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Carbon isotope fractionation between iron carbides and Fe-C melt under high pressure and high temperature conditions

Advisor’s Name

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Position

Assistant Professor

Affiliation

Hawaii Institute of Geophysics and Planetology

Webpage

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E-mail

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Research Interests and Current Projects

Our research takes a two-pronged approach: using the multianvil apparatus for sample syntheses and high pressure-temperature measurements on large volume samples and the diamond anvil cell for determination of elastic and acoustic properties, combining with laser, X-ray and microanalytical techniques. My current research interest focuses on deep carbon cycle.

Title of the URP

Carbon isotope fractionation between iron carbides and Fe-C melt under high pressure and high temperature conditions

URP Host

  Advisor’s Institution          USTC

URP Financial Support

  No       Living Cost       Traveling Cost    

  Living and Traveling Cost

  Others (please specify): Instrumentation time/materials and supplies

URP Start Time

7/18/2016

URP End

Time

9/9/2016

Brief Description of the URP

As a potential host of carbon and a redox couple (Fe-C) determining the nature of reduced phases, iron carbides are considered to play an important role in the mantle. Detectable carbon isotope fractionation may accompany the crystallization of Fe-C melt under mantle conditions. In this URP, the student will employ the 2000-ton multi-anvil press (MAP) to conduct high-pressure and high-temperature experiments on carbide crystallization from a Fe-C melt at the Hawaii Institute of Geophysics and Planetary of the University of Hawaii. The high-temperature isotope fractionation between iron carbides, Fe3C and Fe7C3, and Fe-C melt will be determined up to 20 GPa. Carbon isotopic composition measurements will be conducted at University of Hawaii and/or USTC. The anticipated results could have implications onto the carbon isotope signatures of meteorites and carbon isotope distribution in Earth’s mantle. The high-pressure and high-temperature experiments using MAP can be completed within student’s 2-month visit.

Requirements for Students

and Prerequisite Courses

Basic skills in experimental petrology and knowledge in isotope geochemistry.