Explosive microfractures induced by K-metasomatism
文献类型：期刊论文
| 作者 | Xu, XW; Cai, XP; Zhang, BL; Wang, J |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2004-07-01 |
| 卷号 | 23期号:3页码:307-319 |
| 关键词 | explosive microfractures ultra-fine mineral aggregates K-metasomatism |
| ISSN号 | 1367-9120 |
| DOI | 10.1016/S1367-9120(03)00135-4 |
| 文献子类 | Article |
| 英文摘要 | Ultra-fine mineral aggregates in K-metasomatic rocks of the Hougou area, northwestern Hebei Province, China contain peculiar and distinct intergranular and intragranular geometries, compositions, and textures. These features indicate solidification of expanded and enclosed relict fluids within tensile microfractures. Two basic morphologic types of textures are present: saw-toothed and wheel-shaped, and several composite patterns also are present, such as X-shaped, grid, and network. The appearance of these features indicate explosion from an instantaneous force. These microscopic explosive microfractures are directly related to the enclosed relict fluids. Theoretical estimates show that volume expansion induced by mineral replacements during K-metasomatism may have caused the K-metasomatic fluids to be confined and strongly compressed in order to build up powerful forces that produced the ultra-fine mineral aggregates and explosive microfractures. The thick-walled texture of K-metasomatic rocks confined fractures that propagated only in the replaced rocks with the lowest strength. Both pumping pressures and the propagation of the K-metasomatism were self-governed and controlled by introduced chemical elements, specially K+. (C) 2003 Elsevier Ltd. All rights reserved. |
| WOS关键词 | REGIONAL METAMORPHISM ; PROPAGATION ; CRACK ; DEFORMATION ; MECHANICS ; TRANSPORT ; FELDSPAR ; PROVINCE ; VAPOR |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000221985800001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/79509]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Xu, XW |
| 作者单位 | CAS, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, XW,Cai, XP,Zhang, BL,et al. Explosive microfractures induced by K-metasomatism[J]. JOURNAL OF ASIAN EARTH SCIENCES,2004,23(3):307-319. |
| APA | Xu, XW,Cai, XP,Zhang, BL,&Wang, J.(2004).Explosive microfractures induced by K-metasomatism.JOURNAL OF ASIAN EARTH SCIENCES,23(3),307-319. |
| MLA | Xu, XW,et al."Explosive microfractures induced by K-metasomatism".JOURNAL OF ASIAN EARTH SCIENCES 23.3(2004):307-319. |
入库方式： OAI收割
来源：地质与地球物理研究所
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