The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform
Kurt Decker - One of the best experts on this subject based on the ideXlab platform.
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strike slip tectonics and quaternary basin formation along the vienna basin Fault system inferred from bouguer gravity derivatives
Tectonics, 2012Co-Authors: Bernhard Salcher, Kurt Decker, Bruno Meurers, Jeroen Smit, Monika Holzel, Michael WagreichAbstract:[1] The Vienna Basin at the transition between the Alpine and Carpathian belt hosts a number of large Pleistocene sub-basins forming along an active continental scale Strike-Slip Fault (Vienna Basin Strike-Slip Fault). We utilize first-order derivatives from industrial Bouguer gravity data to unravel the impacts of Pleistocene kinematics on the Vienna Basin and to compensate for the lack of near-surface Fault data. Anomalies have been evaluated by independent geophysical and geological data and were integrated to build up a tectonic model. Factors influencing the wavelength and the amplitude of anomalies were additionally investigated by 2-D models to better interpret field data. Subsidence and related accumulation of Quaternary sediments in the Vienna Basin produce significant gravity signals related to the activity of the Strike-Slip Fault. The constrained Fault patterns and structures highlight tight and elongated transtensional pull-apart basins with typically associated features like separated depocenters and Riedel fractured sidewalls in an en-echelon alignment. Further Pleistocene basins are highlighted as tectonic grabens developing along branches of the master Fault. The Vienna Basin is additionally affected by minor deformation represented by both subsidence along major Miocene sidewalls and NW-SE Faulting resulting in distinct topographic features, which manifests kinematics on a regional scale. The clear density contrasts between Miocene marine and Quaternary terrestrial sediments, as well as the exceptional database, provide a unique framework to demonstrate advantages of incorporating gravity derivatives for near-surface Fault analysis.
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3d geometry and kinematics of the lassee flower structure implications for segmentation and seismotectonics of the vienna basin strike slip Fault austria
Tectonophysics, 2011Co-Authors: Andreas Beidinger, Kurt DeckerAbstract:Abstract The active Vienna Basin strike–slip Fault consists of several segments, which differ both in their kinematic and seismotectonic properties. Mapping of industrial 2D seismic, geomorphological data and Quaternary basin analysis proves that active deformation uses Miocene Faults. This is shown in detail for the negative flower structure of the Lassee Fault Segment, which developed during the Miocene and was reactivated in the Quaternary. The flower structure consists of Riedel-type splay Faults, which merge in a major branch line at the top of the principle displacement zone (PDZ) in approximately 3.5–5.5 km depth. Mapping the PDZ of the Vienna Basin strike - slip Fault in the continuations of the Lassee Segment reveals several Fault segments which differ by the orientation of the PDZ. NE- and NNE-striking segments with releasing bend geometries are associated with Quaternary basins. These segments are delimited by Fault-bends where the strike of the PDZ changes by angles of 20°–35°, and are connected by ENE-striking segments orientated parallel to the displacement vector. Among the releasing bends, the Lassee Segment is subject to increased extension due to the high angle (ca. 35°) between the general slip vector and the orientation of the segment. Resulting extension seems to be accommodated by both, the negative flower structure and normal Faults, which branch off from the PDZ south of the Lassee releasing bend. The significant Fault bends of 20°–35° delimiting the geometrical Fault segments are regarded to act as impediments during dynamic rupture propagation. Hence, Fault segment dimensions can be used for constraining the maximum Fault surfaces, which can break during single earthquakes. The data on active kinematics and Fault segmentation of the Vienna Basin strike–slip Fault system therefore may serve as a basic input for future assessments of maximum credible earthquake estimates.
Nat Tilander - One of the best experts on this subject based on the ideXlab platform.
