...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Arabian journal of geosciences >The role of aeromagnetic data analysis (using 3D Euler deconvolution) in delineating active subsurface structures in the west central Arabian shield and the central Red Sea, Saudi Arabia
【24h】

The role of aeromagnetic data analysis (using 3D Euler deconvolution) in delineating active subsurface structures in the west central Arabian shield and the central Red Sea, Saudi Arabia

机译：航空磁数据分析（使用3D欧拉反褶积）在描绘阿拉伯中部西部屏蔽和沙特阿拉伯中部红海活动地下结构时的作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, we present a case study of structural mapping by applying the 3D Euler method to the highresolution aeromagnetic data that was collected in the west central Arabian Shield region and the coastal region of the central Red Sea in Saudi Arabia. We show the 3D Euler deconvolution algorithm and apply it to magnetic potential field data from the west Central Arabian Shield and the Central Red Sea. The solution obtained with 3D Euler deconvolution gives better-focused depth estimates, which are closer to the real position of sources; the results presented here can be used to constrain depth to active crustal structures (volcanisms) for the study area. The results indicated that the area was affected by sets of fault systems, which primarily trended in the NNW-SSE, NW-SE, EW, and NE-SW directions. Moreover, estimated Euler solution map from aeromagnetic data delineated also the boundaries of shallow, small, and confined magnetic bodies on the offshore section of the study area. These nearly exposed basement intrusions are most likely related to the Red Sea Rift and may be associated with structures higher up in the sedimentary section. These volcanic bodies are extended to the continental part (onshore) of the west central Arabian Shield, particularly beneath both sides of the Ad Damm fault zone. This extension verifies that the fault was largely contemporaneous with a major period during the extension of the Red Sea Basin. Moreover, according to the distribution of circular magmatic-source bodies (circular-shaped ring dikes) that resulted from this study, we can state that the clustering of most earthquakes along this fault may most likely be attributed to the active mantle upwelling (volcanic earthquakes), which are ultimately related to volcanic processes. Furthermore, the oceanic crustal structures near and in the Red Sea offshore regions were also estimated and discussed according to the ophiolite occurrences and further opening of the Red Sea. Our results are largely comparable with studies of previous crustal sections, which were performed along the Red Sea Rift and the Arabian Shield.As a result, the areas above these anomalies are highly recommended for further geothermal study. This example illustrates that high-resolution aeromagnetic surveys can greatly help delineating the subsurface active structures in the west central Arabian Shield and the middle coastal region of the Red Sea of Saudi Arabia.
机译：在本文中，我们通过将3D Euler方法应用于在沙特阿拉伯中西部阿拉伯中部地区和红海中部沿海地区收集的高分辨率航空磁数据，来进行结构映射的案例研究。我们展示了3D Euler反卷积算法，并将其应用于来自西部中部阿拉伯盾和中部红海的磁场势场数据。使用3D欧拉反卷积获得的解决方案可提供更集中的深度估计，更接近源的实际位置;此处提供的结果可用于将深度限制为研究区域的活动地壳结构（火山作用）。结果表明，该地区受到一系列断裂系统的影响，主要在NNW-SSE，NW-SE，EW和NE-SW方向上发展。此外，根据航空磁数据估算出的欧拉解图，还描绘了研究区域近海段上浅，小和受限磁性体的边界。这些几乎裸露的地下侵入体很可能与红海裂谷有关，并且可能与沉积区中较高的构造有关。这些火山体延伸到阿拉伯盾构西部中部的大陆部分（陆上），特别是在Ad Damm断层带的两侧下方。这次延伸证实了该断层与红海盆地延伸期间的一个主要时期同时发生。此外，根据这项研究产生的圆形岩浆源体（圆形环状堤坝）的分布，我们可以说，沿着该断层的大多数地震的聚集很可能归因于活跃的地幔上升流（火山地震） ），最终与火山喷发有关。此外，还根据蛇绿岩的发生和红海的进一步开放，对红海近海区域及其附近的海洋地壳结构进行了估算和讨论。我们的结果在很大程度上与以前沿红海裂谷和阿拉伯盾构进行的地壳剖面研究具有可比性，因此强烈建议将这些异常之上的区域用于进一步的地热研究。该示例说明，高分辨率航空电磁勘测可以极大地帮助描绘阿拉伯盾构西部中部和沙特阿拉伯红海中部沿海地区的地下活动结构。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号