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| DOI | 10.1016/j.epsl.2021.117000 |
| Mica kink-band geometry as an indicator of coseismic dynamic loading | |
| Anderson E.K.; Song W.J.; Johnson S.E.; Cruz-Uribe A.M. | |
| 发表日期 | 2021 |
| ISSN | 0012821X |
| 卷号 | 567 |
| 英文摘要 | Recognizing that exhumed shear zones had a seismogenic history is an important prerequisite for microstructural studies of energy partitioning in the earthquake source region. Using optical measurements of kinked micas along the Sandhill Corner shear zone, a seismogenic fault/shear zone exhumed from the base of the frictional-to-viscous transition, we demonstrate that their geometric properties are statistically different from kinks in micas that underwent regional deformation and metamorphism. Kink-band asymmetries and the angles of external rotation are larger in rocks from the Sandhill Corner shear zone, whereas kink-band widths are smaller. Our data show remarkable similarities to kink bands from dynamic deformation experiments, meteorite impacts, and nuclear explosion sites, suggesting a dynamic origin for their formation. Our results suggest that mica kink bands may be a useful indicator of dynamic loading and paleoseismicity in the rock record. © 2021 Elsevier B.V. |
| 关键词 | dynamic loadingearthquake sourcefrictional-to-viscous transitionkink bandmicapaleoseismicity |
| 英文关键词 | Dynamic loads; Earthquakes; Friction; Mica; Optical data processing; Dynamic loadings; Earthquake source; Energy partitioning; Frictional-to-viscous transition; Kink bands; Mica; Micro-structural; Paleoseismicity; Shear zone; Source region; Deformation; coseismic process; dynamic analysis; exhumation; geometry; kink band; mica; paleoseismicity; seismic source; shear zone; Indicator indicator |
| 语种 | 英语 |
| 来源期刊 | Earth and Planetary Science Letters
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/203019 |
| 作者单位 | School of Earth and Climate Sciences, University of Maine, Orono, ME 04469, United States |
| 推荐引用方式 GB/T 7714 | Anderson E.K.,Song W.J.,Johnson S.E.,et al. Mica kink-band geometry as an indicator of coseismic dynamic loading[J],2021,567. |
| APA | Anderson E.K.,Song W.J.,Johnson S.E.,&Cruz-Uribe A.M..(2021).Mica kink-band geometry as an indicator of coseismic dynamic loading.Earth and Planetary Science Letters,567. |
| MLA | Anderson E.K.,et al."Mica kink-band geometry as an indicator of coseismic dynamic loading".Earth and Planetary Science Letters 567(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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