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seismic reflection imaging of a major strike slip Fault zone in a rift system paleogene structure and evolution of the tan lu Fault system liaodong bay bohai offshore china
AAPG Bulletin, 2004Co-Authors: Liyuan Hsiao, Stephan A Graham, Nat TilanderAbstract:The Tan-Lu Fault system in the Liaodong Bay, Bohai, offshore China, affords an exceptional opportunity to document the structural features of a major Strike-Slip Fault using two- and three-dimensional seismic reflection data, as well as evolution of a Strike-Slip Fault developed coeval with a rift system. The Fault zone displays a relatively straight, throughgoing trace longitudinally bisecting the rift valley. It consists of positive and negative flower structures and en echelon folds in the south bay, and three parallel, flower-structure systems northward. The middle Fault bifurcates northward into two semiparallel vertical Fault strands. To the north, the west strand bends clockwise and merges with the east strand. The stepping pattern and orientation of en echelon structures indicate right-lateral sense and about N10–35E azimuth of slip. The Fault apparently accrued about 30–40 km (20–25 mi) of post-early Eocene slip based on the current distribution of deformation zones and depocenters. Tan-Lu Fault segments with clockwise and counterclockwise orientation relative to the regional slip direction are characterized by divergent and convergent structures (i.e., restraining and releasing bends), respectively. Waning of rifting eliminated the cause of a major restraining bend, putting an end to development of associated convergent structures in the south bay area. Near the central-north bay, deformation occurred along major normal Faults related to the basin rifting. Although a prominent feature reflecting regional strain partitioning, the Tan-Lu Fault apparently was not a major factor in the Paleogene opening of the Liaodong Bay basin and the larger North China rift basin.
Wei Zheng - One of the best experts on this subject based on the ideXlab platform.
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a semi empirical model for peak strain prediction of buried x80 steel pipelines under compression and bending at strike slip Fault crossings
Journal of Natural Gas Science and Engineering, 2016Co-Authors: Hong Zhang, Wei ZhengAbstract:Abstract The Strike-Slip Fault is a main type of permanent ground deformation (PGD) faced by long distance gas pipelines. Based on the non-linear finite element method, a numerical model for buried pipelines at Strike-Slip Fault crossings under compression combined with bending was proposed at first. The model, with the advantages of reduced time consumption and high precision, was proven to be reasonable by comparing the numerical results with previous researchers' experiments and numerical results. The peak compressive strain of X80 steel pipelines subjected to Strike-Slip Fault displacement under compression combined with bending was studied using the FE model. According to the investigation of the Second West to East Gas Pipeline Project, suitable ranges of all parameters, including the pipe diameter, wall thickness, soil properties, Fault displacement and crossing angle, were obtained. The influence of these parameters on the peak compressive strain was discussed in detail. A regression equation for predicting the peak compressive strain of X80 steel pipelines was derived based on approximately 800 numerical results and regression analysis, and the applicable range of the formula was given. 15 true design cases of the Second West to East Pipeline Project in China were investigated to demonstrate the accuracy and applicability of the proposed methodology by comparing the predicted peak compressive strain results with the FEM results. It was shown that the proposed semi-empirical model predicts the peak compressive strain with good accuracy much less time consumption. It is thus applicable for the strain-based and reliability-based design of X80 steel pipelines subjected to Strike-Slip Fault displacement.
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a semi empirical model for peak strain prediction of buried x80 steel pipelines under compression and bending at strike slip Fault crossings
Journal of Natural Gas Science and Engineering, 2016Co-Authors: Xiaoben Liu, Hong Zhang, Yinshan Han, Mengying Xia, Wei ZhengAbstract:Abstract The Strike-Slip Fault is a main type of permanent ground deformation (PGD) faced by long distance gas pipelines. Based on the non-linear finite element method, a numerical model for buried pipelines at Strike-Slip Fault crossings under compression combined with bending was proposed at first. The model, with the advantages of reduced time consumption and high precision, was proven to be reasonable by comparing the numerical results with previous researchers' experiments and numerical results. The peak compressive strain of X80 steel pipelines subjected to Strike-Slip Fault displacement under compression combined with bending was studied using the FE model. According to the investigation of the Second West to East Gas Pipeline Project, suitable ranges of all parameters, including the pipe diameter, wall thickness, soil properties, Fault displacement and crossing angle, were obtained. The influence of these parameters on the peak compressive strain was discussed in detail. A regression equation for predicting the peak compressive strain of X80 steel pipelines was derived based on approximately 800 numerical results and regression analysis, and the applicable range of the formula was given. 15 true design cases of the Second West to East Pipeline Project in China were investigated to demonstrate the accuracy and applicability of the proposed methodology by comparing the predicted peak compressive strain results with the FEM results. It was shown that the proposed semi-empirical model predicts the peak compressive strain with good accuracy much less time consumption. It is thus applicable for the strain-based and reliability-based design of X80 steel pipelines subjected to Strike-Slip Fault displacement.
