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. : Zr ( 90 /) Ti ( 3700 /) ; Lu . , , . , - , , , ­ : ( ) ( ). : 1. . ., . ., . . // , . 4, 2001 2. . ., . . . .: , 1997, 225 . 3. Pearce J. A. A user's guide to basalt discrimination diagrams diagrams // Short Course Notes - Geological Association of Canada, 1996, P. 79-113 4. Sun S.-S., McDonough W. F. Chemical and isotopic systematics of basalts: implication for mantle composition and processes // Magmatism in the ocean basins., 1989

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[3]. [2,5]. 1991-1995 . (> 1 ), - , , , , , , . , 0.25 30 , , , , . . . ( ) . , , . (1991-1995) . , , . 5 : (1) ­ , >1.0 . , , , . (.1). , , . (2) ­ , ~ 0.25 . (.1). . (3) ­ , ~ 0.1-0.2 . , (.1). .

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(4) ­ , ~ 100 . , . (5) ­ , 0.06 - 0.1 0.3-0.5 . () . (.1) . . , (.1). . [6], : « » «». « » ( 1); , ( 3); ( 5). , «» ( 1); ( 2); ( 4); ( 5). Si ­ AlIV+(Na+K)A . , AlIV , AlIV, - . , «» () (), « » (.2). « ». , , . , . Mg# - Fe3+/Fe2+ . « » . , , (Mg#) Fe3+/Fe2+,
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Fe3+/Fe2+. (, , ) . Fe3+/Fe2+ , (.1). , , , , . ( 1) ( 5) Fe3+/Fe2+ . [1,2,7-11], , , 19911995 . (>1000єC) (~ 800єC). 1- . 5- . ( 2, 3, 4) 1. .

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.. , . : 1. Browne, B.L., Eichelberger, J.C., Patino, L.C., Vogel, T.A., Uto, K., Hoshizumi, H. Magma mingling as indicated by texture and Sr/Ba ratios of plagioclase phenocrysts from Unzen volcano, SW Japan.//J.Volcanol. Geotherm.Res. 2006. 154, P.103­116. 2. Browne, B.L., Eichelberger, J.C., Patino, L.C., Vogel, T.A., Dehn, J., Uto, K., Hoshizumi, H. Generation of porphyritic and equigranular mafic enclaves during magma recharge events at Unzen volcano, Japan.//J. Petrol.2006. V.47. 2. P.301-328.
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3. Hoshizumi, H., Uto, K., Watanabe, K., Geology and eruptive history of Unzen volcano, Shimabara Peninsula, SW Japan.//J. Volcanol. Geotherm. Res. 1999. 89. P. 81-94. 4. Ishihara, K., Yoshida, A. Configuration of the Philippine Sea slab and seismic activity around Kyushu.//J. Seismol. Soc. Jpn. 1992. 45, P. 45­51. 5. Kimura, M. Back-arc rifting in the Okinawa Trough.//Mar. Petrol. Geol. 1985. 2. P.222­240. 6. Leake,B.E. Nomenclature of amphiboles: report of the Subcommittee on Amphiboles of the International Mineralogical Association, Comission on New Minerals and Mineral Names.//Can. Mineral. 1997. V. 35. 1. P. 219-246. 7. Nakada, S., Fujii, T. Preliminary report on the activity at Unzen Volcano Japan, November 1990­November 1991: dacite lava domes and pyroclastic flows.// J.Volcanol. Geotherm. Res.1993. 54. P.319­333. 8. Nakada, S., Motomura, Y., Petrology of the 1991-1995 eruption at Unzen: effusion pulsation and groundmass crystallization.//J. Volcanol. Geotherm. Res. 1999. 89. P. 173-196. 9. Nakamura, M. Continuous mixing of crystal mush and replenished magma in the ongoing Unzen eruption.//Geology. 1995. 23, P. 807­810. 10. Sato, H., Nakada, S., Fujii, T., Nakamura, M., Suzuki-Kamata, K. Groundmass pargasite in the 1991­1995 dacite of Unzenvolcano: phase stability experiments and volcanological implications.//J.Volcanol. Geotherm. Res. 1999. 89. P. 197­212. 11. Venezky, D.Y., Rutherford, M.J. Petrology and Fe­Ti oxide re-equilibration of the 1991 Mount Unzen mixed magma.//J. Volcano. Geotherm. Res. 1999. 89, P. 213­230.

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