeyron slopes are reexamined in light of experimental studies as well as the requirements of internal thermodynamic consistency. The bulk of the evidence indicates a greater Clapeyron slope magnitude for the 410 than for the 660. Thus the recent seismic results are unexpected. -from Authors

Original languageEnglish (US)
Pages (from-to)15,853-15,860
JournalJournal of Geophysical Research
Issue numberB8
StatePublished - 1994

ASJC Scopus subject areas

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology


Dive into the research topics of 'Phase transition Clapeyron slopes and transition zone seismic discontinuity topography'. Together they form a unique fingerprint.

Cite this