Phase equilibrium study of mantle minerals at high pressure and high temperature.
高压高温下地幔矿物的相平衡研究。
基本信息
- 批准号:63540638
- 负责人:
- 金额:$ 1.47万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for General Scientific Research (C)
- 财政年份:1988
- 资助国家:日本
- 起止时间:1988 至 1989
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The author has developed the basic techniques for high pressure and high temperature experiments for pressures above 25 GPa and temperatures up to 2000゚C using an MA8 apparatus. A performance test has been adopted to evaluate different anvil materials and optimum conditions for high pressure generation have been explored. Moreover, improvements in the furnace assembly has been made to reach higher temperatures and to keep thermocouple failure minimum. Further, a digital recording system equipped with a micro-computer has been introduced, which has made phase equilibria studies to be conducted in greater accuracy than before.On the basis of these technical improvements in high pressure and temperature experiments, phase equilibrium studies have been made for major mantle minerals as follows: Diopside was found to decompose into assemblages of CaSiO_3 Perovskite plus MgSiO_3 components at pressures greater than 18 GPa. Precise determination of the phase relations in the system enstatite-pyrope has been made at pressures up to 27 GPa and temperatures at 1500゚C. Further, transformation mechanism of forsterite to spinal structures has been studied on the basis of both MA8 and transmission electron microscope (TEM) techniques.Phase transformations in pyrolite and MORB compositions have been estimated according to the present and recently determined phase equilibrium data by the authors. A mineral physics test has been made, in which seismic velocity and density changes associated with these phase transformations in a pyrolite composition are compared with those derived from geophysical observations. The results show that the calculated velocity and density profiles for the pyrolite mantle agree quite well with the observed distributions throughout the upper mantle and the transitions region.
作者开发了使用MA 8装置进行压力大于25 GPa、温度高达2000 ℃的高压和高温实验的基本技术。通过性能试验对不同顶锤材料进行了评价,并探索了产生高压的最佳条件。此外,对炉组件进行了改进,以达到更高的温度,并将热电偶故障降至最低。此外,还引进了配有微型计算机的数字记录系统,使相平衡研究的精度比以前更高。在高压和高温实验技术改进的基础上,对主要地幔矿物进行了如下相平衡研究:透辉石在压力大于18 GPa时分解为CaSiO_3-Peroxidase + MgSiO_3组分的组合。在压力高达27 GPa和温度为1500 ℃的条件下,精确测定了顽火辉石-镁铝榴石体系的相关系。在此基础上,利用MA 8和TEM技术研究了镁橄榄石向尖晶石结构转变的机制,并根据作者目前和最近测定的相平衡数据估算了地幔岩和MORB成分中的相变。矿物物理测试,其中地震速度和密度的变化与这些相变的地幔岩组合物进行了比较,来自地球物理观测。结果表明,地幔速度和密度的计算值与上地幔和过渡区的观测值吻合较好。
项目成果
期刊论文数量(9)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
T.Irifune: "Phase transformations in diopside CaMgSi_2O_6 up to 25 GPa" Geophys.Res.Lett.16. 187-190 (1989)
T.Irifune:“透辉石 CaMgSi_2O_6 中高达 25 GPa 的相变”Geophys.Res.Lett.16。
- DOI:
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入船徹男: "高圧下の鉱物物性とマントルの物質構成" 鉱物学雑誌.
Tetsuo Irifune:“高压下矿物的物理性质和地幔的物质组成”《矿物学杂志》。
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T.Irifune: "Phase fransformations in diposide CaMgSi_2O_6 up+O 25Gpa." Geophys.Res.Lett. 16. 187-190 (1989)
T.Irifune:“二宝苷 CaMgSi_2O_6 中的相变高达 O 25Gpa。”
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- 影响因子:0
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T.Irifune: "Eclogite-garnetite transformation at high pressure and its bearing on the occurrence of garnet inclusions in diamond.In:Kimberlites and Related Rocks:Vol.2-their manthe/crust setting,diamonds and diamond exploration." Blackwell Sci/Pub.,Clayto
T.Irifune:“高压下的榴辉石-石榴石转变及其对钻石中石榴石包裹体的影响。见:金伯利岩和相关岩石:第 2 卷 - 他们的地壳镶嵌、钻石和钻石勘探。”
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- 影响因子:0
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Irifune, T., Hibberson, W.O. and Ringwood, A.E.: "Eclogitegarnetite transformation at high pressure and its bearing on the occurrence of garnet inclutions in diamond." Kimberlites and Related Rocks, Vol.2-their mantle/crust setting, diamonds and diamond e
入船,T.,希伯森,W.O.
