THE 400-KM SEISMIC DISCONTINUITY AND THE PROPORTION OF OLIVINE IN THE EARTHS UPPER MANTLE
The 400-km seismic discontinuity has traditionally been ascribed to the isochemical transformation of α-olivine to the β-modified-spinel structure in a mantle of peridotitic bulk composition1-6. It has recently been proposed7,8 that the observed seismic velocity increase at 400km depth is too abrupt...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1986
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