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Tectonic evolution of Kutch sedimentary basin, western India
Journal of Earth System Science ( IF 1.3 ) Pub Date : 2020-03-04 , DOI: 10.1007/s12040-019-1337-9
K Chandra Mouli , P Chandrasekhar , D P Rao , V K Dadhwal

Lithological variations, circular spectral anomalies, geological structures such as folds, faults, lineaments and shear zones of Kutch sedimentary basin were interpreted using IRS-LISS III satellite data. Aeromagnetic data was also interpreted qualitatively and quantitatively and a number of anomalous magnetic zones, faults, lineaments and domal structures were mapped. Magnetic basement depths and thickness of sediments were also computed. A number of alternate basement ridges/highs/uplifted blocks and depressions/lows/downthrown blocks were delineated. The information obtained from satellite remote sensing and aeromagnetic data were then integrated and the results were compared with published literature on gravity, magnetic (ground), magnetotelluric and seismic data, and also with field geology and well data. Structural controls in spatial domain (latitude, longitude and depth) were derived by establishing spatial relationship among different geological structures with reference to the geological time scale. Numerous horst and graben structures (ridges and sub-basins) as well as a number of master faults were delineated which serve as vital information with regard to hydrocarbon prospects and earthquake vulnerability, respectively. Based on the information obtained from this integrated study, a conceptual tectonometamorphic model along with sedimentation and igneous activity (ophiolitic and basaltic) has been constructed which has a significant bearing on the sequence of events that occurred during the deformational history of Kutch sedimentary basin resulting into the present day tectonic configuration.



中文翻译:

印度西部库彻沉积盆地的构造演化

使用IRS-LISS III卫星数据解释了库奇沉积盆地的岩性变化,圆形光谱异常,地质结构(如褶皱,断层,线形和剪切带)。还对定性和定量地解释了航空磁数据,并绘制了许多异常磁带,断层,构造和穹顶结构。还计算了磁性基底的深度和沉积物的厚度。画出了许多交替的地下室脊/高/抬高块和凹陷/低/下倾块。然后将从卫星遥感和航空磁数据获得的信息进行整合,并将结果与​​已发表的有关重力,磁(地),大地电磁和地震数据以及野外地质和井眼数据的文献进行比较。通过参照地质时标建立不同地质结构之间的空间关系,得出了空间域(纬度,经度和深度)中的结构控制。描绘了众多的地貌和陷结构(山脊和子盆地)以及许多主断层,它们分别是有关油气勘探和地震脆弱性的重要信息。根据从这项综合研究中获得的信息,构造了一个概念性的地貌形变模型,包括沉积和火成活动(火山岩和玄武岩),这与库奇沉积盆地变形史导致的事件顺序有关。当今的构造构造。经度和深度)是通过参照地质时标建立不同地质结构之间的空间关系而得出的。描绘了众多的地貌和陷结构(山脊和子盆地)以及许多主断层,它们分别是有关油气勘探和地震脆弱性的重要信息。根据从这项综合研究中获得的信息,构造了一个概念性的地貌形变模型,包括沉积和火成活动(火山岩和玄武岩),这与库奇沉积盆地变形史导致的事件顺序有关。当今的构造构造。经度和深度)是通过参照地质时标建立不同地质结构之间的空间关系而得出的。描绘了众多的地貌和陷结构(山脊和子盆地)以及许多主断层,它们分别是有关油气勘探和地震脆弱性的重要信息。根据从这项综合研究中获得的信息,构造了一个概念性的地貌形变模型,包括沉积和火成活动(火山岩和玄武岩),这与库奇沉积盆地变形史中发生的事件顺序有关。当今的构造构造。

更新日期:2020-04-16
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