Structural Analysis of Maskelynite and Genesis of Martian Meteorites
| Project/Area Number |
15K13589
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Petrology/Mineralogy/Economic geology
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 鉱物 / 非晶質 / 構造解析 / 衝撃圧縮 / 酸化物 / シンクロトロン放射光 / 隕石 / 長石 |
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| Outline of Final Research Achievements |
In order to analyze the amorphous structure, a solar-slit system and a sample stage was prepared for the X-ray diffractometer installed at IMSS. The structural analysis of maskelynite in ASCA881757, was performed by the developed analytical system. As for the synthesis of artificial maskelynite, present trial by the impact compression test did not succeed to obtain a sample with fully amorphous state. The similar test of parent olivine could not serve the black one with nano-meter sized iron. These observations suggest that the formation of maskelynite and black olivine in Martian meteorites require the high impact compression together with the following high temperature heating. This project also studied the structure of materials produced by the meteorite impact. As an example, the local structural analysis of the trace elements in the clay of K-Pg boundary was conducted and succeeded to discuss the genesis of such interesting materials.
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Report
(4 results)
Research Products
(8 results)
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[Journal Article] Weathering and precipitation after meteorite impact of Ni, Cr, Fe, Ca and Mn in K-T boundary clays from Stevns Klint2016
Author(s)
Yumiko Miyano, Akira Yoshiasa, Tsubasa Tobase, Hiroshi Isobe, Hidetomo Hongu, Maki Okube, Akihiko Nakatsuka, Kazumasa Sugiyama
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Journal Title
Journal of Physics: Conference Series
Volume: 712
Pages: 012097-012097
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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