The Bridgmanite-Akimotoite-Majorite Triple Point Determined in Large Volume Press and Laser-Heated Diamond Anvil Cell

被引：6

作者：

Kulka, Britany L. ^{[1
]}

Dolinschi, Jonathan D. ^{[1
]}

Leinenweber, Kurt D. ^{[2
]}

Prakapenka, Vitali B. ^{[3
]}

Shim, Sang-Heon ^{[1
]}

机构：

[1] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA

[2] Arizona State Univ, Eyring Mat Ctr, Tempe, AZ 85287 USA

[3] Univ Chicago, GeoSoilEnviroCars, Chicago, IL 60439 USA

来源：

MINERALS | 2020年 / 10卷 / 01期

关键词：

triple point; bridgmanite; akimotoite; majorite; large-volume press; laser-heated diamond anvil cell; PHASE-TRANSITION; MG2SIO4; BOUNDARY; STATE; EARTH; RAMAN; MGO; TRANSFORMATION; PEROVSKITE; PLATINUM;

D O I：

10.3390/min10010067

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The bridgmanite-akimotoite-majorite (Bm-Ak-Mj or BAM) triple point in MgSiO3 has been measured in large-volume press (LVP; COMPRES 8/3 assembly) and laser-heated diamond anvil cell (LHDAC). For the LVP data, we calculated pressures from the calibration provided for the assembly. For the LHDAC data, we conducted in situ determination of pressure at high temperature using the Pt scale at synchrotron. The measured temperatures of the triple point are in good agreement between LVP and LHDAC at 1990-2000 K. However, the pressure for the triple point determined from the LVP is 3.9 +/- 0.6GPa lower than that from the LHDAC dataset. The BAM triple point determined through these experiments will provide an important reference point in the pressure-temperature space for future high-pressure experiments and will allow mineral physicists to compare the pressure-temperature conditions measured in these two different experimental methods.

引用

页数：12

共 46 条

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