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DOI | 10.1029/2021GL097000 |
Microseismicity indicates atypical small-scale plate rotation at the Quebrada transform fault system, East Pacific Rise | |
Jianhua Gong; Wenyuan Fan; Ross Parnell-Turner | |
2022-01-18 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2022 |
英文摘要 | Closely-spaced, multi-strand ridge transform faults (RTFs) accommodate relative motions along fast spreading mid-ocean ridges. However, the relations between RTFs and plate spreading dynamics are poorly understood. The Quebrada system is one of the most unique RTF systems at the East Pacific Rise, consisting of four transform faults connected by three short intra-transform spreading centers (ITSCs). We use seven-months of ocean bottom seismograph data to study the Quebrada system, and find abundant earthquakes unevenly distributed among three active faults. We identify two deep, diffuse seismicity clouds at the inside corners of the ITSC-transform fault intersections, and one seismically-active fracture zone. The observations suggest a complex regional plate-motion pattern, including possible heterogeneous rotations within the Quebrada system. Evolution of multi-strand RTFs may have resulted from a strong three-dimensional local thermal and fluid effects, while the RTFs may have also regulated regional tectonics, forming an intricate feedback system. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/346151 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Jianhua Gong,Wenyuan Fan,Ross Parnell-Turner. Microseismicity indicates atypical small-scale plate rotation at the Quebrada transform fault system, East Pacific Rise[J]. Geophysical Research Letters,2022. |
APA | Jianhua Gong,Wenyuan Fan,&Ross Parnell-Turner.(2022).Microseismicity indicates atypical small-scale plate rotation at the Quebrada transform fault system, East Pacific Rise.Geophysical Research Letters. |
MLA | Jianhua Gong,et al."Microseismicity indicates atypical small-scale plate rotation at the Quebrada transform fault system, East Pacific Rise".Geophysical Research Letters (2022). |
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