Research Project
Grant-in-Aid for Scientific Research (A)
We promoted our research program in order to reconstruct a secular variation of marine Os isotopes by using umber deposits in the Japanese accretionary complexes. Consequently, we are successful in reconstructing a secular variation curve of marine Os isotopes since 〜350 Ma. We have obtained the following results.We published the paper entitled "Major and trace element geochemistry and Os isotopic composition of metalliferous umbers from the Late Cretaceous Japanese accretionary complex" in Geochemistry Geophysics Geosystem (2005). In addition, we published three papers concerning geochemistry of metalliferous umbers and associated greenstones in the Northern Chichibu Belt, central Shikoku, Japan and their depositional age in Resource Geology Special Issue entitled "Seafloor Processes and Related Mineralization in the Panthalassa : The Phanerozoic Records from the Japanese Accretionary Complexes - Part I".We have submitted the paper entitled "Umbers in the Tertiary accretionary complex of Japan : A recorder of Os isotopic composition of ancient seawater" to Geochimica et Cosmochimica Acta that is the top journal of Earth science research field. Further, we have submitted the paper entitled "Haematite formation by oxygenated ground-water more than 2.76 billion years ago" to Nature. This paper is concerning about Re-Os dating. In addition, we prepare another paper entitled "Marine Os isotope record during the Cretaceous : Evidence from metalliferous umbers in the Japanese and Omani accretionary complexes" to be submitted to Earth and Planetary Science Letters.
All 2006 2005 2004 2003 Other
All Journal Article (54 results) Book (6 results) Publications (17 results)
Earth and Planetary Science Letters vol. 242・nos. 1-2
Pages: 39-50
Geochemical Journal (in press)
Journal of Radioanalytical and Nuclear Chemistry vol.269・no. 1(in press)
Geological Society of America Memoir 198
Pages: 269-289
Earth and Planetary Science Letters vol.242
Journal of Radioanalytical and Nuclear Chemistry vol.269(1)(in press)
Geochemical Journal vol.40(in press)
Earth and Planetary Science Letters vol.242・nos.1-2
Journal of Radioanalytical and Nuclear Chemistry vol.269・no.1(in press)
Geochemsitry Geophysics Geosystem vol. 7
Resource Geology vol. 55・no. 4
Pages: 291-299
10017072972
Pages: 289-290
Pages: 353-356
10017073172
Pages: 301-310
10017073009
Chemical Geology vol. 220・no. 3-4
Pages: 303-314
Geochemical Journal vol. 39
Pages: 383-389
130004469137
Geochemistry Geophysics Geosystem vol.6, Q07004
Resource Geology vol.55
10017072965
Chemical Geology vol.220(3-4)
Geochemical Journal vol.39(4)
Geochemsitry Geophysics Geosystem vol : 7
Resource Geology vol.55・no.4
Chemical Geology vol.220・no.3-4
Geochemical Journal vol.39
Geological Society of America Special Paper (In press)
IFREE REPORT for 2003-2004 (In press)
Geochimica et Cosmochimica Acta vol.68
Pages: 4595-4618
Geochemical Journal vol.38(3)
Pages: 295-298
Journal of Volcanology and Geothermal Research vol.135(4)
Pages: 299-329
International Journal of Mass Spectrometry vol.235(1)
Pages: 97-101
Physical Review.C vol.70(1)
Pages: 25501-25501
Geochimica et Cosmochimica Acta 68・2
Geochimica et Cosmochimica Acta 68・11s
資源地質 54巻・1号
Pages: 77-89
Pages: 125-138
月刊地球 26巻・3号
Pages: 173-176
Geochem.J. 38・3
J.Volcanol.Geotherm.Res 135・4
Int.J.Mass Spectrom. 235・1
Phys.Rev.C, 70・1
Precambrian Research vol.125
Pages: 191-243
Geochimica et Cosmochimica Acta vol.67
Pages: 1195-1205
130007040085