Results 201 to 210 of about 309,304 (235)
Numerical simulation of gas explosion law and determination of safe thickness of blocking wall after auxiliary tunnel blocking. [PDF]
Sci RepHu H, Zhang B, Zhang X, Zhu Y, Luo L.
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Géotechnique, 2008
The behaviour of landslides in clay is essentially governed by a shear zone located at the base of the soil mass. While some data regarding the shear zones of slides are available, information is rather poor about the shear zones of mudslides. The paper reports some results of investigations on the shear zone located at the base of a mudslide, showing
COMEGNA, Luca, PICARELLI, Luciano
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The behaviour of landslides in clay is essentially governed by a shear zone located at the base of the soil mass. While some data regarding the shear zones of slides are available, information is rather poor about the shear zones of mudslides. The paper reports some results of investigations on the shear zone located at the base of a mudslide, showing
COMEGNA, Luca, PICARELLI, Luciano
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Journal of Geophysical Research: Oceans, 1978
At Geochemical Ocean Sections Study station 28, in the basin east of the Newfoundland Ridge, dramatic evidence for the ‘underthrusting’ of the benthic boundary layer was encountered. Results from the continuous temperature, salinity, and nephel measurements and from discrete water samples are presented in order to document that strong shearing within ...
Arnold E. Bainbridge +1 more
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At Geochemical Ocean Sections Study station 28, in the basin east of the Newfoundland Ridge, dramatic evidence for the ‘underthrusting’ of the benthic boundary layer was encountered. Results from the continuous temperature, salinity, and nephel measurements and from discrete water samples are presented in order to document that strong shearing within ...
Arnold E. Bainbridge +1 more
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Laminar flow in shear zones: the Pernambuco Shear Zone, NE-Brazil
Journal of Structural Geology, 1995Abstract The Pernambuco Shear Zone (PSZ) is a 700 km long branch of one of the largest and best-exposed Precambrian strike-slip shear zone systems in the world. The shear zones are part of the eroded record of a large-scale collision zone. Foliation and lineation orientations along the shear zone indicate that local deformation perturbations have ...
Helton H.F. Torres +4 more
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Deformation in a complex crustal-scale shear zone: Errabiddy Shear Zone, Western Australia
Geological Society, London, Special Publications, 2004Abstract Detailed mapping of four areas representing different geological units with varying formation histories within the crustal-scale Errabiddy Shear Zone shows an apparently simple temporal progression from foliation and mineral lineation development to folding and then to brittle deformation across the shear zone. However, in detail the
Occhipinti, Sandra, Reddy, Steven
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Porosity network of a ductile shear zone
Journal of Structural Geology, 1995Abstract The permeability of ductile shear zones is assumed to be significantly higher than that of surrounding undeformed rocks, although lower than that of fracture systems. This assumption, which results indirectly from geochemical mass balance calculations, is checked in this paper by the tomography of the porosity network in a metre-wide ...
Géraud, Yves +2 more
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Formation and maintenance of shear zones
Geology, 2006The processes that initiate and maintain prograde ductile shear zones are not well understood. We have performed shear experiments (γ = 1 to 3) on a fine-grained (100– 150 μm) gneiss (59% quartz, 28% plagioclase, 13% aligned but not interconnected biotite) to determine the evolution of deformation mechanisms that produce dramatic strain weakening and ...
Caleb W. Holyoke, Jan Tullis
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The South Armorican Shear Zone
Journal of Structural Geology, 1980Abstract The main lithological features and structural relations of the South Armorican Shear Zone (S.A.S.Z.) are described and the evolution of physical conditions during deformation is outlined. Age constraints on the timing of shearing deformation are discussed and an attempt is made to place the S.A.S.Z. in its regional geodynamic context.
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Ductile Shearing in Attur Shear Zone and its Relation with Moyar Shear Zone, South India
Gondwana Research, 2000Abstract In the eastern part of southern Peninsular India, the charnockitic hills of the Madras block are cut across by the E-W trending Attur shear zone (ASZ) which is characterised by a thick (1 to 1.5 km) phyllonite zone, showing intense mylonitisation due to ductile shearing.
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Tectonophysics, 1991
Abstract The geometric character of conjugate ductile shear zones has been defined from the structures developed in a undeformed granitoid corresponding to an homogeneous and isotropic material. In the plane perpendicular to the intersection line of conjugate zones (plane σ 1 σ 3 ) one notes that: (1) the principal direction of finite shortening ...
C. Lamouroux +2 more
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Abstract The geometric character of conjugate ductile shear zones has been defined from the structures developed in a undeformed granitoid corresponding to an homogeneous and isotropic material. In the plane perpendicular to the intersection line of conjugate zones (plane σ 1 σ 3 ) one notes that: (1) the principal direction of finite shortening ...
C. Lamouroux +2 more
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