Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geology A
high -pressure phase of severalminerals , includingmagnesium silicate
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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The temperature at the upper boundary of the lens, where the phase transition from perovskite to postperovskite occurs, is around 2,500 kelvins 4,000° F.
The Temperature At The Earth's Core Staq Mavlen 2006
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The temperature at the upper boundary of the lens, where the phase transition from perovskite to postperovskite occurs, is around 2,500 kelvins 4,000° F.
Archive 2006-11-01 Staq Mavlen 2006
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Using forms of a synthetic, solid compound containing calcium, iridium and oxygen as analogs for perovskite and postperovskite, Walte et al. conduct laboratory experiments to simulate the perovskite transitions under high temperatures and pressures.
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At high pressures and temperatures, perovskite transforms into an altered crystal-packing form called postperovskite.
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Expanding on past research that demonstrated that crystal lattice orientations in the analog postperovskite alter when deformed, the authors find that the transformation of the analog perovskite to analog postperovskite itself yields a crystal lattice structure different from postperovskite deformation textures.
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