2015 Fiscal Year Final Research Report
The relationship between the compositions and eruption ages of mare basalt of the Moon
| Project/Area Number |
25870314
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Solid earth and planetary physics
Petrology/Mineralogy/Economic geology
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 月 / 火成活動 / マントル / チタン / マグマ / クレーター年代学 |
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| Outline of Final Research Achievements |
In order to place constraints on the composition and thermal history of the lunar mantle, in this study, we investigated the relationship between the eruption ages and Ti contents of mare basalts. We found that an increase in Ti content occurred at 2.3 Ga in the Oceanus Procellarum and Mare Imbrium regions, suggesting a possible magma source transition. The eruption ages of mare basalts suggest that a peak of volcanic activity may have occurred from 2.3 to 1.5 Ga. From these results, we propose a hypothesis that a high-Ti hot plume ascending from the core-mantle boundary generated the increase in Ti content and the peak of volcanic activity.
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| Free Research Field |
惑星科学
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