1993 Fiscal Year Final Research Report Summary
Mechanism of enrichment and dispersion of minor elements
| Project/Area Number |
04640744
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
鉱物学(含岩石・鉱床学)
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| Research Institution | Keio University |
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Principal Investigator |
SHIKAZONO Naotatsu Keio University, Department of Earth Sciences, Associate Professor, 理工学部, 助教授 (10011751)
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| Project Period (FY) |
1992 – 1993
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| Keywords | Kuroko deposits / Back arc basin / Ridge / Hydrothermal system / Water-rock reaction / Global geochemical flux / Ocean chemistry / Minor elements |
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| Research Abstract |
Mass transfer in back arc basin hydrothermal system was investigated. Mariana back arc basin hydrothermal are deposits, Kuroko deposits in Japan and hydrothermally altered rocks in the Kuroko area were studied in detail. Analytical results of hydrothermally altened rocks in the Kuroko area show the alteration trend similar to those in the ridge system. Rare earth elements pattern and distribution and chemistry of alteration minerals provide constraints on the evolution of hydrothermal system.
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