Relevant bibliographies by topics / Structural Geophysics Geophysics

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Academic literature on the topic 'Structural Geophysics Geophysics'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Structural Geophysics Geophysics"

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Jessell, M. W., J. P. Cull, R. K. Valenta, A. Geiro, and G. Jung. "Structural Geophysics." Exploration Geophysics 24, no. 3-4 (September 1993): 599–602. http://dx.doi.org/10.1071/eg993599.

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Betts, Peter. "Structural geophysics: Geological principles applied to geophysical data Minerals keynote paper." ASEG Extended Abstracts 2015, no. 1 (December 2015): 1. http://dx.doi.org/10.1071/aseg2015ab112.

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Mutton, Andrew J. "The application of geophysics during evaluation of the Century zinc deposit." GEOPHYSICS 65, no. 6 (November 2000): 1946–60. http://dx.doi.org/10.1190/1.1444878.

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During the period 1990 to 1995, experimental programs using high‐resolution geophysics at several Australian operating mines and advanced evaluation projects were undertaken. The primary aim of those programs was to investigate the application of geophysical technology to improving the precision and economics of the ore evaluation and extraction processes. Geophysical methods used for this purpose include: 1) borehole geophysical logging to characterize ore and rock properties more accurately for improved correlations between drill holes, quantification of resource quality, and geotechnical information. 2) imaging techniques between drill holes to map structure directly or to locate geotechnical problems ahead of mining. 3) high‐resolution surface methods to map ore contacts and variations in ore quality, or for geotechnical requirements. In particular, the use of geophysics during evaluation of the Century zinc deposit in northern Australia demonstrated the potential value of these methods to the problems of defining the lateral and vertical extent of ore, quantitative density determination, prediction of structure between drill holes, and geotechnical characterization of the deposit. An analysis of the potential benefit of using a combination of borehole geophysical logging and imaging suggested that a more precise structural evaluation of the deposit could be achieved at a cost of several million dollars less than the conventional evaluation approach based on analysis from diamond drill‐hole logging and interpolation alone. The use of geophysics for the Century evaluation also provided substance to the possibility of using systematic geophysical logging of blast holes as an integral part of the ore extraction process. Preliminary tests indicate that ore boundaries can be determined to a resolution of several centimeters, and ore grade can be estimated directly to a usable accuracy. Applying this approach routinely to production blast holes would yield potential benefits of millions of dollars annually through improved timeliness and accuracy of ore boundary and quality data, decreased dilution, and improved mill performance. Although the indications of substantial benefits resulting from the appropriate and timely use of geophysics at Rio Tinto’s mining operations are positive, some challenges remain. These relate largely to the appropriate integration of the technology with the mining process, and acceptance by the mine operators of the economic value of such work. Until the benefits are demonstrated clearly over time, the use of geophysics as a routine component of evaluation and mining is likely to remain at a low level.
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Hauber, Ernst, Matthias Grott, and Peter Kronberg. "Martian rifts: Structural geology and geophysics." Earth and Planetary Science Letters 294, no. 3-4 (June 2010): 393–410. http://dx.doi.org/10.1016/j.epsl.2009.11.005.

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Luan, Pham Thanh, Le Huy Minh, Erdinc Oksum, and Do Duc Thanh. "Determination of maximum tilt angle from analytic signal amplitude of magnetic data by the curvature-based method." VIETNAM JOURNAL OF EARTH SCIENCES 40, no. 4 (September 18, 2018): 354–66. http://dx.doi.org/10.15625/0866-7187/40/4/13106.

