A comparative study of natural and experimental nano-sized grinding grain textures in rocks

In three shallow-level fault systems in eastern China, nano-sized （30-100 nm） grinding grain textures are found in the thin-shelled theological layer representing frictional-viscous high strain field. The surface layer near slipping plane is composed of stacks of grinding grains with high sphericity...

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Bibliographic Details
Published in:Chinese science bulletin 2008-04, Vol.53 (8), p.1217-1221
Main Authors: Sun, Yan, Shu, LiangShu, Lu, XianCai, Liu, Hao, Zhang, XiHui, Kosaka, K., Lin, AiMing
Format: Article
Language:English
Subjects:
Chemistry/Food Science
Earth Sciences
Engineering
Humanities and Social Sciences
Life Sciences
multidisciplinary
Physics
Science
Science (multidisciplinary)
剪切薄板
摩擦粘性压力领域
研磨颗粒结构
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Summary:In three shallow-level fault systems in eastern China, nano-sized （30-100 nm） grinding grain textures are found in the thin-shelled theological layer representing frictional-viscous high strain field. The surface layer near slipping plane is composed of stacks of grinding grains with high sphericity and uniform nano-sized diameter, while the underlying layer appears as a mixture of irregular ones with diverse diameters. Rock deformation experiments indicate that the grinding grain texture is a common phenomenon in shearing fractures, suggesting a potential transition from sliding friction to rolling one during the rock deformation process. This transition is crucial for many tribological processes in geological fields.
ISSN:1001-6538
2095-9273
1861-9541
2095-9281
DOI:10.1007/s11434-008-0112-0