A multiple shallow-seated magmatic intrusion model has been proposed by Urbani et al. (2020) for the resurgence of the Los Potreros caldera floor, in the Los Humeros volcanic complex (LHVC). This model predicts (1) the occurrence of localized bulges in the otherwise undeformed caldera floor, and (2) that the faults corresponding to different bulges exhibit different spatial and temporal evolution. Published data and a morphological analysis show that these two conditions are not met at Los Potreros caldera. A geothermal well (H4), located at the youngest supposed bulge (Loma Blanca) for which Urbani et al. (2020) calculated an intrusion depth (425±170 m), does not show any thermal and lithological evidence of such a shallow-seated cryptodome. Finally, published stratigraphic data and radiometric dating disprove the proposed common genesis of Holocene resurgence faulting and viscous lavas extruded in the centre of the caldera. Even if recent shallow intrusions do exist in the area, published data indicate that the pressurization of the LHVC magmatic–hydrothermal system driving resurgence faulting occurs at greater depth. Thus, we suggest that the model and calculation proposed by Urbani et al. (2020) are unlikely to have any relevance to the location, age and emplacement depth of magma intrusions driving resurgence at the Los Potreros caldera.

中文翻译：

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Urbani等人的评论“估计新生火山口的侵入深度和演变：Los Humeros（墨西哥）”。（2020年）

Urbani等人提出了一种多浅层岩浆侵入模型。（2020年）为Los Humeros火山综合体（LHVC）中的Los Potreros破火山口地板的复兴。该模型预测（1）否则在未变形的火山口底板中会出现局部凸起，并且（2）对应于不同凸起的断层表现出不同的时空演化。公开的数据和形态分析表明，Los Potreros破火山口没有满足这两个条件。地热井（H4），位于Urbani等人认为最年轻的凸起处（Loma Blanca）。（2020）计算出入侵深度（425±170 m），没有显示出这种浅层隐伏穹顶的任何热学和岩性证据。最后，已公开的地层数据和放射线测年证明了全新世再造断层和火山口中央挤出的粘性熔岩的常见成因。即使该地区确实存在近期的浅层侵入，但已公布的数据表明，LHVC岩浆-热液系统驱动回潮断层的增压发生在更大的深度。因此，我们建议Urbani等人提出的模型和计算。（2020年）不太可能与推动洛斯波德罗斯破火山口复兴的岩浆侵入的位置，年龄和进位深度有关。