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Imaging buried geological boundaries is one of a major objective during the interpretation of magnetic field data in Geophysics. Therefore, edge detection and edge enhancement techniques assist a crucial role on this aim. Most of the existing edge detector methods require to obtain special points such as in general the maxima of the resulting image. One of the useful tools in estimating edges from magnetic data is the tilt angle of the analytical signal amplitude due to its value slightly dependence on the direction of magnetization. In this study, the maxima of the tilt angle of analytical signal amplitudes of the magnetic data was determined by a curvature-based method. The technique is based on fitting a quadratic surface over a 3×3 windows of the grid for locating any appropriate critical point that is near the centre of the window. The algorithm is built in Matlab environment. The feasibility of the algorithm is demonstrated in two cases of synthetic data as well as on real magnetic data from Tu Chinh-Vung May area. The source code is available from the authors on request.ReferencesAkpınar Z., Gürsoy H., Tatar O., Büyüksaraç A., Koçbulut F., Piper, JDA., 2016. Geophysical analysis of fault geometry and volcanic activity in the Erzincan Basin, Central Turkey, Complex evolution of a mature pull-apart basin. Journal of Asian Earth Sciences, 116, 97-114. Beiki M., 2010. Analytic signals of gravity gradient tensor and their application to estimate source location, Geophysics, 75(6), 159-174.Blakely R. J., and Simpson R.W., 1986. Approximating edges of source bodies from magnetic or gravity anomalies, Geophysics, 51, 1494-1498.Chen An-Guo, Zhou Tao-Fa, Liu Dong-Jia, Zhang Shu, 2017. Application of an enhanced theta-based filter for potential field edge detection: a case study of the LUZONG ORE DISTRICT, Chinese Journal of Geophysics, 60(2), 203-218.Cooper G.RJ., 2014. Reducing the dependence of the analytic signal amplitude of aeromagnetic data on the source vector direction, Geophysics, 79, 55-60.Cordell L., 1979. Gravimetric Expression of Graben Faulting in Santa Fe Country and theEspanola Basin, New Mexico. In Ingersoll, R.V., Ed., Guidebook to Santa Fe Country, New Mexico Geological Society, Socorro, 59-64.Cordell L and Grauch V.J.S., 1985. Mapping Basement Magnetization Zones from Aeromagnetic Data in the San Juan Basin, New Mexico, The Utility of Regional Gravity and Magnetic Anomaly Maps, Society of Exploration Geophysicists, Tulsa, 181-197.Hsu S.K., Coppense D., Shyu C.T., 1996. High- resolution detection of geologic boundaries from potential field anomalies: An enhanced analytic signal technique, Geophysics, 61, 1947-1957.Le D.C., Application of seismic exploration methods to identify geological structural characteristics supporting for hydrocarbon potential assessment in TuChinh - Vung May basin, Ph.D. Thesis, Hanoi University of Mining and Geology.Li X., 2006. Understanding 3D analytic signal amplitude: Geophysics, 71(2), 13-16.Miller H.G. and Singh V., 1994. Potential Field Tilt a New Concept for Location of Potential Field Sources, Journal of Applied Geophysics, 32, 213-217.Nabighian M.N., 1972. The analytic signal of two-dimensional magnetic bodies with polygonal cross-section: Its properties and use of automated anomaly interpretation, Geophysics, 37, 507-517.Nguyen N.T., Bui V.N., Nguyen T.T.H., 2014. Determining the depth to the magnetic basement and fault systems in Tu Chinh - Vung May area by magnetic data interpretation, Journal of Marine Science and Technology, 14(4a), 16-25.Nguyen X.H, San T.N, Bae W., Hoang M.C, 2014. Formation mechanism and petroleum system of tertiary sedimentary basins, offshore Vietnam, Energy Sources, Part A, 36, 1634-1649.Phillips J.D., Hansen R.O. and Blakely R.J., 2007. The use of curvature in potential-field interpretation, Exploration Geophysics, 38(2), 111-119.Rao D.B., and Babu N.R., 1991. A rapid method for three-dimensional modeling of magnetic anomalies, Geophysics, 56(11), 1729-1737.Roest W.R., Verhoef J., and Pilkington M., 1992. Magnetic interpretation using the 3-D analytic signal, Geophysics, 57, 116-125.Tran N., 2017. Sediment geology of Vietnam, VNU Press.Tran T.D., Tran N., Nguyen T.H., Dinh X.T., Pham B.N., Nguyen T.T., Tran T.T.T.N., Nguyen T.H.T., 2018. The Miocenedepositional geological evolution of Phu Khanh, Nam Con Son and Tu Chinh - Vung May basins in Vietnam continental shelf, VNU Journal of Science: Earth and Environmental Sciences, 34(1), 112-135.Vo T.S., Le H.M., Luu V.H., 2005. Three-dimensional analytic signal method and its application in interpretation of aeromagnetic anomaly maps in the Tuan Giao region, Proceedings of the 4th geophysical scientific and technical conference of Vietnam, Publisher of Science and Engineering 2005.Wijns C, Perez C and Kowalczyk P, 2005, Theta map: Edge detection in magnetic data, Geophysics, 70, 39-43.
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Wang, Jun, Xiao Hong Meng, Fang Li, and Jun Jie Zhou. "Computer Application in Geosciences: Imaging of the Subsurface by Structural Coupled Inversion of Potential Field Data." Applied Mechanics and Materials 644-650 (September 2014): 2670–73. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.2670.

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With the continuing growth in influence of near surface geophysics, the research of the subsurface structure is of great significance. Geophysical imaging is one of the efficient computer tools that can be applied. This paper utilize the inversion of potential field data to do the subsurface imaging. Here, gravity data and magnetic data are inverted together with structural coupled inversion algorithm. The subspace (model space) is divided into a set of rectangular cells by an orthogonal 2D mesh and assume a constant property (density and magnetic susceptibility) value within each cell. The inversion matrix equation is solved as an unconstrained optimization problem with conjugate gradient method (CG). This imaging method is applied to synthetic data for typical models of gravity and magnetic anomalies and is tested on field data.
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Mueller, Hans J. "High-Pressure Deformation Techniques in Experimental Geophysics." Materials Science Forum 772 (November 2013): 45–49. http://dx.doi.org/10.4028/www.scientific.net/msf.772.45.

