Abstract Hot springs and related deposits are common features in active geothermal areas around the world. In this study, centered on the Ixtlan de los Hervores geothermal zone (Michoacan, Mexico), we analyzed the distribution of active hydrothermal manifestations and hot-spring deposits as well as the local stratigraphy to determine the influence of the faults in the hydrothermal fluid circulation. The hydrothermal manifestations are mainly represented by hot springs with water temperatures up to 92 °C (depositing silica sinter at the surface). All the hydrothermal features are located within a tectonic depression controlled by the potentially active Ixtlan-Encinal fault. Inside this depression, lacustrine sediments were deposited from Pliocene up to the Hispanic colony period (~XVI–XIX centuries). A pre-Hispanic silica-sinter layer was identified beneath the lacustrine sediments, as well as a debris flow deposit, rich in pottery, suggesting that the debris flow may have affected local inhabitants during pre-Hispanic times.

中文翻译：

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墨西哥 Ixtlán de los Hervores 地热区热液上升流的结构控制

摘要 温泉及相关矿床是全球活跃地热区的共同特征。在这项研究中，我们以 Ixtlan de los Hervores 地热区（墨西哥米却肯州）为中心，分析了活动热液表现和温泉矿床的分布以及当地地层，以确定断层对热液流体环流的影响. 热液表现主要以水温高达92℃的温泉（表面沉积二氧化硅烧结体）为代表。所有热液特征都位于受潜在活动的 Ixtlan-Encinal 断层控制的构造凹陷内。在这个洼地内，湖相沉积物从上新世一直沉积到西班牙殖民地时期（~16-19 世纪）。