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| 1 | 岩石圈主要各向异性矿物的CPO特征及其对岩石圈动力学研究的启示显示文摘地震波各向异性主要受岩石中矿物晶格优选方位(Crystallographic Preferred Orientation,CPO)的影响,橄榄石的CPO控制着上地幔的地震波各向异性。将岩石中矿物的CPO与全岩地震波各向异性相结合,可以解释在全球不同构造单元观测到的地震波各向异性,从而进行构造变形和动力学过程分析。文中在总结岩石圈主要各向异性矿物的CPO和各向异性特征的基础上,以青藏高原东南缘岩石圈地幔包体为例,对其显微组构和地震波各向异性进行研究,结果显示青藏高原东南缘岩石圈地幔的构造环境发生改变,岩石圈地幔无法解释观测到的剪切波分裂(SKS)地震波各向异性,需要考虑其他各向异性来源。由此可见,研究岩石圈地幔矿物的CPO对合理约束地球物理测量资料和分析岩石圈变形特征至关重要。 | 商咏梅 杨彧 杨晓松 | 2019 | 地震地质2019，41，3： | 0 |
| 2 | 大陆岩石圈流变与地震波速各向异性显示文摘岩石的流变决定了地球各时空尺度的变形,是理解大陆岩石圈构造演化的关键.岩石流变学的研究主要通过高温高压流变学实验和天然变形岩石的多尺度观测来实现,目前已经积累了大量的数据.本文总结了岩石圈不同深度主要造岩矿物,包括橄榄石、斜方辉石、单斜辉石、角闪石、斜长石、石英和云母的流变机制、组构类型以及地震学性质;介绍了岩石圈地幔橄榄岩、榴辉岩、基性麻粒岩、斜长角闪岩和长英质岩石的高温高压实验和天然变形观测进展,包括流变学强度和行为、地震波速和各向异性等;以青藏高原为例,讨论了岩石流变学研究在解译地震波速各向异性的定量化约束作用.将矿物变形组构与地震波各向异性相结合,有望在岩石圈流变学机制和结构的研究中取得重要突破. | 孙圣思 董云鹏 黎乙希 杨宜海 程超 惠博 张彬 臧儒韬 | 2024 | 中国科学:地球科学2024，54，1： | 0 |
| 3 | Rheology of continental lithosphere and seismic anisotropy显示文摘Rheology of rocks controls the deformation of the Earth at various space-time scales,which is crucial to understand the tectonic evolution of continental lithosphere.Researches of rock rheology are mainly conducted via high-pressure and hightemperature rheological experiments and multi-scale observations and measurements of naturally deformed rocks.At present,a large amount of data from such kinds of studies have been accumulated.This paper first provides an up-to-date comprehensive review of the rheological mechanisms,fabric types and seismic properties of the main rock-forming minerals at different depths of continental lithosphere,including olivine,orthopyroxene,clinopyroxene,amphibole,plagioclase,quartz and mica.Then,progress in high-pressure and high-temperature experiments and natural deformation observations is introduced,mainly regarding the rheological strength and behavior,seismic velocity and anisotropy of lithospheric mantle peridotite,eclogite,mafic granulite,amphibolite and felsic rocks.Finally,by taking the Tibetan Plateau as an example,the application of rock rheology for quantitative interpretation of seismic anisotropy data is discussed.The combination of mineral deformation fabrics and seismic anisotropy is expected to make an important breakthrough in understanding the rheological properties and structure of continental lithosphere. | Shengsi SUN Yunpeng DONG Yixi LI Yihai YANG Chao CHENG Bo HUI Bin ZHANG Rutao ZANG | 2024 | Science China Earth Sciences2024，67，1： | 0 |
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