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Deformation processes have extrordinary importance for Geosciences. Mountainbuilding, i.e. orogenesis, slab subduction, continent-continent collision and penetration of the Earth’s mantle transition zone are examples of such processes. There is also a strong correlation between mineral content, phase transitions and structural properties of natural rocks. Ductile rock deformation is a typical property for Earth’s mantle conditions. Nevertheless most of experimental rock deformation was conducted under crustal conditions in the past. So, it was a revolutionary event when the first Deformation-DIA was introduced about a decade ago. Today this technique is indispensable not only for rock deformation under unextrapolated Earth’s mantle conditions but also for attenuation measurements in the seismic frequency range and attaining of lower mantle conditions in Large Volume Presses. In principle all these techniques require the installation of the high pressure device at a 3rd generation light source.
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Etgen, John, Samuel H. Gray, and Yu Zhang. "An overview of depth imaging in exploration geophysics." GEOPHYSICS 74, no. 6 (November 2009): WCA5—WCA17. http://dx.doi.org/10.1190/1.3223188.

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Prestack depth migration is the most glamorous step of seismic processing because it transforms mere data into an image, and that image is considered to be an accurate structural description of the earth. Thus, our expectations of its accuracy, robustness, and reliability are high. Amazingly, seismic migration usually delivers. The past few decades have seen migration move from its heuristic roots to mathematically sound techniques that, using relatively few assumptions, render accurate pictures of the interior of the earth. Interestingly, the earth and the subjects we want to image inside it are varied enough that, so far, no single migration technique has dominated practical application. All techniques continually improve and borrow from each other, so one technique may never dominate. Despite the progress in structural imaging, we have not reached the point where seismic images provide quantitatively accurate descriptions of rocks and fluids. Nor have we attained the goal of using migration as part of a purely computational process to determine subsurface velocity. In areas where images have the highest quality, we might be nearing those goals, collectively called inversion. Where data are more challenging, the goals seem elusive. We describe the progress made in depth migration to the present and the most significant barriers to attaining its inversion goals in the future. We also conjecture on progress likely to be made in the years ahead and on challenges that migration might not be able to meet.
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Kaftan, V. I., R. I. Krasnoperov, V. N. Tatarinov, and E. V. Vavilin. "Geoinformatics and systems analysis in geophysics and geodynamics." Физика Земли, no. 1 (March 27, 2019): 42–60. http://dx.doi.org/10.31857/s0002-33372019142-60.

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The paper is devoted to the application of geoinformatics and systems analysis methods for processing and interpretation of geospatial data in geophysics and geodynamics. The modern uses of observations with Global Navigational Satellite Systems as a main source of geospatial data are discussed. The advances in the interpretation of geomagnetic data are described and basic points of systems analysis are presented in this context. The systems analysis in geophysics and geodynamics is illustrated by the approaches to estimating and forecasting the stability of structural-tectonic blocks of the Earth’s crust aimed at geoecologically safe burial of high-level radioactive waste in the Nizhne-Kanskii granitoids massif (Krasnoyarsk krai).
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Aranda Gómez, Jorge, Vsevolod Yutsis, Edgar Juárez-Arriaga, Carlos Ortega-Obregón, Norma González-Cervantes, Gabriel Chávez-Cabello, César Francisco Ramírez-Peña, and David Ernesto Torres-Gaytán. "Reconnaissance geology and geophysics of the Mercurio structural dome, Chihuahua, Mexico." Revista Mexicana de Ciencias Geológicas 36, no. 3 (November 30, 2019): 357–77. http://dx.doi.org/10.22201/cgeo.20072902e.2019.3.1340.

