Interactions between volcanic and tectonic processes affect the distribution, morphology, and volume of eruptive products in space and time. The Queréndaro area in the eastern Michoacán-Guanajuato Volcanic Field affords an exceptional opportunity to understand these relationships. Here, a Pleistocene lava plateau and 20 monogenetic volcanoes are vented from an active ENE-striking segment of the Morelia-Acambay fault system. Thirteen scoria cones are aligned along this structure, vented from an extensional gap in between two rotated hanging wall blocks of a listric fault. A new geological map, volcanic stratigraphy, and 40Ar/39Ar dating indicate that this lava plateau and volcanic cluster were emplaced from 0.81 to 0.25 Ma by 11 intermittent eruptive epochs separated by ca. 0.05 Ma, emplacing a total magma volume of 5 km3. Petrography and chemistry of rocks suggest that all volcanic structures were fed by three different magma batches but vented from independent feeder dikes. Our results indicate that preexisting faults exert a strong influence on volcanic spatial and temporal distribution, volcanic morphology, magma volume, and eruptive dynamics in this area. ENE-breached and ENE-elongated scoria cones indicate parallel subsurface fissure and feeder dikes. Additionally, points of maximum fault dilation at depth related to a transtensive state of stress coincide with less fragmented deposits and larger magma volumes. Furthermore, this study raises important questions on the geodynamics of volcano-tectonic interactions possible in similar monogenetic volcanic alignments worldwide.

中文翻译：

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在米却肯-瓜纳华托火山场中对既有断层的控制，单相火山作用的分布，形态和体积

火山与构造过程之间的相互作用会影响喷发产物在空间和时间上的分布，形态和体积。米却肯州-瓜纳华托州东部火山场的克伦达罗地区为了解这些关系提供了难得的机会。在这里，从莫雷利亚-阿坎贝伊断层系统的活跃的ENE冲动段放出了一个更新世的熔岩高原和20个单基因火山。沿该结构排列的十三个圆锥体圆锥体，从利斯特断裂的两个旋转的悬挂壁砌块之间的延伸间隙中排出。一个新的地质图，火山地层学和40Ar / 39Ar测年表明，该熔岩高原和火山团簇由11个由ca隔开的间歇性喷发时期从0.81到0.25 Ma处位。0.05 Ma，总岩浆量为5 km3。岩石学和岩石化学性质表明，所有火山结构均由三批不同的岩浆供入，但由独立的支流堤排出。我们的结果表明，既存断层对该地区的火山时空分布，火山形态，岩浆体积和喷发动力学有很大影响。ENE裂开和ENE伸长的矿渣锥表示平行的地下裂隙和冒口堤。此外，在深度上与断层应力状态有关的最大断层扩张点与较少的碎屑沉积和较大的岩浆体积相吻合。此外，这项研究对全球范围内类似的单基因火山路线中可能存在的火山—构造相互作用的地球动力学提出了重要的问题。