Crystallographic and shape preferred orientation producing anisotropy in slates from Northern Spain
Crystallographic and shape preferred orientation producing anisotropy in slates from Northern Spain
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西班牙北部板岩的晶体学和形状择优取向产生各向异性
DOI:
10.1016/j.jsg.2022.104730
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发表时间:
2022
影响因子:
3.1
通讯作者:
Barrios-Sánchez, S.
中科院分区:
文献类型:
--
作者:
Wenk, H.-R.;Huang, J.;Devoe, M.;Gómez-Barreiro, J.;Vasin, R.;Ren, Y.;Barrios-Sánchez, S.
Slates are common metasedimentary rocks in the Iberian Peninsula, ranging in deposition age from Proterozoic to Ordovician. Spain is currently the primary producer of high-quality slate products. The excellent cleavage is related to microstructures with very strong preferred orientation of white mica and chlorite. In this study we explore preferred orientation of eleven slates and one phyllite of different composition and metamorphic grade from Northern Spain with high energy synchrotron X-ray diffraction and study microstructures with scanning electron microscopy. While phyllosilicates display high crystallographic and shape preferred orientation, quartz, with also highly flattened grains, has in most samples a random crystallographic orientation. The microstructural and texture data are used to model anisotropic seismic properties with a self-consistent method and to explore the influence of crystal shapes on elastic anisotropy. Anisotropy for these slates is very high compared with gneiss and shale and, due to its prevalence, slate anisotropy contributes significantly to seismic anisotropy in the upper crust.
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DOI:
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发表时间:
1998
期刊:
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影响因子:
--
作者:
H.-R. WENK;T. S MATTHIES;J. Donovan;.. Chateigner-Chateigner-2289170315
通讯作者:
H.-R. WENK;T. S MATTHIES;J. Donovan;.. Chateigner-Chateigner-2289170315
DOI:
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发表时间:
2005
期刊:
影响因子:
--
作者:
Holdsworth;R. E.;Jefferies;S. P.;Wibberley;C. A. 」. and Shimamoto. T.
通讯作者:
C. A. 」. and Shimamoto. T.
影响因子:
1.5
作者:
V. Suchý;I. Sýkorová;K. Melka;J. Filip;V. Machovič
通讯作者:
V. Machovič
影响因子:
2.7
作者:
J. Cosgrove
通讯作者:
J. Cosgrove
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
J. Acevedo;G. Fernández‐Viejo;S. Llana;C. López;J. Olona
通讯作者:
J. Olona