QQ客服 官方微博 反馈留言

	In situ ultrasonic velocity measurements across the olivine-spinel transformation in Fe2SiO4
	Liu, Qiong ; Liu, Wei ; Whitaker, Matthew L. ; Wang, Liping ; Li, Baosheng
刊名	american mineralogist
	2010
关键词	Olivine-spinel phase transformation Fe2SiO4 velocity contrasts ultrasonic measurements iron concentration COMPRESSIONAL-WAVE VELOCITIES HIGH-PRESSURE PHASE-TRANSITIONS METASTABLE OLIVINE HIGH-TEMPERATURE ROOM-TEMPERATURE 12 GPA ELASTICITY MANTLE KINETICS
DOI	10.2138/am.2010.3369
英文摘要	Compressional (P) and shear (S) wave velocities across the olivine-spinel transformation in Fe2SiO4 were investigated in situ using combined synchrotron X-ray diffraction, X-ray imaging, and ultrasonic interferometry up to 5.5 GPa along the 1173 K isotherm. The onset of the spinel to olivine transformation at 4.5 GPa and olivine to spinel transition for Fe2SiO4 at 4.8 GPa was concurrently observed from X-ray diffraction, the amplitude of the ultrasonic signals, the calculated velocities, and the ratio of P and S wave velocities (v(P)/v(S)). No velocity softening was observed prior to the fayalite to spine! transition. The velocity contrasts across the Fe2SiO4 spinel to fayalite phase transition are derived directly from the measured velocities, which are 13 and 12% for P and S waves, respectively, together with a density contrast of 9.4%. A comparison with literature data indicates that the changes in compressional-wave velocity and density across the olivine-spinel transformation in Fe2SiO4 are comparable to those with different iron concentrations in the (Mg,Fe)(2)SiO4 solid solution, whereas the shear wave velocity contrast decreases slightly with increasing iron concentration.; Geochemistry & Geophysics; Mineralogy; SCI(E); 2; ARTICLE; 7; 1000-1005; 95
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/395645]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Liu, Qiong,Liu, Wei,Whitaker, Matthew L.,et al. In situ ultrasonic velocity measurements across the olivine-spinel transformation in Fe2SiO4[J]. american mineralogist,2010.
APA	Liu, Qiong,Liu, Wei,Whitaker, Matthew L.,Wang, Liping,&Li, Baosheng.(2010).In situ ultrasonic velocity measurements across the olivine-spinel transformation in Fe2SiO4.american mineralogist.
MLA	Liu, Qiong,et al."In situ ultrasonic velocity measurements across the olivine-spinel transformation in Fe2SiO4".american mineralogist (2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。