EXPERIMENTAL DETERMINATION OF COMPRESSIONAL WAVE VELOCITIES OF OLIVINE AGGREGATE UP TO 1000°C AT 1GPA
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dc.contributor.author | Aizawa Y. | |
dc.contributor.author | Ito K. | |
dc.contributor.author | Tatsumi Y. | |
dc.date.accessioned | 2021-03-17T00:48:36Z | |
dc.date.available | 2021-03-17T00:48:36Z | |
dc.date.issued | 2001 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=834912 | |
dc.identifier.citation | Tectonophysics, 2001, 339, 3-4, 473-478 | |
dc.identifier.issn | 0040-1951 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/26815 | |
dc.description.abstract | The velocity of the compressional wave (VP) was measured for olivine aggregate at temperatures up to 1000°C at 1GPa using a piston-cylinder high-pressure apparatus. The samples used in the present study were hot-pressed olivine aggregate with uniform chemical composition. The value of VP at 1GPa and an ambient temperature, is 8.42kms-1, which is identical to that in previous measurements of olivine single-crystals. The temperature derivative of VP (#VP/#T=-4.7x10-4kms-1K-1) obtained from the present experiments at 1GPa is smaller than the previously reported value at an ambient pressure. The temperature gradient for constant velocity (dT/dZ)c allowing the effect of anelasticity is calculated to be 4°Ckm-1. Taking into account, the temperature gradient in the upper mantle (15°Ckm-1 within the lithosphere and 0.6°Ckm-1 within the asthenosphere), it is suggested that the low velocity zone in the upper mantle could be caused by a drastic change in the temperature gradient at the lithosphere/asthenosphere boundary. | |
dc.subject | COMPRESSIONAL WAVE VELOCITY | |
dc.subject | HIGH PRESSURE | |
dc.subject | HIGH TEMPERATURE | |
dc.subject | OLIVINE AGGREGATE | |
dc.title | EXPERIMENTAL DETERMINATION OF COMPRESSIONAL WAVE VELOCITIES OF OLIVINE AGGREGATE UP TO 1000°C AT 1GPA | |
dc.type | Статья |
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