Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073950 |
Tracking silica in Earth's upper mantle using new sound velocity data for coesite to 5.8 GPa and 1073 K | |
Chen, Ting1; Liebermann, Robert C.1,2; Zou, Yongtao2,3; Li, Ying2,4; Qi, Xintong1; Li, Baosheng1,2 | |
2017-08-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:15 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | The compressional and shear wave velocities for coesite have been measured simultaneously up to 5.8 GPa and 1073 K by ultrasonic interferometry for the first time. The shear wave velocity decreases with pressure along all isotherms. The resulting contrasts between coesite and stishovite reach similar to 34% and similar to 45% for P and S wave velocities, respectively, and similar to 64% and similar to 75% for their impedance at mantle conditions. The large velocity and impedance contrasts across coesite-stishovite transition imply that to generate the velocity and impedance contrasts observed at the X-discontinuity, only a small amount of silica would be required. The velocity jump dependences on silica, d(lnV(P))/d(SiO2) = 0.38 (wt %)(-1) and d(lnV(S))/d(SiO2) = 0.52 (wt %)(-1), are utilized to place constraints on the amount of silica in the upper mantle and provide a geophysical approach to track mantle eclogite materials and ancient subducted oceanic slabs. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000408379000023 |
WOS关键词 | EQUATION-OF-STATE ; HIGH-PRESSURE ; ELASTIC PROPERTIES ; SEISMIC DISCONTINUITY ; X-DISCONTINUITY ; PHASE-TRANSITIONS ; CENTRAL CHINA ; STISHOVITE ; ECLOGITE ; TEMPERATURES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27787 |
专题 | 气候变化 |
作者单位 | 1.SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA; 2.SUNY Stony Brook, Inst Mineral Phys, Stony Brook, NY 11794 USA; 3.Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun, Jilin, Peoples R China; 4.China Earthquake Adm, Inst Earthquake Sci, Key Lab Earthquake Predict, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Ting,Liebermann, Robert C.,Zou, Yongtao,et al. Tracking silica in Earth's upper mantle using new sound velocity data for coesite to 5.8 GPa and 1073 K[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(15). |
APA | Chen, Ting,Liebermann, Robert C.,Zou, Yongtao,Li, Ying,Qi, Xintong,&Li, Baosheng.(2017).Tracking silica in Earth's upper mantle using new sound velocity data for coesite to 5.8 GPa and 1073 K.GEOPHYSICAL RESEARCH LETTERS,44(15). |
MLA | Chen, Ting,et al."Tracking silica in Earth's upper mantle using new sound velocity data for coesite to 5.8 GPa and 1073 K".GEOPHYSICAL RESEARCH LETTERS 44.15(2017). |
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