Michael Wagreich - One of the best experts on this subject based on the ideXlab platform.
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strike slip tectonics and quaternary basin formation along the vienna basin Fault system inferred from bouguer gravity derivatives
Tectonics, 2012Co-Authors: Bernhard Salcher, Kurt Decker, Bruno Meurers, Jeroen Smit, Monika Holzel, Michael WagreichAbstract:[1] The Vienna Basin at the transition between the Alpine and Carpathian belt hosts a number of large Pleistocene sub-basins forming along an active continental scale Strike-Slip Fault (Vienna Basin Strike-Slip Fault). We utilize first-order derivatives from industrial Bouguer gravity data to unravel the impacts of Pleistocene kinematics on the Vienna Basin and to compensate for the lack of near-surface Fault data. Anomalies have been evaluated by independent geophysical and geological data and were integrated to build up a tectonic model. Factors influencing the wavelength and the amplitude of anomalies were additionally investigated by 2-D models to better interpret field data. Subsidence and related accumulation of Quaternary sediments in the Vienna Basin produce significant gravity signals related to the activity of the Strike-Slip Fault. The constrained Fault patterns and structures highlight tight and elongated transtensional pull-apart basins with typically associated features like separated depocenters and Riedel fractured sidewalls in an en-echelon alignment. Further Pleistocene basins are highlighted as tectonic grabens developing along branches of the master Fault. The Vienna Basin is additionally affected by minor deformation represented by both subsidence along major Miocene sidewalls and NW-SE Faulting resulting in distinct topographic features, which manifests kinematics on a regional scale. The clear density contrasts between Miocene marine and Quaternary terrestrial sediments, as well as the exceptional database, provide a unique framework to demonstrate advantages of incorporating gravity derivatives for near-surface Fault analysis.
Lu Yun - One of the best experts on this subject based on the ideXlab platform.
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Structural characterization and hydrocarbon prediction for the SB5M Strike-Slip Fault zone in the Shuntuo Low Uplift, Tarim Basin
Marine and Petroleum Geology, 2020Co-Authors: Ziyi Wang, Zhiqian Gao, Tailiang Fan, Shang Yaxin, Lu YunAbstract:Abstract Newly discovered superdeep marine carbonate reservoirs with burial depths of more than 7000 m are found in the Shuntuo Low Uplift, Tarim Basin, China. Previous exploration experience indicates that Strike-Slip Faults in these deposits played a key role in reservoir formation and hydrocarbon accumulation. This paper describes the structural and hydrocarbon characteristics of the SB5M Strike-Slip Fault zone in the Shuntuo Low Uplift based on the study of high-quality 3-D seismic volumes and drilling data. The SB5M Fault is a repeatedly reactivated Strike-Slip vertical Fault zone. In the Paleozoic strata, the SB5M Strike-Slip Fault zone is composed of sub-vertical Strike-Slip Faults in the deep layer, a graben structure in the middle layer, and en-echelon normal Faults in the shallow layer. The deep, middle and shallow Faults developed sequentially at different times and formed as a result of three-stage evolution: the Middle Caledonian, Late Caledonian, and Middle-Late Hercynian. Fracture networks formed by repeated Fault activity provided pathways for karst flow and hydrocarbons, which are conducive to the formation of fracture–cavity reservoirs. Due to the Fault damage zone-Fault core transition and the complex structural features, the reservoirs controlled by the SB5M Strike-Slip Fault zone feature strong heterogeneity. The data sets presented and evolution models established in this paper provide important data for the exploration and development of the SB5M Strike-Slip Fault zone and represent references for structural analysis and hydrocarbon exploration of Strike-Slip Fault zones in the Tarim Basin and elsewhere.
