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首页> 外文期刊>Geoscience journal >Structural control of hydrogeological aquifers in the Bahariya Oasis, Western Desert, Egypt
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Structural control of hydrogeological aquifers in the Bahariya Oasis, Western Desert, Egypt

机译：埃及西沙漠中的水文地质含水层的结构控制

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摘要

This work addresses the detection of aquifers and the delineation of subsurface structures predominant in the basement rocks and their relations with these aquifers at the Bahariya Oasis, Western Desert, Egypt, and the relationship between the subsurface structures and the aquifers. In this respect, land geomagnetic and geoelectric-reconnaissance surveys were carried out over the oasis. Additionally, wells and bore-hole logs were used to verify the results and to explore the distributions of the subsurface reservoirs and the geological sequences. The results illustrate that the main groundwater aquifers in the fractured limestone ranges from 40 m to 90 m in depth and in the saturated Nubian sandstone from 800 m to 1200 m in depth. The thickness of the Carbonate reservoir varies from 90 m to 160 m. The Nubian sandstone formation that unconformably overlies the basement rocks has a thickness of approximately 250 m. In general, the depth to the basement rocks ranges from 1.2 km and 2.9 km in certain local areas according to the magnetic data. The structure trend analyses show that the dominant tectonic trends are northeastward and northwestward. These structures play an important role in controlling the aquifer depths and most probably supply water from the deeper Nubian aquifer to the shallower Carbonate aquifer.
机译：这项工作解决了含水层的检测和地下结构的描绘，在地下室岩石中主要是在巴哈里亚绿洲，西部沙漠，埃及的与这些含水层的关系以及地下结构与含水层之间的关系。在这方面，在绿洲进行土地地磁和地电侦察调查。另外，使用井和钻孔日志来验证结果并探索地下储层的分布和地质序列。结果表明，骨折石灰岩中的主要地下水含水层的深度为40米至90米，深度为800米至1200米的饱和Nubian砂岩。碳酸盐储存器的厚度从90μm变化到160μm。 Nubian砂岩形成，即无关紧要地覆盖地下室岩石的厚度约为250米。通常，根据磁数据，地下室岩石的深度范围为1.2 km和4.9km，根据磁数据。结构趋势分析表明，主导的构造趋势在东北和西北地区。这些结构在控制含水层深度方面发挥着重要作用，并且最可能从更深的Nubian含水层供水到较浅的碳酸盐含水层。

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