Fluid-rock interaction deduced from geological time bright-layer in the middle crust

中地壳地质时代亮层推导的流体-岩石相互作用

• 批准号: 19340152
• 负责人: TERABAYASHI Masaru
• 金额: $ 10.4万
• 依托单位: Kagawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19340152/
• 关键词: 流体; 地殻; 内陸地震; 変成岩; ブライトレイヤー; コア・コンプレックス

The geological time bright-layer was recognized in the low-P/T metamorphic rocks. We found that silicified rocks distribute as layers or lenticular bodies, and they are restricted in the greenscist facies conditions within structurally vertical thickness. Quartz veins crossing high-angles with schistosity were preferentially developed. The mode of occurrences of quartz veins indicates that silicified rocks are competent relative to underlying rocks. Rock boundary with high competence contrast is probably a good reflector of seismic waves. Seismic bright-layer reflections in the middle crust would be arisen from observed silicified rock layers in this study, if those are distributed in the deep crust to a considerable extent.

在低P/T变质岩中识别出地质时代的亮层。发现硅化岩呈层状或透镜状分布，并局限于绿片岩相条件下的构造垂向厚度。石英脉以高角度与石英质交叉的方式优先发育。石英脉的产出方式表明硅化岩相对于下伏岩石是有竞争力的。具有高对比度的岩石边界可能是地震波的良好反射体。如果硅化岩层在地壳深部有相当程度的分布，那么在本次研究中观测到的硅化岩层中，将产生中地壳地震明层反射。

项目成果

Early Paleozoic medium-pressure metamorphism in central Vietnam: evidence from SHRIMP U-Pb zircon ages

• DOI: 10.1007/s12303-009-0024-2
• 发表时间: 2009-10
• 期刊: Geosciences Journal
• 影响因子: 1.2
• 作者: T. Usuki;C. Lan;T. Yui;Y. Iizuka;T. Vu;T. Tran;K. Okamoto;J. Wooden;J. Liou

Metamorphic P-T-time history of the Sanbagawa belt in central Shikoku

四国中部三波川带变质作用P-T时间史

• 发表时间: 2009
• 期刊: Japan and implications for retrograde metamorphism during exhumation. Lithos 113(3-4)
• 作者: Aoki;K.;Kitajima;K.;Masago;H.;Nishizawa;M.;Terabayashi;M.;Omori;S.;Yokoyama;T.;Takahata;N.;Sano;Y.;Maruyama;S.
• 通讯作者: S.

Middle Archaean ocean ridge hydrothermal metamorphism and alteration recorded in the Cleaverville area, Pilbara Craton, Western Australia

西澳大利亚皮尔巴拉克拉通克利弗维尔地区记录的中太古宙洋脊热液变质和蚀变

• 发表时间: 2007
• 期刊: Journal of Metamorphic Geology 25(5)
• 作者: Shibuya;T.;Kitajima;K.;Komiya;T.;Terabayashi;M.;Maruyama;S.
• 通讯作者: S.

Neoproterozoic glaciation in the mid-oceanic realm: An example from hemi-pelagic mudstones on Llanddwyn Island, Anglesey, UK

• DOI: 10.1016/j.gr.2007.12.008
• 发表时间: 2008-08
• 期刊: Gondwana Research
• 影响因子: 6.1
• 作者: T. Kawai;B. Windley;M. Terabayashi;H. Yamamoto;Y. Isozaki;S. Maruyama

Simultaneous measurements of compressional wave and shear wave velocities, Poisson's ratio, Vp/Vs under deep crustal pressure and temperature conditions : Examples of silicified polycrystalline quartz sample from Ryoke belt

在深地壳压力和温度条件下同时测量压缩波和剪切波速度、泊松比、Vp/Vs：来自 Ryoke 带的硅化多晶石英样品示例

• 发表时间: 2010
• 期刊: Island Arc 19
• 作者: Matsumoto;Y.
• 通讯作者: Y.