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The Mercurio structural dome is a poorly exposed and complex structure located in the transitional region between the Coahuila Calcareous Platform and the San Pedro El Gallo sector of the Sierra Madre Oriental, Mexico. It is located in the State of Chihuahua, close to the limits with Coahuila and Durango, Mexico. The dome is a circular structure, ~16 km in diameter, that can be seen in air-photos, satellite images, and shaded relief maps, but that has a subtle topographic expression on the ground. As seen in the field, the most conspicuous topographic features in the area are several hills with the morphology of volcanic necks that rise up to 250 m above the surrounding terrain. The deformation fringe of the dome is a series of cuesta-like low hills, less than 30 m high, where a poorly lithified volcano-sedimentary succession (litharenites, polymictic conglomerates, and ignimbrites) is almost completely masked by desert pavement, which is mainly constituted by well-rounded calcareous clasts derived from the Mesozoic sedimentary marine rocks and by less abundant Paleogene volcanic rocks exposed in the region. Inside the dome the following units are exposed: 1) the pre-volcanic basement in a NW-trending, upright, open anticline developed in limestone of the Aurora Formation, 2) a series of hills where is exposed a succession of epiclastic and volcanic rocks, which are similar, in age and lithology, to some facies of the Ahuichila Formation, and 3) a NW-trending dike, exposed at Cerro Dinamita, which is interpreted as an offshoot of the buried subvolcanic body that created the dome. The deformation fringe around the buried intrusive has a quaquaversal array in the bedding and forms a simple monocline-like structure in the NE part of the dome. A set of SE- and NW-trending plunging folds forms the SE and SW portions of the dome, respectively. The NW part of the fringe is nearly completely masked by volcanic rocks, but there is a ~W plunging syncline in the area. Geophysical data show a broad gravimetric high in the region, and there is a distinct aeromagnetic anomaly inside the dome. The morphological expression of the dome lies just east of a NW-trending lineament of gravity and magnetic anomalies, which may be the buried portion of a normal fault shown in geologic maps of the region northwest of the studied area. Another possible cause is an alignment of buried intrusive bodies suggested by the regional aeromagnetic data, a small diorite outcrop south of Sierra El Diablo, and presence of volcanic necks in the northern portion of Sierra Los Alamos. Available geological and geophysical information was used to model a near-surface, irregular intrusive body with variable magnetic susceptibilites. This variation in susceptibilities is consistent with observed differences in rock composition in the exposed volcanic rocks and with evidence that the structure was formed by a bimodal (andesite-rhyolite) magmatic system where mixing/mingling occurred. As a whole, the set of structures is interpreted as a dome formed by forceful magma injection into a previously folded Paleogene volcano-sedimentary succession. U-Pb zircon ages were used to bracket the age of the deformation pulses registered in the rocks. Litharenites from the deformed volcano-sedimentary succession yielded an Ypresian zircon age of ~51 Ma. A tilted, lithic-rich ignimbrite collected near the top of the exposed volcano-sedimentary succession has mean age of 46.4 +0.8/-1.6 Ma, and the Cerro Dinamita dike has a mean age of 29.37 ± 0.24 Ma. Thus, the youngest pulse of Laramide deformation in the area is younger than ~46 Ma and the re-folding, associated with emplacement of the dome occurred at ~29 Ma. Detrital zircon U-Pb ages from Mercurio sandstones suggest dominant sediment sources from plutonic and/or volcanic rocks exposed along western Mexico. Likely subordinate sources are Mesozoic sedimentary rocks in northern and central Mexico. Distribution of detrital zircon U-Pb ages in the studied samples is similar to that documented in sandstones of the Difunta Group at the Parras and La Popa basins, except that older grains (>1.0 Ga), documented in the clastic rocks of these basins, are scarce in the sandstones of the Mercurio area.
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Dissertations / Theses on the topic "Structural Geophysics Geophysics"

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Seiler, Christina. "Structural and thermal evolution of the Gulf Extensional Province in Baja California, Mexico : implications for Neogene rifting and opening of the Gulf of California /." Connect to thesis, 2009. http://repository.unimelb.edu.au/10187/4212.

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Par, Andrew R. "DC Resistivity Inversion for Structural Information." Thesis, Colorado School of Mines, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10744014.

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The DC resistivity method has been an important tool for mineral exploration for the direct detection of conductive bodies with economic value. It has also been used for the structural mapping of lithology and alteration where boundaries are zones of economic interest and the detection of edges is the primary goal of surveying. Edge preserving inversion has been explored extensively within the context of potential field methods but has seen relatively little attention for the DC resistivity method. The focus of this thesis is to develop and implement methods which employ specific advantages of the DC method to aid the recovery of edges in the earth’s resistivity distribution.

I begin by utilizing sparse a priori geologic knowledge to create a geologic concept of pervasive blocky resistivity. l1 and l0 approximating measures of model values and model gradients are used as a vehicle to inject the a priori knowledge into a regularized inversion. An iterative method is used to solve for the model that minimizes a total objective function using these general measures.

A series of synthetic modelling and inversion scenarios demonstrate the effectiveness of l1 and minimum gradient support regularization to recover boundaries when compared to traditional sum-of-squares regularization. These blocky inversion schemes also exhibit an improved recovery of the resistivity value of distinct bodies. Additionally, I recognize that the various regularization types have different strengths and weaknesses. I exploit this property to create a new composite regularization that combines smooth model and blocky model regularization. This composite regularization exhibits the strengths of both regularization styles and less of the weaknesses.

A case study on field data from the Sabajo gold deposit was performed utilizing this methodology. Sharp lithologic contacts from drillholes informed the creation of a sharp resistivity concept. A blocky inversion was performed to recover a blocky model that was consistent with this concept and compared to the results of a smooth model inversion. Important differences were noted with their economic implications. I observed that the blocky regularized inversion may have recovered better estimates of the conductivity of features and this can greatly aid prioritization of targets for drilling. Finally, the differences between the inversions utilizing diverse regularization styles provided a proxy for model uncertainty.

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Shepley, Karen Anne Bernice. "Regional geophysical modelling and paleo-reconstruction in and around the southern Slave Structural Province." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0020/MQ57172.pdf.

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Sutton, Daniel Scott. "Structural and geophysical interpretation of Roatan Island, Honduras, Western Caribbean." Thesis, University of Louisiana at Lafayette, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10002482.

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Roatán Island is the largest of the Bay Islands of Honduras. These islands form an emergent crest off the Caribbean coast of Honduras called the Bonacca Ridge. The Bartlett Trough to the north and subsequent Bonacca Ridge were likely formed due to the transform fault system of the Motagua-Swan Islands Fault System. This fault system forms the tectonic plate boundary between the North American and Caribbean plates. Although the timing and kinematics are poorly constrained, the Bay Islands and the Bonacca Ridge were likely uplifted due to transpression along this left-lateral strike-slip system. With limited regional exposures along the adjacent tectonic boundary, this study aimed to present a structural interpretation for Roatán. This new interpretation is further explained through regional considerations for a suggested geologic history of the northwestern Caribbean.

