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Showing 1 to 20 of 61 for “"Lineament"”.
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The evolution of the Baie Verte Lineament, Burlington Peninsula, Newfoundland
… well-exposed central part of the Baie Verte Lineament, has been mapped in detail. Two major rock divisions are recognised by their differing structural and metamorphic histories. A terrain of psammitic, semipelitic and mafic schists borders the western side of the Lineament. These rocks (part …
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Comparative Lineament and Geomorphic Analysis of Chaotic Terrains and Noctis Labyrinthus, Mars
… topographic highs are bounded by low troughs. Lineaments, topography, and geomorphology of NL and chaotic terrains were analyzed to determine tectonics and fluid influence in the formation and evolution of both sites. NL shows preferential fracture patterns associated with regional extension. …
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Structural analysis of the valley and ridge extension of the Parsons Lineament
The Parsons Lineament (a major Appalachian Cross-strike Structural Discontinuity, CSD) extends from the Plateau of West Virginia into the Valley and Ridge Province in northern Rockingham County, Virginia. Regional and second—order folds change in strike from typical Central Appalachian trends …
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The New York-Alabama Magnetic Lineament: its reflection character and relationship to the Grenville front
The source of the New York - Alabama Magnetic Lineament (NY AML) is revealed on newly reprocessed seismic reflection data, and the Grenville Front Tectonic Zone (GFTZ) is imaged beneath it in eastern Tennessee. Industry data, correlated to lower crustal depths, image a wedge-shaped block beneath …
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Magnetic model studies of the New York--Alabama Lineament and other magnetic anomalies in West Virginia
… models of the New York Alabama magnetic lineament indicate that the maximum depth to the center of the source object could be approximately 20 kilometers and have dips anywhere between 32'NW to 27'SE. The models could not differentiate between suture zone (dipping) and transform zone …
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The interpretation and characterisation of lineaments identified from Landsat TM imagery of SW England
… in order to examine the effect of resolution on lineament interpretation. Images were viewed at several different scales as a result of varying image resolution whilst maintaining a fixed screen pixel size. Lineament analysis at each scale utilised GIS techniques and involved several stages: …
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Lineament and pegmatite mapping using landsat TM imagery and aerial photograph data: Kaseba-Katota Area, Serenje district, Central Zambia
… of the Kaseba - Katota area consists of geology, lineaments, faults (interpreted from Landsat Thematic Mapper (TM) image and aerial photographs), joints and foliation traces (mapped in the field). Remote sensing techniques. Geographic Information Systems (GIS) as well as statistical analyses …
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The geology of the area east of Pofadder with emphasis on shearing associated with the Pofadder lineament, North West Cape
To the east of Pofadder in Bushmanland, N.W. Cape, an area of some 3600 km² has been geologically mapped. Emphasis has been placed on the role of shearing in the deformation history of the area. The study area occurs within the Namaqualand Metamorphic Complex and consists of gneisses, schists and …
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Test of a method for recognizing unmapped seismogenic faults.
Using the seismo-lineament analysis method developed by Cronin (Gammill and others, 2004), I have attempted to locate Holocene faults in the Point Dume 7.5 minute quadrangle of the central Santa Monica Mountains, southern California. I projected the nodal planes from each of eight focal-mechanism …
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Tectonic evolution of the Waldau Ridge structure and the Okahandja Lineament in part of the Central Damara Orogen, west of Okahandja, South West Africa
… the Waldau Ridge structure and the OkahCl.ndja Lineament is interpreted in terms of gravity-initiated deformatiort due to vertical· uplift of the Abbabis Swell relative to the Khomas Trough along the Okahandja Lineament. Compressive forces from the south brought about deformation of the rocks …
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Dynamic topography of the western Great Plains : geomorphic and 40Ar/39Ar evidence for mantle-driven uplift associated with the Jemez lineament, New Mexico and SE Colorado
… erosion and late Cenozoic volcanism of the Jemez lineament have produced distinctive modern landscapes characterized by deep bedrock canyons and inverted, basalt-capped mesas. 40Ar/39Ar ages are used to define an episodic eruption history in the Raton-Clayton volcanic field and to quantify …
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Structural and metamorphic evolution of an area around Kakamas and Keimoes, Cape Province, South Africa
… Zone, the Duivelsnek Shear Zone, the Neusspruit Lineament, the Braamfontein Shear Zone and the Cnydas Shear Zone. Three folding phases were recognised, the first of which (D ) resulted in the formation of the main penetrative foliation and isocl~ril1 folds. Some large D 1 struct4res are …
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Linear Trend Analysis: Implications for a Structural Fracture System and Applications of Subsurface Fluid Migration, Northwest Arkansas and Eastern Oklahoma
<p>Lineaments are mappable, simple or composite linear or curvilinear features of the Earth’s surface longer than one mile, which differ from the patterns of adjacent features and are presumed to reflect subsurface phenomenon such as faults and fractures. The usage of the term refers to the …
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The architecture, growth and tectono-stratigraphic significance of rift-oblique lineaments on the NE Atlantic Margin
… seismometer datasets, a series of rift-oblique lineaments (loosely referred to as ‘transfer zones’) have been identified which are commonly inferred to compartmentalise and laterally offset structural highs and depocentres developed within the Mesozoic – Cenozoic rift basins. A range of …
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Geology and structure of the Serra Do Mar in eastern São Paulo, Brazil
… and its extension are the only easterly trending lineaments in the area, cutting across the regional northeasterly structural trends.</p><p>The Taxaquara fault can be extended eastward across the study area, to the coast, to join with the “42.5° fracture zone” (Francheteau and Le Pichon, 1972) in …
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Borders and Bandaids
… of the walls and geopolitical lines—or lineaments. It is therefore crucial to comprehend the concept of lineaments on every scale, as it is the base idea that permeates all design. It is design in its purest form. The following architectural argument will explore Leon Battista Albert's …
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The petrogenesis and geochemistry of the Namaqualand olivine melilitite pipe cluster, western South Africa
… Namaqualand-Bushmanland-Warmbad (NBW) lineament, representing a 400 km long NNE-SSW trending feature made of hundreds of diatremes containing ultramafic lamprophyre and kimberlite in addition to the rock types named above. The NBW lineament appears to be an ageprogressive feature, with …
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Fracture-enhanced porosity and permeability trends in the Bakken Formation, Williston Basin, western North Dakota
… related to fracturing. </p><p> In theory, lineaments mapped on the surface reflect the geometry of basement blocks and the zones of fracturing propagated upward from them. Fracturing in the Williston Basin is thought to have occurred along reactivated basement-block boundaries in response …
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