Abstract This study focuses on the Tiouit mining area, which is reputed for its gold mineralization associated with sulfides and hematite hosted in quartz veins. The composition of granitoid hosts and their tectonic structuring, guided by tectonic accidents, NE-SW, and E-W directions related to the late Pan-African phase, are metallotects for gold exploration. Besides, the physical properties of its mineralogical associations and their setting in the mining area of Tiouit and other mining sites in the Jbel Saghro massif are characterized by a strong contrast of magnetization that can be mapped by the magnetic method. This latter is supplemented by a geochemical exploration of 632 samples of stream sediment to emphasize the geochemical anomalies associated with magnetic anomalies and lineaments within which sources may generally not outcrop on the surface. The processing and interpretation of the magnetic data covering the Tiouit area have highlighted several zones with promising prospects from a mining viewpoint. The residual magnetic map reduced to the pole reveals close connections between high amplitude anomalies and Precambrian age formations, represented by diorites, granites, rhyolites, and ignimbrites. Those of low amplitude is linked to Paleozoic coverage marked by conglomerates, sandstones, dolomites, and argillites. The vertical gradient allowed a better understanding of Triassic volcanism, manifested by magmatic injections in the form of microgabbroic dyke with a NE-SW direction. From a mining point of view, a detailed mapping of the main magnetic axes has been carried out, and which are correlated with faults of E-W, NNW-SSE, NNE- SSW, and ENE-WSW directions, corresponding to highly crushed and hematized areas. Moreover, the magnetic contacts obtained by Euler's deconvolution show a dominance of the NE-SW to E-W directions, reflecting the structural and geological context of Tiouit, which is dominated by Hercynian faults characterized by a rooting exceeding 1600 m. The examination of geochemical anomaly maps in Arsenic, Zinc, and Iron shows very high levels in the order of 136 ppm, 392 ppm, and 10.63%, respectively. The compilation of the various results and their calibrations with geological data makes it possible to highlight 7 main potential mining areas, which could be considered promising. Two of these areas are located in the Northern and Southern peripheries of the Tiouit gold mine. This calls for special attention during exploration.

中文翻译：

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一个古老的 Tiouit 金矿（东阿特拉斯，摩洛哥）周围的直升机载磁和河流沉积物地球化学数据的综合分析：地质和采矿解释

摘要 本研究的重点是 Tiouit 矿区，该矿区以其与石英脉中的硫化物和赤铁矿伴生的金矿化而闻名。以与晚泛非相相关的构造事故、NE-SW 和 EW 方向为指导，花岗岩主体的组成及其构造构造是金矿勘探的成矿作用。此外，其矿物组合物的物理性质及其在 Tiouit 矿区和 Jbel Saghro 地块其他矿区的矿区的物理特性具有强烈的磁化对比，可通过磁法绘制。后者通过对 632 个河流沉积物样本的地球化学勘探进行补充，以强调与磁异常和线状结构相关的地球化学异常，其中源通常不会在地表露头。对覆盖 Tiouit 地区的磁数据的处理和解释突出了几个从采矿角度看具有广阔前景的区域。缩小到极地的剩磁图揭示了高振幅异常与以闪长岩、花岗岩、流纹岩和熔凝灰岩为代表的前寒武纪时代地层之间的密切联系。那些低振幅与以砾岩、砂岩、白云岩和泥质岩为标志的古生代覆盖范围有关。垂直梯度可以更好地了解三叠纪火山作用，表现为具有 NE-SW 方向的微辉长岩脉形式的岩浆注入。从采矿角度，对主磁轴进行了详细测绘，主要磁轴与EW、NNW-SSE、NNE-SSW和ENE-WSW方向的断层相关，对应高度压碎和血红区. 此外，通过欧拉反褶积获得的磁接触显示出 NE-SW 到 EW 方向的优势，反映了 Tiouit 的结构和地质背景，其主要是海西断层，其特征是根系超过 1600 m。对砷、锌和铁的地球化学异常图的检查显示，含量非常高，分别约为 136 ppm、392 ppm 和 10.63%。各种结果的汇编及其与地质数据的校准使得可以突出 7 个主要的潜在矿区，这可以被认为是有希望的。其中两个区域位于 Tiouit 金矿的北部和南部周边。这需要在探索过程中特别注意。