| Project/Area Number |
01041039
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Field Research |
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
KONO Masaru Professor of Tokyo Institute of Technology, 理学部, 教授 (20011596)
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| Co-Investigator(Kenkyū-buntansha) |
GILLIAN M. T ヴィクトリア大学, 地球科学, 講師
TATSUMI Yoshiyuki Research Associate of Kyoto University, 理学部, 助手 (40171722)
TSUNAKAWA Hideo Lecturer of Tokai University, 開発技術研究所, 講師 (40163852)
TANAKA Hidefumi Research Associate of Tokyo Institute of Technology, 理学部, 助手 (80108191)
TURNER Gillian M. Lecturer of Victoria University of Wellington
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| Project Period (FY) |
1989
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| Project Status |
Completed (Fiscal Year 1989)
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| Budget Amount *help |
¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 1989: ¥4,000,000 (Direct Cost: ¥4,000,000)
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| Keywords | paleomagnetic secular variation / Taupo Volcanic Zone / Maroa-Taupo area / ignimbrite / K-Ar dating / C-14 dating / Brunhes chron / Matuyama chron |
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| Research Abstract |
Volcanic rocks with K-Ar or C-14 ages were collected at 73 sites from Maroa-Taupo area, Okataina area, and Auckland/Ngatutura/Alexandra Basalt Fields in North Island, New Zealand. K-Ar ages of mainly welded ignimbrites collected from Maroa-Taupo area cover the last 2 My, and statistical comparison of paleomagnetic secular variation between Brunhes and Matuyama chrons will clarify important features of the past geomagnetic field. C-14 ages of rhyolite lavas collected from Okataina area are 5-22 ka, and this will give a good opportunity to set up a paleo-secular variation curve in Southern hemisphere. 8 basalt lavas of K-Ar ages between 1.5 and 2.5 Ma were collected from Ngatutura/Alexandra Basalt Fields, and these will compensate small number of data in early Matuyama chrons from Maroa-Taupo area.
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