Contamination rate of granitic rocks and metamorphic grade of metamorphic rocks by using ammonium content in biotite

利用黑云母中铵含量测定花岗岩的污染率和变质岩的变质程度

• 批准号: 04640738
• 负责人: TAINOSHO Yoshiaki
• 金额: $ 1.66万
• 依托单位: Faculty of Human Development, Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04640738/
• 关键词: ammonium; granite; metamorphic grade; biotite; contamination; granitization

In the metamorphic rocks, ammonium content of biotites from granulite is low compared with those of biotites from hornblende-biotite gneiss. Systematic decreasing tendency of ammonium content was recognized in biotite from amphibolite facies to granulite facies. Ammonium might be liberated from biotite in the granulite and the ammonium content of the biotites would not record the existence of nitrogen in the original rocks.Ammonium content of biotites in the granitic rocks studied is closely related to the granite type and the occurrence. In the metamorphic origin granitic rocks, the high ammonium content of their biotites is due to to the metamorphic fluid enriched in ammonium. The ammonium content of biotites is very low low in M-type granite, slightly low in I-type granite, somewhat higher in A-type granite and higher in S-type granite.

在变质岩中，麻粒岩中黑云母的铵含量低于角闪-黑云母片麻岩中黑云母的铵含量。从角闪岩相到麻粒岩相，黑云母中铵含量有系统的降低趋势。麻粒岩中的黑云母中可能有铵的释放，但其铵含量并不能反映出原岩中氮的存在，所研究的花岗岩中黑云母的铵含量与花岗岩的类型和产状密切相关。在变质成因的花岗岩中，黑云母的高铵含量是由于变质流体中富铵的结果。黑云母铵含量很低，M型花岗岩中较低，I型花岗岩中稍低，A型花岗岩中稍高，S型花岗岩中较高。

项目成果

Arakawa. Y. , Takahashi. Y. and Tainosho. Y.: "Nd and Sr isotope characteristics of the plutonic rocks in the Sor Rondane Mountains. east Antarctica" Proceedings of the NIPR Symposium on Antarctica Geosciences. 7. 49-59 (1994)

荒川。

田結庄 良昭・高橋 裕平 小山内 康人・土屋 範芳・先山 徹 大和田 正明: "南極,セールロンダーネ山地の花南岩のアンモニウム含有量と微量化学組成" 松本征夫教授記念論文集. 515-522 (1992)

Yoshiaki Tayusho、Yuhei Takahashi、Yasuto Koyamauchi、Noriyoshi Tsuchiya、Toru Sakiyama 和 Masaaki Owada：“南极洲 Serrondane 山脉哈南岩石的铵含量和微量化学成分”Yukio Matsumoto 教授纪念论文集（1992 年）。

田結庄 良昭: "変成岩および花崗岩の黒雲母中のアンモニウム含有量と岩石中の炭素含有量" 地球科学. 48. 353-363 (1994)

Yoshiaki Tayusho：“变质岩和花岗岩黑云母中的铵含量和岩石中的碳含量”地球科学 48. 353-363 (1994)。

Tainosho, Y.: "Ammonium in biotites and carbon in whole rocks from metamorphic and granitic rocks." Earth Science. vol.48. 353-363 (1994)

Tainosho, Y.：“黑云母中的铵和变质岩和花岗岩的整个岩石中的碳。”

ARAKAWA,Y.,TAKAHASHI,Y., and TAINOSHO,Y.: "Nd and Sr isotope characteristics of the plutonic rocks in the Sor Rondane Mountains,east Antarctica" Proceedings of the NIPR Symposium on Antarctic Geosciences. 7. 49-59 (1994)

ARAKAWA,Y.、TAKAHASHI,Y. 和 TAINOSHO,Y.：“南极洲东部 Sor Rondane 山脉深成岩的 Nd 和 Sr 同位素特征”NIPR 南极地球科学研讨会论文集。