Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 33 for “"Lineation"”.
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Shear zones of the Maud Belt, Antarctica : kinetics and deformation mechanisms
… Both study areas contain well developed lineations, defined by elongated quartz grains and in places hornblende and epidote, and a S₁+₂ foliation defined by biotite. The foliation is related to the shear zones in the region which are commonly sub-horizontal but locally sub-vertical in …
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Tectonic Transport Directions and Timing of Metamorphism in the southern part of the Northern Highlands Terrane, Scotland
… the macroscopic foliation and mineral stretching lineation present in each sample. In the Flat Belt the D2 lineation plunges gently to the SSE, but in the Steep Belt the composite D2-D3 lineation plunges more steeply (to almost vertical) towards the SE/SSE on the SE dipping foliation. Quartz …
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The origin of recumbent fold nappes: The Lochalsh fold as the main example
… a non-cylindrical fold with a marked extension lineation parallel to the fold axis. It is thought that this extension lineation results from restriction to the lateral propagation of the fold and thrust. There is an average of 40% extension parallel to the fold axis of the Skarvemellen Anticline …
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Strain path partitioning during forceful emplacement of the Papoose Flat pluton, Inyo Mountains, CA
… boudinaged marbles is parallel to a stretching lineation which is well developed throughout the deformed western margin of the pluton, and is associated with the simple shear deformation observed in the quartz tectonites. Both pure shear and simple shear deformation are believed to be occurring …
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Kinematics and timing of the Pinto shear zone, New York Mountains, northeastern Mojave Desert, California
… S-SW shearing, parallel to a S-SW plunging lineation, suggesting the Pinto shear zone is a normal fault. Hanging-wall deformation is accommodated by antithetic high-angle faulting localized along porphyry dike margins. Deformation fabric within the shear zone grades structurally upwards from …
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Structure and geochronological constraints on the ductile deformation observed along the Gaoligong Shan and Chong Shan Shear Zones, Yunnan (China)
… foliation and a sub-horizontal stretching lineation. Preliminary U/Pb results indicate that the ductile dextral shearing terminated by -18 Ma. Our regional map compilations indicate that the GSSZ and its proposed conjugate, the ASSZ, likely terminate within the Bangong Co-Nujiang suture …
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Microstructure and Macrostructure in Isaiah 28–35
… and provide the greatest explanatory power for lineation and verse structure. After an exhaustive microstructural analysis, each chapter continues by examining poetic macrostructure according to the methods of Pieter van der Lugt and Ernst Wendland. These methods fruitfully captured repetitions …
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Lacustrine Deltaic Deposits of the Sandstone Tongue of the Wasatch Formation, Fossil Basin, Wyoming
… cross bedding, trough cross bedding, and parting lineation indicate north to northeast paleocurrents.</p> <p>A gastropodal limestone varying in thickness from 30 cm to one meter separates the siliciclastic sequences in outcrops over nearly the entire area. This limestone is interpreted as …
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a people blessed, a land teeming
… It addresses the use of the poetic tools of lineation, white space, epigraphs, and the unique visual/textual intersection of poetry in constructing a cohesive collection. Inspiration for a variety of creative decisions sprang from the works of Julianna Baggott, Jan Beatty, Cathy Smith Bowers, …
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Polyphase deformation and metamorphism in the Penobscot Bay Area, Coastal Maine
… and a strong, hinge-parallel mineral elongation lineation under upper greenschist to lower amphibolite conditions. D₃ ductile strike-slip shear zones formed under upper greenschist to lower amphibolite conditions, and D₄ open, steeply-reclined folds formed under greenschist facies conditions. D₃ …
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A STRUCTURAL HISTORY OF THE GARNET STOCK AND ITS RELATIONSHIP TO DEFORMATION ALONG THE LEWIS AND CLARK LINE, WESTERN MONTANA
… contact aureole, creating a down-dip stretching lineation and layer-parallel boudins. Stratigraphic units thin to ~1/2 of their normal thickness within the aureole due to metamorphism as well as shear associated with stoping. Emplacement was followed by a second phase of transpression that began …
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A STRUCTURAL HISTORY OF THE GARNET STOCK AND ITS RELATIONSHIP TO DEFORMATION ALONG THE LEWIS AND CLARK LINE, WESTERN MONTANA
… contact aureole, creating a down-dip stretching lineation and layer-parallel boudins. Stratigraphic units thin to ~1/2 of their normal thickness within the aureole due to metamorphism as well as shear associated with stoping. Emplacement was followed by a second phase of transpression that began …
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The structural evolution of an ancient accretionary prism in the Damara Belt, Namibia
… foliation contains a down-dip stretching lineation L₂. Folding was contemporaneous With top-to-the-SE directed thrusting in D₂ faults and shear zones that are seen to displace D₁ fabric. Fold hinge lines parallel to L₂ suggest D₂ is characterised by non-ideal simple shear. D₃ is defined by …
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Hydrogeology and stream interactions of the Edwards Aquifer in the Salado Creek Basin, Bell and Williamson Counties, Central Texas.
… resulting in both diffuse and conduit flow. Lineations, observed on remote imagery, exhibit orientations related to regional structural trends. However, away from faulting, orientations become increasingly random. Lineation density increases near major faults zones, while the density away …
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Collisional Reactivation of Rift Margin Fracture Zones, Taiwan and the Taconic Allochthon
… Variation of Slaty Cleavage and Stretching Lineation Orientation in the Taconic Allochthon, Vermont and New York</strong></p> <p><strong><em>Abstract —</em></strong> New and previously collected structural data were compiled to produce detailed maps of slaty cleavage (S<sub>2</sub>) and …
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Structural and metamorphic evolution of the Ormsby Zone and relative timing of gold mineralization: a newly defined Archean orogenic gold prospect hosted on the Discovery Property, Yellowknife greenstone belt, Slave Province, Canada
… of folding are described, as well as a vertical lineation across the property. Gold mineralization occurred post-ductile fabric forming deformation, post-peak metamorphism, and syn-retrograde metamorphism. Although no visible evidence was observed mapping, metamorphic data present the possibility …
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XCT, SEM, and LA-ICP-MS map investigation of chondrule FGRS in CM2 Aguas Zarcas
… Chondrules in AZ exhibit a weak foliation and lineation fabric like that observed in the Murchison meteorite as the result of impact processing. No deformation significant enough to displace material across shear boundaries was observed in the sample. Many large FGRs exhibit S-rich banding …
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Scattering of acoustic energy from rough deep ocean seafloor: A numerical modeling approach
… acoustic data that is small relative to the lineation of the seafloor.
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Formation and Evolution of Valdivia Bank, Walvis Ridge, South Atlantic Ocean from Geophysical Data and International Ocean Discovery Program Expedition 391 Drilling Results
… reactivated faults and rotated magnetic lineation to the east of the edifice in the Paleocene. In the Eocene,thermal rejuvenation uplifted the edifice as a short-lived island and emplaced volcanoes along rift faults, promoting coral growth atop shallow pinnacles. As the plateau subsided …
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Seismic Velocity and Radial Anisotropy in the Crust and Upper Mantle of the South Central United States from Surface Wave Tomography
… southernmost anomaly aligns with a high-gravity lineation in the Gulf of Mexico and probably played an important role in opening the gulf during the Mesozoic.
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