Detailed study of partial melting process in the island-arc type high-temperature metamorphic terrane

岛弧型高温变质地体部分熔融过程的详细研究

• 批准号: 07640606
• 负责人: OSANAI Yasuhito
• 金额: $ 1.41万
• 依托单位: FUKUOKA UNIVERSITY OF EDUCATION
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07640606/
• 关键词: High-T metamorphic rock; Partial melting; Granitic magma; F-biotite; Sapphirine; Hidaka metamorphic belt; Higo metamorphic terrane; Napier Complex; グラニュライト

The main purpose of this research project is the detailed study of partial melting process and their related granitic magma producing system in the island-arc type lower crust as seen the high-temperature metamorphic terrane in Japan, the Hidaka metamorphic belt and the Higo metamorphic terrane. The results were compared with the typical high-temperature metamorphic terranes (Sri Lanka and Napier Complex, Antarctica). Brief results are as follows.1.Restarted the experimental work for dehydration melting of fluorine-biotite at the University of New South Wales, Australia. The stability field of the high-fluorine biotite expands into higher temperature side than fluorine-free biotite. Biotite of XF (F/ (F+Cl+OH) )=0.3 is still stable at 900 MPa, 1025ﾟC and those of XF=0.6 the stability field expand up to 900 MPa, 1075ﾟC.A part of the results were reported at the International Symposium on Antarctic Earth Sciences in Italy (Sep, 1995) and the International Geological Congress in China (Au … More g, 1996).2.Sixty days field research was carried out in the Higo metamorphic terrane, west central Kyushu. During the field work in 1995, the sapphirine-corundum and the garnet-corundum granulites were found in the central part of the terrane. This type of hyper aluminous silica-undersaturated granulite is known only in very (ultra) high temperature xenolith of Cortlandt Complex, USA.In the Higo metamorphic terrane, those granulites as the restite were derived from high temperature (>950ﾟC at 800-1000 MPa) dehydration melting of fluorine biotite (XF=0.2) -bearing metapelite. A part of the results was talked at the 1996 annual meeting of the Geological Society of Japan etc. and submitted to international journal.3.Sixty days another field survey was carried out in the Hidaka metamorphic belt to observe the details of partial melting of pelitic and mafic metamorphic rocks. Especially in the mafic metamorphic rocks it was identified that the bulk chemical compositions of amphibolites are clearly different between the north and the south of the belt. A part of the results was reported in the Memoir of the Geological Society of Japan. Less

对脚趾 - arc类型的详细研究和耐受的花岗岩岩浆产生系统的主要目的是日本高温变质的地壳，希达卡变质带和希戈·莫尔型地下的基础。典型的高温变质地球。1。在澳大利亚新南威尔士大学的氟二酸盐脱水融化的实验性工作中Biotite。意大利的南极地球ES（1995年）和中国的国际地质大会（More G，1996年）高铝二氧化硅的类型已知Cortlandt Complex GO变质地层的高温（Ultra）高温异晶石，这些颗粒作为固定岩的高温（在800-1000 MPA时> 950°C）衍生而成xf = 0.2） - 日本的拟元社会，并提交给国际期刊。3。六天是在塔克（Taka）变质带上进行的一次现场调查，以观察骨质和镁铁质变质岩石岩石岩石被确定为在LT之间的两栖动物差异

项目成果

小山内 康人: "肥後変成帯の地殻深部レスタイト-含サフィリングラニュライトの形成過程-" 月刊地球. 19. 97-103 (1997)

小山内靖人：“肥后变质带的深部地壳休憩岩 - 含蓝宝石麻粒岩的形成过程 -” 地球月刊 19. 97-103 (1997)。

Osanai, Y., Shiraishi, K., Takahashi, Y.et al., Geological map of Brattnipene, Sphir Rondane Mountains, Antarctica: Antarcti Geological Map Series. 34. 29 (1996)

Osanai, Y.、Shiraishi, K.、Takahashi, Y.等人，南极洲 Sphir Rondane 山脉 Brattnipene 地质图：南极地质图系列。

Kagami,H.: "Rb-Sr and Sm-Nd ages from the Highland Complex of Sri Lanka" Proceedings of the Japan Academy. Ser.B,5. 139-144 (1995)

Kagami,H.：“斯里兰卡高地复合体的 Rb-Sr 和 Sm-Nd 年龄”日本科学院院刊。

Kagami, H., Owada, M., Osanai, Y.and Hiroi, Y.: "Rb-Sr and Sm-Nd ages from the Highland Complex of Sri Lanka." Proceedings of the Japan Academy, Ser.B. 5. 139-144 (1995)

Kagami, H.、Owada, M.、Osanai, Y. 和 Hiroi, Y.：“来自斯里兰卡高地复合体的 Rb-Sr 和 Sm-Nd 年龄。”

Osanai,Y.: "Sapphirine gvonulite and related high P.T metanorphe rocks from Highland Complex,SriLanka" Govdwana Research Group Misc.Publ-. 4. 107-108 (1996)

Osanai,Y.：“斯里兰卡高地杂岩中的蓝宝石软岩和相关的高 P.T 变岩岩石”Govdwana 研究小组 Misc.Publ-。