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IRIFUNE Tetsuo其他文献
Melting Phase Relations of KLB-1 Peridotite and Mid-Ocean Ridge Basalt and Gravitational Stabilities of Partical Silicate Melts at the Uppermost Lower Mantle
KLB-1橄榄岩和大洋中脊玄武岩的熔融相关系以及下地幔最上部颗粒硅酸盐熔体的重力稳定性
- DOI:
10.4131/jshpreview.29.75 - 发表时间:
2019 - 期刊:
- 影响因子:0
- 作者:
KUWAHARA Hideharu;NOMURA Ryuichi;NAKADA Ryoichi;IRIFUNE Tetsuo - 通讯作者:
IRIFUNE Tetsuo
日本南極地域観測隊アーカイブ空中写真を用いた数値表層モデル作成とその有用性
利用日本南极区域调查档案航空照片创建数值表面模型及其实用性
- DOI:
- 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
KUWAHARA Hideharu;NOMURA Ryuichi;NAKADA Ryoichi;IRIFUNE Tetsuo;川又基人,土井浩一郎,澤柿教伸,菅沼悠介 - 通讯作者:
川又基人,土井浩一郎,澤柿教伸,菅沼悠介
IRIFUNE Tetsuo的其他文献
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{{ truncateString('IRIFUNE Tetsuo', 18)}}的其他基金
Chemical composition of the lower mantle and differentiation of the early Earth
下地幔的化学成分与早期地球的分异
- 批准号:
25220712 - 财政年份:2013
- 资助金额:
$ 1.47万 - 项目类别:
Grant-in-Aid for Scientific Research (S)
Behavior ofFe-bearing materials under very high pressure and mineralogy of the lowermost mantle and the inner core
极高压下含铁材料的行为以及下地幔和内核的矿物学
- 批准号:
20001005 - 财政年份:2008
- 资助金额:
$ 1.47万 - 项目类别:
Grant-in-Aid for Specially Promoted Research
Searching mineralogy of the Earth's deep interior using a combination of synchrotron radiation and high-pressure technology
结合同步辐射和高压技术探索地球内部深处的矿物学
- 批准号:
15GS0215 - 财政年份:2003
- 资助金额:
$ 1.47万 - 项目类别:
Grant-in-Aid for Creative Scientific Research
Mineral physics studies using third-generation synchrotron facility
使用第三代同步加速器设备进行矿物物理研究
- 批准号:
11694088 - 财政年份:1999
- 资助金额:
$ 1.47万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Determination of post-spinel and post-majorite transitions by in situ X-ray observations with synchrotron radiation.
通过同步加速器辐射原位 X 射线观察确定后尖晶石和后多数长石转变。
- 批准号:
10440128 - 财政年份:1998
- 资助金额:
$ 1.47万 - 项目类别:
Grant-in-Aid for Scientific Research (B).
High Pressure Phase Transformations Down to the Lower Mantle Conditions and Implications for the Nature of the Seismic Discontinuities.
下地幔条件下的高压相变及其对地震不连续性性质的影响。
- 批准号:
07454105 - 财政年份:1995
- 资助金额:
$ 1.47万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Rheological properties of mantle minerals.
地幔矿物的流变特性。
- 批准号:
04452082 - 财政年份:1992
- 资助金额:
$ 1.47万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
Development of high pressure and high temperature apparatus with a new diamond composite (ADC).
使用新型金刚石复合材料(ADC)开发高压高温装置。
- 批准号:
04554033 - 财政年份:1992
- 资助金额:
$ 1.47万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research (B)
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