Talc-bearing serpentinized peridotites from the southern Mariana forearc:implications for aseismic character within subduction zones
文献类型：CNKI期刊论文
| 作者 | Wang XM(汪小妹); Ceng ZG(曾志刚) ; Liu ZH(刘长华); Chen JB(陈俊兵); Yin XB(殷学博); Wang XY(王晓媛); Chen DG(陈代庚); Zhang GL(张国良); Chen S(陈帅); Li K(李康)
|
| 发表日期 | 2009-08-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | talc serpentinized peridotites Mariana aseismic subduction zone |
| 英文摘要 | The serpentinized peridotites overlying the subducted zones in the Izu-Bonin-Mariana(IBM) arc system have been interpret as the cause of the low-velocity layer identified beneath the IBM froearc,in turn few earthquakes occurred along the plate boundary.Chrysotile,which is a low temperature and highly hydrated phase of serpentine with low frictional strength,has been suggested as the low velocity material in the serpentinized peridotites,besides,brucite is inferred to be likely conducive to stable sliding.However,such idea encounters challenging in our serpentinized peridotites from the southern Mariana forearc,which absent both the above minerals.The presence of talc,which characterized by its weak,low-friction and inherently stable sliding behavior,provides new clue.Here we report the occurrence of talc in serpentinized peridotites collected from the landward trench slope of the southern Mariana forearc.We infer that talc is mainly forming as a result of the reaction of serpentine minerals with silica-saturated fluids released from the subducting slab,and talc also occurs as talc veins sometimes.Due to its unique physical properties,talc may therefore play a significant role in aseismic slip in the IBM subduction zone. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the Pilot Project of Knowledge Innovation Project,Chinese Academy of Sciences (No KZCX2-YW-211,KZCX3-SW-223) ; the National Natural Science Foundation of China (No 40830849) ; the Special Foundation for the Eleventh Five Plan of COMRA (No DYXM-115-02-1-03) |
| 卷 | v.27期:03页:249-255 |
| 语种 | 英文; |
| 分类号 | P736 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/192494]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.GraduateSchoolofChineseAcademyofSciences 2.KeyLaboratoryofMarineGeologyandEnvironment,InstituteofOceanology,ChineseAcademyofSciences 3.GeologicalBrigadeofHydrogeologyandEngineeringGeology,ZhejiangGeologicalProspectingBureau |
| 推荐引用方式 GB/T 7714 | Wang XM,Ceng ZG,Liu ZH,et al. Talc-bearing serpentinized peridotites from the southern Mariana forearc:implications for aseismic character within subduction zones. 2009. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。