论文标题
使用卫星图像和构造建模探索西北孟加拉盆地的地下表面关系
Exploring Basement Surface relationship of north-west Bengal Basin using satellite images and tectonic modeling
论文作者
论文摘要
孟加拉盆地是最厚的沉积盆地之一，不断受到印度板块与缅甸和藏族板的碰撞的影响。盆地的西北部是我们的研究区域，是探索最少的地下室断层的区域之一。关于地下室的起源及其在地表地面形成中的作用存在争议。我们分析了卫星图像，布格尔异常数据，并开发了一个地球动力学模型，以探索断层地下室和表面地面之间的关系。卫星图像和重力异常显示表面地形与基底断层结构之间的空间相关性。高架的区域和低洼的洪水平原位于重力高点（Horsts）和低点（抓地力）上。地球动力学模型表明，共轭推力断层可能存在于将horst块向上推动的HORST下方。我们的观察结果表明，区域压缩和地下室断层对地表地面的发展（如隆起的道和低洼的洪水平原）具有更大的影响。
The Bengal basin is one of the thickest sedimentary basins and is being constantly affected by the collision of the Indian plate with the Burma and Tibetan plates. The northwest part of the basin, our study area, is one of the least explored areas where the shallowest faulted basement is present. Controversies exist about the origin of the basement and its role to the formation of surface landforms. We analyze satellite images, Bouguer anomaly data, and develop a geodynamic model to explore the relationship between the faulted basement and surface landforms. Satellite images and gravity anomalies show a spatial correlation between the surface topography and basement fault structures. The elevated tracts and the low-lying flood plains are located on top of the gravity highs (horsts) and lows (grabens). The geodynamic model suggests that conjugate thrust faults may exist beneath the horsts that push the horst block upward. Our observations suggest the regional compression and basement faults have a more considerable influence on the development of surface landforms such as the uplifted tracts and the low-lying flood plains.