In order to better constrain the kinematics of uplift and exhumation of Roatán Island, structural, gravity, and magnetic surveys were conducted. Principal attention was directed to the structural relationship between the geologic units and their relationship to one another through deformation. Resulting geologic cross-sections from this study present the metamorphic basement exposed throughout the island to be in a normal structural order consisting of biotite schist and gneiss, with overlying units of chlorite schist, carbonate, and conglomerate. These units have relatively concordant strike and dip measurements, consistent with resultant magnetic survey readings. Additionally, large and irregular bodies of amphibolite and serpentinite throughout the island are interpreted to have been emplaced as mafic and ultra-mafic intrusions in weakness zones along Early Paleogene transform system fault planes.

The interpretation and suggested geologic history from this study demonstrate the importance of transpressive tectonics both local to Roatán and regionally throughout geologic history. Consideration of this interpretation will help to further constrain regional studies over the northwestern Caribbean.

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Sussman, Aviva. "Thrust belt curvature: Structural and paleomagnetic analyses in the Catalunyan Pyrenees and Sevier orogen." Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/280086.

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The question of how curved geologic structures form, from arcuate faults to curvilinear orogenic belts, is one that transcends scale as well as rock properties. Many scale-independent lines of evidence suggest that material within fold-thrust belts is transported in three dimensions. Paleomagnetic analysis is the primary method for determining distribution and magnitude of vertical-axis rotations in arcuate regions. Thus paleomagnetic information is essential to deciphering the three-dimensional kinematic evolution of a curved orogen. In addition, most studies of foreland fold-and-thrust belts focus on geometries and timing relationships, but do not identify the deformations internal to the thrust-bounded rock packages. The Southern Pyrenean and Sevier orogenic systems both provide an outstanding opportunity to investigate thrust-belt curvature by integrating paleomagnetic and structural studies. This dissertation addresses the interplay between three-dimensional motions and the structures they cause. In the Pyrenees, the Oliana anticline is a foreland structure related to the South Central Salient, a major curve in the thrust belt. Paleomagnetic data from the Oliana anticline document counter clockwise rotations about a vertical axis. The average rotation is R ± Δ R = -19.6° ± 10.5°. Based on the stratigraphic horizons that record the rotation, as well as the structural evolution of the Oliana anticline, the age of rotation is ≥ 35 Ma. This rotation is attributed to continued motion along the Serres Marginals thrust, causing rotation along the blind thrusts that underlie the Oliana anticline. Mode I fracture data from this region highlights the progressive development of joints in growing structures. Measurements were taken from four regions around the anticline, and from four sequential synorogenic conglomerates. A consistent NW-SW orientation for the development of joints was determined by performing sequential restorations of the Oliana anticline and incrementally analyzing joint orientations. Reanalysis of previously published data from the Wyoming salient of the western United States demonstrates the relationship between irregular fault traces and the three-dimensional motions that caused them to form. Interaction between rotation, strain and net translation is a global phenomenon and suggests that geologic shortening estimates can be improved by incorporating the effects of tectonic rotations.
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Gillam, Daniel J. "Structural and geomechanical analysis of naturally fractured hydrocarbon provinces of the Bowen and Amadeus Basins: onshore Australia /." Title page, table of contents and abstract only, 2004. http://web4.library.adelaide.edu.au/theses/09PH/09phg4758.pdf.

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Meirita, Maria Fransisca. "Structural and depositional evolution, KH field, West Natuna Basin, offshore Indonesia." Texas A&M University, 2003. http://hdl.handle.net/1969/411.

