On Research Achievements in Earth’s D″ Layer in Core-Mantle Boundary: An Important Breakthrough in 21^st Experimental Petrology

• 责任者：Zhang Yuan (School of Earth Sciences and Engineering ; Nanjing University ; Nanjing 210093 ; China) ; Shu Liangshu
• 刊名：Journal of Geology
• 出版年：2010
• 卷期：34(2)
• 关键词：实验岩石学 ; experimental petrology ; 核—幔边界 ; core-mantle boundary ; 高温高压实验 ; high temperature-high pressure experiment
• 页码：p.113-116
• 图表：1 illus., 14 refs.
• 分类号：0400
• issnNo：ISSN1674-3636
• isbnNo：CN32-1796/P

The mineral composition in layer D″ of core-mantle boundary was always thought as MgSiO₃ perovskite. In recent years, through experiment, the Japanese scholars composed a new kind of mineral with high temperature and high pressure that was MgSiO₃ post-perovskite and regarded the post-perovskite mineral phase as the major properties of core-mantle boundary. This important achievement solved the genetic problem of seismic wave anisotropic property of D″ layer that puzzled the academia for a long term, exposed the essential reason of seismic wave inconsistency.