2010 Fiscal Year Final Research Report
Study of ultrabasic (peridotitic) pseudotachylytes
| Project/Area Number |
20540466
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | Kyoto University |
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Principal Investigator |
OBATA Masaaki Kyoto University, 大学院・理学研究科, 教授 (20126486)
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| Co-Investigator(Renkei-kenkyūsha) |
KANAGAWA Kyuichi 千葉大学, 大学院・理学研究科, 教授 (40185898)
OZAWA Kazuhito 東京大学, 大学院・理学系研究科, 教授 (90160853)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 断層 / かんらん岩 / 摩擦溶融 / マントル / 地震 / マイロナイト / Balmuccia |
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| Research Abstract |
Ultramafic pseudotachylyte from the Balmuccia peridotite (N. Italy) was classified into two major categories : (1) igneous textured type and (2) mylonitic type. It was revealed from their field relationships and mineralogical characteristics that the latter type was generated earlier and thus at greater depths than the former type. In particular, the recognition and characterization of the latter type is a major achievement of our project. This discovery has opened up a way to understand the seismogenic processes in the upper mantle in more detailed and realistic ways.
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Research Products
(12 results)