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Motta, João Gabriel [UNESP]. "Gravimetria no estudo da extremidade sudeste da faixa de dobramentos Brasília." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/133957.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
A extremidade sudeste da Faixa de Dobramentos Brasília tem sido alvo de extensa discussão em vista de sua geometria complexa e a diversidade de interpretações postuladas ao longo do avanço do conhecimento, sem integração ou abordagem por modelagem até então. A geofísica é baseada em uma abordagem indireta à geometria das massas rochosas, imageando propriedades físicas das mesmas, sendo assim, a gravimetria representa uma alternativa para a observação das massas de rocha presentes na região e sua geometria. Nesta temática o presente trabalho apresenta resultados de análise e modelagem de dados gravimétricos neste segmento da crosta, mais especificamente a região da Nappe de Socorro-Guaxupé e arredores, entre os orógenos Brasília e Ribeira com o Cráton do São Francisco e sua zona de interferência estrutural. A filtragem e modelagem gravimétrica indicam uma geometria de crosta duplicada, onde o Cráton do São Francisco se apresenta como anteparo na colisão do bloco Paraná-Paranapanema e Vitória, durante o ciclo Brasiliano, com a formação de extensos sistemas de empurrão subsequentemente deformados por tectônica lateral ao término do evento orogênico, com a instalação dos Cinturões de Cisalhamento Paraíba do Sul e Campo do Meio, com assinaturas geofísicas marcantes. Aspectos geofísicos e petrológicos indicam a similaridade da região com áreas de alto grau metamórfico, agora com uma visão integrada de seus níveis inferiores de arquitetura com a confirmação de modelos anteriores com evidências de superfície.
The southern edge of Brasília Fold Belt has an extensive research past dealing with its complex geometry with several interpretations on its evolution, poorly constrained by geophysical modeling. Geophysics is a non-direct approach to crust geometry by means of its physical properties presenting a prospective way to observe crust geometry. This works follows this scenario for gravity modelling in the southern tip of Brasilia Fold belt, especially in the Socorro- Guaxupé Nappe area along the syntax and interference zone to the Ribeira Belt (Mantiqueira Orogen) by São Francisco Craton margin. Filtering and modeling of gravity data into 2D sections shows crust duplication along the nappe system with São Francisco Craton acting as a rigid- to subducting block during Neoproterozoic tectonics. Extensive fold and shear belts (Campo do Meio e Paraíba do Sul) formed in the area during late Neoproterozoic as the final acts of deformation during collision of Paranapanema and Vitória cratons/blocks with São Francisco craton. Geophysical, structural and petrology constraints shows that the nappe system pertains a high metamorphic grade lower crust slice with strong near- vertical shear zone imprint. This work proposes a geology- constrained gravity model along the structural interference zone for the main tectonic elements with information by seismology and magnetic data.
CNPq: 830839/1999-2
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Shackleton, John Ryan. "Numerical Modeling of Fracturing in Non-Cylindrical Folds: Case Studies in Fracture Prediction Using Structural Restoration." Amherst, Mass. : University of Massachusetts Amherst, 2009. http://scholarworks.umass.edu/open_access_dissertations/82/.

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Magyari-Köpe, Blanka. "Structural stability of solids from first principles theory." Doctoral thesis, KTH, Physics, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3366.

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Books on the topic "Structural Geophysics Geophysics"

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W, Coates Robert, ed. The lithosphere: Geochemistry, geology and geophysics. Hauppauge, N.Y: Nova Science Publishers, 2008.

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Jiansheng, Wu, and Chen Bing, eds. Zhujiang Kou pen di he Dong Hai lu jia pen di ji di jie gou de zong he di qiu wu li yan jiu. Shanghai: Tong ji da xue chu ban she, 1997.

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Langenheim, Victoria E. Geophysical framework based on analysis of aeromagnetic and gravity data, upper and middle Verde River watershed, Yavapai County, Arizona. Reston, Va: U.S. Geological Survey, 2005.

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Romashov, Aleksandr Nikolaevich. Planeta Zemli︠a︡: Tektonofizika i ėvoli︠u︡t︠s︡ii︠a︡. Moskva: URSS, 2003.

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White, Eric A. Surface-geophysical investigation of a formerly used defense site, Machiasport, Maine, February 2003. Reston, Va: U.S. Geological Survey, 2005.

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V, Nikolaev A. Problemy geofiziki XXI veka: Sbornik nauchnykh trudov : v dvukh knigakh. Moskva: "Nauka", 2003.

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Moscow, Russia) Vserossiĭskai︠a︡ konferent︠s︡ii︠a︡ "Tektonofizika i. aktualʹnye voprosy nauk o. Zemle K. 40-letii︠u︡ sozdanii︠a︡ Mikhail Vladimirovichem Gzovskim laboratorii tektonofiziki v. IFZ RAN" (2008. Tektonofizika i aktualʹnye voprosy nauk o Zemle: K 40-letii︠u︡ sozdanii︠a︡ M.V. Gzovskim laboratorii tektonofiziki v IFZ RAN : materialy dokladov Vserossiĭskoĭ konferent︠s︡ii, 13-17 okti︠a︡bri︠a︡ 2008 g., Institut fiziki Zemli RAN, g. Moskva. Moskva: IFZ RAN, 2009.

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Hunt, C. Warren. Expanding geospheres: Energy and mass transfers from earth's interior. Edited by Collins Lorence G. 1931- and Skobelin E. A. Calgary: Polar Publishing, 1992.

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Balakrishnan, T. S. Major tectonic elements of the Indian subcontinent and contiguous areas: A geophysical view. Bangalore: Geological Society of India, 1997.

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Yahya, Çiftçi, and Maden Tetkik ve Arama Enstitüsü (Turkey), eds. Structural discontinuities of Turkey: Geological and geophysical analysis (gravity and magnetic). Ankara: General Directorate of Mineral Research and Exploration, 2011.

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Book chapters on the topic "Structural Geophysics Geophysics"

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Vogel, A. "Geophysics in Structural Research on the Rhenish Massif." In The Rhenish Massif, 158–60. Wiesbaden: Vieweg+Teubner Verlag, 1987. http://dx.doi.org/10.1007/978-3-663-01886-5_15.

