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首页> 外文期刊>Arabian journal of geosciences >Estimation of Curie point depth in southwestern Yemen from spectral analysis of aeromagnetic data
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Estimation of Curie point depth in southwestern Yemen from spectral analysis of aeromagnetic data

机译：从气磁数据光谱分析中估算西南部的居里深度深度

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摘要

Curie point depths in southwestern Yemen were determined from radially averaged power spectra of the reduced to the pole aeromagnetic data by the modified centroid method. The results show that shallow CPD zones occurred in the western and southeastern parts of the area associated mainly with Tertiary and Quaternary volcanic regions, respectively. The distribution of hot springs and hot groundwater wells through the area is correlated well with the mapped shallow zones and thermal gradient regions around them. On the other hand, the deepest CPD zone is attributed to a hot mantle upwelling underplating the crust beneath the volcanic plateau and crystalline basement margins in the middle part of the area. This spot forming the most probable source of magma for the Quaternary volcanic activity in the area. The observed geothermal activity at Al Lisi-Isbil, Damt, and Al Qafr fields is ascribed to the heat derived from shallow magmatic bodies, with temperature less than Curie temperature of magnetite, and also to the heat transferred from the underlain hot mantle spot through a net of deep faults affected this region.
机译：通过改进的质心法从径向平均功率光谱中确定了西南也门的居里点深度。结果表明，浅层CPD区分别发生在主要与三级和四元火山地区相关联的地区的西部和东南部。通过该区域的热弹簧和热地水孔的分布与映射的浅区和周围的热梯度区域相比很好。另一方面，最深的CPD区域归因于在该地区的中间部分的火山高原下面的外壳下面的外壳上升的热情地幔。该地点为该地区的四季火山活动形成最可能的岩浆源。在Al Lisi-Isbil，Damt和Al QAFR领域观察到的地热活动归因于浅岩体体的热量，温度小于磁铁矿的居里温度，以及通过A通过底层热的地幔斑传递的热量。深度断层净影响了该地区。

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