Melting of Iron at Earth’s Inner Core Boundary Based on Fast X-ray Diffraction
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- S. Anzellini
- Commissariat à l’Énergie Atomique, Direction des Applications Militaires Île de France 91297 Arpajon Cedex, France.
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- A. Dewaele
- Commissariat à l’Énergie Atomique, Direction des Applications Militaires Île de France 91297 Arpajon Cedex, France.
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- M. Mezouar
- European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex, France.
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- P. Loubeyre
- Commissariat à l’Énergie Atomique, Direction des Applications Militaires Île de France 91297 Arpajon Cedex, France.
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- G. Morard
- Institut de Minéralogie et de Physique des Milieux Condensés UMR CNRS 7590, Université Pierre et Marie Curie, 75005 Paris, France.
書誌事項
- 公開日
- 2013-04-26
- DOI
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- 10.1126/science.1233514
- 公開者
- American Association for the Advancement of Science (AAAS)
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説明
<jats:title>Hot Enough to Melt Iron</jats:title> <jats:p> Earth's core is divided into a fluid outer core and a solid inner core, both composed predominately of iron at extremely high pressures and temperatures. The boundary between these two regions is largely controlled by the melting point of iron at ∼330 GPa, which in turn influences heat transfer and geodynamo generation. <jats:bold> Anzellini <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6131" page="464" related-article-type="in-this-issue" vol="340" xlink:href="10.1126/science.1233514">464</jats:related-article> , see the Perspective by <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6131" page="442" related-article-type="in-this-issue" vol="340" xlink:href="10.1126/science.1236304">Fei</jats:related-article> ) compressed iron in a laser-heated diamond anvil cell, tracking its structure and texture by using time-resolved x-ray diffraction as the pressure increased to 200 GPa. The melting curve suggests the possibility of high heat flux and partial melting at the core-mantle boundary. </jats:p>
収録刊行物
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- Science
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Science 340 (6131), 464-466, 2013-04-26
American Association for the Advancement of Science (AAAS)
