Investigation of deep fluid using maluti-solid-phase inclusions

利用马鲁蒂固相包裹体研究深层流体

• 批准号: 22244067
• 负责人: HIRAJIMA Takao
• 金额: $ 30.87万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2013-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22244067/
• 关键词: 変成岩; 深部流体; 多相固体包有物; ICP-MS; LA-ICP-MS; 流体包有物; クラッシュリーチング法; ICP-MS分析

Multi-solidphase inclusions (MSIs) composed of clinozoisite (Czo) + ky + qz have been found within garnets and in the matrix of metapelits from the Makbal complex in Kyrgyz. The reconstructed compositions of MSIs are consistent with lawsonite (Lws). Petrological study showed that Lws was stable at UHP stage (ca. 3 GPa and 550C) and decomposed to the MSIs during isothermal decompression around 1.6 GPa and 550C. Trace element characteristics of Czo grains in the MSIs show a flat REE chondrite-normalized pattern, identical to the typical REE pattern of Lws. Thus, the REE content of Czo in the MSIs included in garnet was likely inherited from the former Lws as the decomposition reaction took place isolated from the matrix. Lws decomposition and Czo-forming reactions accompany fluid release during the isothermal decompression stage, implying that the fluids can be generated not only during subduction, but also during exhumation of UHP rocks in cold subduction settings.

在吉尔吉斯斯坦Makbal杂岩中的石榴石和变质矿物基质中发现了由斜锆石（Czo）+ ky + qz组成的多固相包裹体。重构的MSI组成与硬硅钙石（LWS）一致。岩石学研究表明，LWS稳定在超高压阶段（约1000年）。在1.6GPa和550 ℃左右的等温减压过程中，微量元素特征表现为平坦的稀土元素模式，与典型的LWS稀土模式一致。因此，CZO的稀土元素含量的MSIs包括在石榴石可能继承了前LWS分解反应发生隔离从矩阵。LWS分解和CZO形成反应伴随着等温减压阶段的流体释放，这意味着流体不仅可以在俯冲过程中产生，而且可以在冷俯冲环境中的超高压岩石折返过程中产生。

项目成果

Prehnite-pumpellyite facies metabasites found from the Kurosegawa belt in Yatsushiro area, Kyushu, Japan

日本九州八代地区黑濑川带发现的葡萄石-半辉石相变碱岩

• 发表时间: 2012
• 期刊: Journal of Mineralogical and Petrological Sciences
• 影响因子: 0.7
• 作者: KAMIMURA;K.;HIRAJIMA;T. and FUJIMOTO;Y
• 通讯作者: Y

三波川帯高変成度泥質岩に認められた複数段階の流体活動

三波川带高度变质泥质岩中观察到的多阶段流体活动

• 发表时间: 2011
• 作者: Yasuomi Kiyota;Norio Yoshida;Fumio Hirata;吉野裕高，小玉英雄;吉田健太
• 通讯作者: 吉田健太

Conformity and precision of CO_2 densimetry in CO_2 inclusions : microthermometry versus Raman microspectroscopic densimetry

CO_2包裹体中CO_2密度测定的一致性和精度：显微测温法与拉曼显微光谱密度测定法

• 发表时间: 2012
• 期刊: Journal of Raman Spectroscopy
• 影响因子: 2.5
• 作者: Kobayashi;T.
• 通讯作者: T.

"Lawsonite pseudomorphs in UHP talc-garnet-chloritoid schist of Makbal Complex, northern Tien-Shan, Kyrgyzstan."

“吉尔吉斯斯坦天山北部 Makbal 杂岩的超高压滑石-石榴石-绿泥石片岩中的硬钠石假晶。”

• 发表时间: 2012
• 作者: Orozbaev;R.;Bakirov;A.;Yoshida;K.;Hirajima;T.;Sakiev;K.;Takasu;A. and Tagiri;A.
• 通讯作者: A.

Exsolution of garnet and clinopyroxene from higj-Al pyroxenes in Xugou peridotite

须沟橄榄岩高铝辉石中石榴石和单斜辉石的溶出

• 发表时间: 2012
• 期刊: E China. Journal of Petrology
• 作者: Spengler;D.;Obata;M.;Hirajima;T.;Ottolini;L.;Ohfuji;H.;Tamura;A. & Arai;S
• 通讯作者: S