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Meneilly, A. W., S. M. Harrison, B. A. Piercy, and B. C. Storey. "Structural Evolution of the Magmatic Arc in Northern Palmer Land, Antarctic Peninsula." In Gondwana Six: Structure, Tectonics, and Geophysics, 209–19. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm040p0209.

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Spaeth, G. "Aspects of the Structural Evolution and Magmatism in Western New Schwabenland, Antarctica." In Gondwana Six: Structure, Tectonics, and Geophysics, 295–307. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm040p0295.

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Storey, B. C., and I. W. D. Dalziel. "Outline of the Structural and Tectonic History Of The Ellsworth Mountains-Thiel Mountains Ridge, West Antarctica." In Gondwana Six: Structure, Tectonics, and Geophysics, 117–28. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm040p0117.

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Willner, A. P., U. S. Lottner, and H. Miller. "Early Paleozoic Structural Development in the Nw Argentine Basement of The Andes and Its Implication for Geodynamic Reconstruction." In Gondwana Six: Structure, Tectonics, and Geophysics, 229–39. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm040p0229.

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Alef, W., E. Preuss, K. I. Kellermann, N. Whyborn, and P. N. Wilkinson. "Structural Variability in the Core of 3C147." In The Impact of VLBI on Astrophysics and Geophysics, 95–96. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2949-4_33.

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Kudoh, Yasuhiro, Eiji Ito, and Hiroshi Takeda. "High-pressure structural study on perovskite-type MgSiO3-a summary." In Perovskite: A Structure of Great Interest to Geophysics and Materials Science, 33–34. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm045p0033.

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Masters, Guy, and Michael Ritzwoller. "Low frequency seismology and three-dimensional structure — observational aspects." In Mathematical Geophysics, 1–30. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2857-2_1.

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Golani, Prakash R. "Geophysical Framework." In Assessment of Ore Deposit Settings, Structures and Proximity Indicator Minerals in Geological Exploration, 317–51. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65125-1_5.

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Artugyan, Laurențiu, Adrian C. Ardelean, and Petru Urdea. "GPR and ERT Investigations of Karst Structures at the Buhui-Cuptoare Cave System, Anina Karst Region (Banat Mountains, Romania)." In Springer Geophysics, 19–38. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-28909-6_2.

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Conference papers on the topic "Structural Geophysics Geophysics"

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Kiselev, S. "Step-By-Step Solutions Of Structural Geophysics Problem." In Eastern Mediterranean Workshop 2018. Netherlands: EAGE Publications BV, 2018. http://dx.doi.org/10.3997/2214-4609.201803033.

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Shapovalov, V. L., A. V. Morozov, A. A. Vasilchenko, M. V. Okost, and V. A. Yavna. "GPR Calibration for Determining the Electrophysical Properties of Soil Structural Layers." In Engineering and Mining Geophysics 2020. European Association of Geoscientists & Engineers, 2020. http://dx.doi.org/10.3997/2214-4609.202051118.

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Goryachev, I. N. "Structural Modeling of Teutedzhak Gold Ore Field (Magadan region, Russian North-East)." In Engineering and Mining Geophysics 2021. European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.202152128.

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Abaturova, I. V., L. A. Storozhenko, V. B. Pisetsky, and I. A. Savintsev. "Use of Geological and Structural Analysis in Evaluating Engineering and Geological Conditions of Mineral Deposits." In Engineering and Mining Geophysics 2020. European Association of Geoscientists & Engineers, 2020. http://dx.doi.org/10.3997/2214-4609.202051096.

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Hamdi Nasr, I., A. Amiri, M. H. Inoubli, K. Sebei, and H. Boussigua. "Overview of the Structural Pattern in Northern Tunisia Inferred Gravity Interpretation." In Second International Conference on Engineering Geophysics. Netherlands: EAGE Publications BV, 2013. http://dx.doi.org/10.3997/2214-4609.20131913.

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Auken, Esben, Hanne Madsen, Anders V. Christiansen, and Kurt Sørensen. "Structural Mapping of Large Aquifer Structures." In Symposium on the Application of Geophysics to Engineering and Environmental Problems 2006. Environment and Engineering Geophysical Society, 2006. http://dx.doi.org/10.4133/1.2923733.

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Yusha, A. M., S. B. Burlutskiy, A. A. Abramovich, V. V. Glazunov, and M. A. Lazdovskaya. "Study of Structural Features of Landslide Arrays Based on the Correlations of Seismic Characteristics of Clay Soils with Their Humidity." In Engineering and Mining Geophysics 2020. European Association of Geoscientists & Engineers, 2020. http://dx.doi.org/10.3997/2214-4609.202051075.

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Auken, Esben, Hanne Madsen, Anders V. Christiansen, and Kurt Sørensen. "STRUCTURAL MAPPING OF LARGE AQUIFER STRUCTURES." In 19th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems. European Association of Geoscientists & Engineers, 2006. http://dx.doi.org/10.3997/2214-4609-pdb.181.96.

