Age estimation of altered coral fossil by pIRIR measurement
| Project/Area Number |
26560157
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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 |
Geography
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| Research Institution | Nara Women's University |
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Principal Investigator |
TAKADA Masashi 奈良女子大学, 人文科学系, 教授 (60273827)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | pIRIR法 / 年代推定 / 変質 / サンゴ化石 / 南西諸島 / ｐＩＲＩＲ法 |
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| Outline of Final Research Achievements |
In this study I dissolved altered corals by hydrochloric acid and investigate characteristics of luminescence signals from the residual materials to discuss possibilities for an elevated-temperature infrared stimulated luminescence (pIRIR; post-IR IRSL) dating.
The insoluble residual materials in coral fossils taken from Miyako and Yonaguni Island, southwestern Ryukyus, southwestern Japan , the grain size of which is less than ca. 100 micron meter, show BLSL and IRSL signals. I could get an age constrain from the fossil coral using residual materials after the acid treatment, indicating that fossil coral sometimes contains a certain amount of minerals like quartz and feldspar. I think post-IR IRSL dating of the residual materials from fossil coral after acid treatment gives us a great possibility to date altered fossil coral.
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Report
(4 results)
Research Products
(8 results)
