Journal
PHYSICS OF THE EARTH AND PLANETARY INTERIORS
Volume 183, Issue 1-2, Pages 190-195Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.pepi.2010.07.004
Keywords
Wadsleyite; Ringwoodite; Rheology; Viscosity; Mantle dynamics; Mantle transition zone
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Funding
- global COE program Deep Earth Mineralogy
- Ministry of Education, Culture, Sports, Science, and Technology of the Japanese Government [16075206, 20001005]
- Grants-in-Aid for Scientific Research [20001005, 16075206] Funding Source: KAKEN
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Technical developments in high-pressure and high-temperature generation have been made, adopting a recently devised multi-anvil 6-6 (MA 6-6) assembly with tungsten carbide (WC) anvils. As a result, the pressure and temperature conditions available in a cubic-anvil DIA type apparatus have been extended to 20 GPa and 2000 K. Using this assembly operated in a deformation-DIA (D-DIA) apparatus, a deformation experiment to a strain of 15% on a mixture of wadsleyite and ringwoodite was successfully conducted at 16 GPa and 1700 K and at a strain rate of 6 x 10(-5) s(-1), demonstrating potential of the present MA 6-6 assembly as an important tool to investigate rheological properties of high-pressure phases under the conditions of the mantle transition zone. (C) 2010 Elsevier B.V. All rights reserved.
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