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Taninkova, V. S., S. B. Burlutskiy, and V. V. Glazunov. "Features of the Formation of Stress Fields of Landslides of Various Structural Types Based on Materials of Computer Simulation and Geotomography." In Engineering and Mining Geophysics 2020. European Association of Geoscientists & Engineers, 2020. http://dx.doi.org/10.3997/2214-4609.202051076.

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Hashem, W., O. Abdelghany, A. El Saiy, A. Murad, S. Hussein, A. Gabr, H. Baker, and A. Aldahan. "Structural and Stratigraphic Parameters as Tools for the Geozoning Project of Al-Ain City, UAE." In Second International Conference on Engineering Geophysics. Netherlands: EAGE Publications BV, 2013. http://dx.doi.org/10.3997/2214-4609.20131905.

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Reports on the topic "Structural Geophysics Geophysics"

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Tschirhart, Lori. Geophysics and Seismology / Structural Geology and Neotectonics - University of Michigan. Purdue University Libraries, September 2012. http://dx.doi.org/10.5703/1288284315004.

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Fairbank, Brian D., and Nicole Smith. Crump Geyser Exploration and Drilling Project. High Precision Geophysics and Detailed Structural Exploration and Slim Well Drilling. Office of Scientific and Technical Information (OSTI), June 2015. http://dx.doi.org/10.2172/1184025.

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Simms, Janet, Benjamin Breland, and William Doll. Geophysical investigation to assess condition of grouted scour hole : Old River Control Complex—Low Sill Concordia Parish, Louisiana. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41863.

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Geophysical surveys, both land-based and water-borne, were conducted at the Old River Control Complex‒Low Sill, Concordia Parish, LA. The purpose of the surveys was to assess the condition of the grout within the scour region resulting from the 1973 flood event, including identification of potential voids within the grout. Information from the ground studies will also be used for calibration of subsequent marine geophysical data and used in stability analysis studies. The water-borne survey consisted of towed low frequency (16-80 MHz) ground penetrating radar (GPR), whereas the land-based surveys used electrical resistivity and seismic refraction. The GPR survey was conducted in the Old River Channel on the upstream side of the Low Sill structure. The high electrical conductivity of the water (~50 mS/m) precluded penetration of the GPR signal; thus, no useful data were obtained. The land-based surveys were performed on both northeast and southeast sides of the Low Sill structure. Both resistivity and seismic surveys identify a layered subsurface stratigraphy that corresponds, in general, with available borehole data and constructed geologic profiles. In addition, an anomalous area on the southeast side was identified that warrants future investigation and monitoring.
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Salisbury, M. H., N. I. Christensen, F. J. Vine, G. C. Smith, and S. Eleftheriou. Geophysical structure of the Troodos Ophiolite from downhole logging. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/127338.

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Wadman, Heidi, and Jesse McNinch. Spatial distribution and thickness of fine-grained sediment along the United States portion of the upper Niagara River, New York. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41666.

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Over 220 linear miles of geophysical data, including sidescan sonar and chirp sub-bottom profiles, were collected in 2016 and 2017 by the US Army Corps of Engineers and the US Fish and Wildlife Service in the upper Niagara River. In addition, 36 sediment grab samples were collected to groundtruth the geophysical data. These data were used to map the spatial distribution of fine-grained sediment, including volume data in certain locations, along the shallow shorelines of the upper Niagara River. Overall, the most extensive deposits were spatially associated with either small tributaries or with man-made structures that modified the natural flow of the system. Extensive beds of submerged aquatic vegetation (SAV) were also mapped. Although always associated with a fine-grained matrix, the SAV beds were patchy in distribution, which might reflect subtle differences in the grain size of the sediment matrix or could simply be a function of variations in species or growth. The maps generated from this effort can be used to guide sampling plans for future studies of contamination in fine-grained sediment regions.
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Baca, P., and A. Smith. Fabrication of a laminate structure for a geophysical electrical simulator. Office of Scientific and Technical Information (OSTI), October 1989. http://dx.doi.org/10.2172/5422134.

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Sobczak, L. W., D. A. Forsyth, A. Overton, and I. Asudeh. Crustal Structure From Seismic and Gravity Studies [Chapter 5: Geophysical Characteristics]. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/133966.

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Barker, Colin, Herbert Carroll, Richard Erickson, Steve George, Genliang Guo, T. K. Reeves, Bijon Sharma, Michael Szpakiewicz, and Len Volk. Investigations on the Structure Tectonics, Geophysics, Geochemistry, and Hydrocarbon Potential of the Black Mesa Basin, Northeastern Arizona. Office of Scientific and Technical Information (OSTI), April 1999. http://dx.doi.org/10.2172/6058.

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CARNIEL, Roberto, Cyril PSHENICHNY, Zina KHRABRYKH, Victoria SHTERKHUN, and Paolo PASCOLO. Modeling Models: Understanding of Structure of Geophysical Knowledge by the Event Bush Method. Cogeo@oeaw-giscience, September 2011. http://dx.doi.org/10.5242/iamg.2011.0072.

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Lyatsky, H. V. Regional Geophysical Contraints On Crustal Structure and Geologic Evolution of the Insular Belt, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/131965.

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