Results 251 to 260 of about 209,030 (281)
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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 ...
Wallace S. Broecker, Arnold Bainbridge
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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 ...
Wallace S. Broecker, Arnold Bainbridge
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Petroleum Geoscience, 2003
In deltaic and turbiditic deposits along passive margins, such as the Lower Congo basin on the West African margin, the main deformation is not induced by a regional tectonic stress field but by the increase of the sedimentary load leading to gravitational instabilities.
I. Moretti +4 more
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In deltaic and turbiditic deposits along passive margins, such as the Lower Congo basin on the West African margin, the main deformation is not induced by a regional tectonic stress field but by the increase of the sedimentary load leading to gravitational instabilities.
I. Moretti +4 more
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Earth-Science Reviews, 2017
Strain in the lithosphere localizes into tabular zones known as shear zones that grow from small outcrop-size individual zones to large composite structures. Nucleation is related to distributed microscale flaws or mesoscale structures such as fractures and dikes, and they soon establish displacement profiles similar to faults.
Haakon Fossen +1 more
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Strain in the lithosphere localizes into tabular zones known as shear zones that grow from small outcrop-size individual zones to large composite structures. Nucleation is related to distributed microscale flaws or mesoscale structures such as fractures and dikes, and they soon establish displacement profiles similar to faults.
Haakon Fossen +1 more
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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, J. Ingles, P. Debat
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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, J. Ingles, P. Debat
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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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Journal of Structural Geology, 2005
Folds in ductile shear zones are common structures that have a variety of origins. These can be pre-existing folds that become modified or folds developed during the shearing event. Among the syn-shearing folds, a second subdivision is based on the relative age of the folded surface, which can be pre-existing or newly formed during the shearing event ...
Jordi Carreras +2 more
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Folds in ductile shear zones are common structures that have a variety of origins. These can be pre-existing folds that become modified or folds developed during the shearing event. Among the syn-shearing folds, a second subdivision is based on the relative age of the folded surface, which can be pre-existing or newly formed during the shearing event ...
Jordi Carreras +2 more
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Restraining bends in high temperature shear zones: The “Central Cameroon Shear Zone”, Central Africa
Journal of African Earth Sciences, 2008Abstract A detailed structural study of the Central Cameroon Shear Zone (CCSZ) segment, in the Bamoun plateau (BP) and the Tikar plain (TP) (West Cameroon), reveals a complex strain geometry of this shear zone. It shows thick mylonite bands wrapping around lenses of various country rock types, at small, medium and large scales. The mylonite foliation
Njonfang, E. +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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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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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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