The eruptive history of the Pátzcuaro Lake area in the Michoacán Guanajuato Volcanic Field, central México: Field mapping, C-14 and 40Ar/39Ar geochronology

Osorio-Ocampo, Susana; Macías, José Luis; Pola, Antonio; Cardona-Melchor, Silvestre; Sosa-Ceballos, Giovanni; Garduño‐Monroy, Víctor Hugo; Layer, Paul W.; García-Sánchez, Laura; Perton, M.; Benowitz, Jeff

doi:10.1016/j.jvolgeores.2018.06.003

Cited by 28 publications

(30 citation statements)

References 97 publications

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“…Lava domes, small-shields and lava flows are characteristic of there (e.g. [15,16,73]. Although most of the volcanoes seems to be mafic to intermediate (between 50 and 62 wt.% in SiO 2 ; [72]) some reach up to 69 wt.% (e.g.…”

Section: Examplesmentioning

confidence: 99%

Effusive Monogenetic Volcanism

Murcia¹,

Németh²

2021

Updates in Volcanology - Transdisciplinary Nature of Volcano Science

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The study of monogenetic volcanism around Earth is rapidly growing due to the increasing recognition of monogenetic volcanic edifices in different tectonic settings. Far from the idea that this type of volcanism is both typically mafic and characteristic from intraplate environments, it occurs in a wide spectrum of composition and geological settings. This volcanism is widely known by the distinctive pyroclastic cones that represent both magmatic and phreatomagmatic explosive activity; they are known as scoria or spatter cones, tuff cones, tuff rings, maars and maar-diatremes. These cones are commonly associated with lava domes and usually accompanied by lava flows as part of their effusive eruptive phases. In spite of this, isolated effusive monogenetic emissions also appear around Earth’s surface. However, these isolated emissions are not habitually considered within the classification scheme of monogenetic volcanoes. Along with this, many of these effusive volcanoes also contrast with the belief that this volcanism is indicative of rapidly magma ascent from the asthenosphere, as many of the products are strongly evolved reflecting differentiation linked to stagnation during ascent. This has led to the understanding that the asthenosphere is not always the place that directly gives rise to the magma batches and rather, they detach from a crustal melt storage. This chapter introduces four singular effusive monogenetic volcanoes as part of the volcanic geoforms, highlights the fact that monogenetic volcanic fields can also be associated with crustal reservoirs, and outlines the processes that should occur to differentiate the magma before it is released as intermediate and acidic in composition. This chapter also provides an overview of this particular volcanism worldwide and contributes to the monogenetic comprehension for future studies.

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Section: Examplesmentioning

confidence: 99%

Effusive Monogenetic Volcanism

Murcia¹,

Németh²

2021

Updates in Volcanology - Transdisciplinary Nature of Volcano Science

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“…the area is 943 mm (Figure 3 The central part of the TMVB is disrupted by the Morelia-Acambay Fault System (MAFS) that has a predominantly extensional regime with E-W normal faults and NNW-SSE directions (Ferrari et al, 2012;Garduño-Monroy et al, 2009b;Isradé-Alcántara et al, 2005;Pasquarè et al, 1991;Suter et al, 1992). In the Pátzcuaro area, MAFS is represented by the E-W Jarácuaro and Pátzcuaro faults that form a semi-graben with a N-S extension regime (Osorio-Ocampo et al, 2018;Pola et al, 2014b). Paleoseismological studies in the area suggest that severe earthquakes have hit the area during the Holocene (Isradé-Alcántara et al, 2005).…”

Section: Geographic Geological and Tectonic Contextsmentioning

confidence: 99%

“…This study belongs to an ongoing geomorphological inventory aimed to identify hazards related to gravitational movements and to evaluate risks in the area. El Estribo is located at the southern part of the Pátzcuaro Lake, an area covered by circa 45 volcanoes (Osorio-Ocampo et al, 2018). The lake has been the site of lacustrine sedimentation since Miocene (Isradé-Alcántara et al, 2005) with suitable conditions for animals (Robles-Camacho et al, 2010) and human occupation (Osorio-Ocampo et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…El Estribo is located at the southern part of the Pátzcuaro Lake, an area covered by circa 45 volcanoes (Osorio-Ocampo et al, 2018). The lake has been the site of lacustrine sedimentation since Miocene (Isradé-Alcántara et al, 2005) with suitable conditions for animals (Robles-Camacho et al, 2010) and human occupation (Osorio-Ocampo et al, 2018). Lacustrine sedimentation has been disrupted by tectonic and volcanic processes in the past (Garduño-Monroy et al, 2009a;Garduño-Monroy et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Detailed geomorphology of debris avalanches of El Estribo volcanic complex (Central Mexico)

et al. 2020

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The El Estribo Volcanic Complex, located to the south of Pátzcuaro Lake (Central Mexico), forms an elevation based on a shield volcano crowned by a cinder cone. Two debris avalanches, dated at 28,000 and 14,000 ybp, cover an area of 4 km 2 with a typical hummocky topography. The zone is a state natural protected area with no previous studies of hazard and risk from mass movement processes. Herein, we present a detailed geomorphological map of the debrisavalanche area, scale 1:20,000. The approach applied used two hierarchical levels, geomorphological landscapes and landforms. The fault scarp was mapped using highresolution digital elevation models obtained whit unmanned aerial vehicles (UAV) survey. We describe and characterized four main geomorphological units, 20 subunits, 66 hummocks, and the general drainage network. This map is a valuable tool to identify and quantify risks from mass movement processes.

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“…These small volcanoes also hold clues about fundamental processes such as the origin and evolution during transport of mantle-derived magmas, as they undergo limited differentiation and crustal contamination (e.g., Agustín-Flores et al, 2011;Rasoazanamparany et al, 2016;Jankovics et al, 2019;Larrea et al, 2017;2019a;Albert et al, 2020;Ramírez-Uribe et al, 2021). In addition, they conserve information on shallow-level magma degassing and crystallization (Taddeucci et al, 2004;Pioli et al, 2009;Johnson et al, 2008;Riggs and Duffield, 2008), and their activity is strongly linked and hence indicative of structural controls on magma ascent (Settle, 1979;Takada, 1994;Tibaldi, 1995;Connor, 1990;Valentine and Keating, 2007;Valentine and Gregg, 2008;Osorio-Ocampo et al, 2018;Gómez-Vasconcelos et al, 2021). What has received comparatively less attention is their strong interaction with climatic conditions (such as torrential rain; Segerstrom 1950), the pre-eruptive and syn-eruptive topography (Németh et al, 2011;Kereszturi et al 2012;Becerril et al, 2021), and the upper-crust composition (including the occurrence of magma bodies, such as sills or dikes), which will be illustrated here using the case of Las Cabras volcano in Michoacán, Mexico (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Las Cabras volcano, Michoacán-Guanajuato Volcanic Field, México: Topographic, climatic, and shallow magmatic controls on scoria cone eruptions

Guilbaud¹,

Hernández-Jiménez²,

Siebe³

et al. 2021

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Scoria cones are abundant in most volcanic fields on Earth, such as the Michoacán-Guanajuato Volcanic Field, in the central-western sector of the Trans-Mexican Volcanic Belt. However, there are few in-depth studies on their eruptive style and controlling factors, despite of their diversity in shape and composition which implies a wide range of hazards. Here, we present results of morphologic, stratigraphic, sedimentary, petrographic, and geochemical studies of the prominent Las Cabras scoria cone located west of the Zacapu lacustrine basin in the center of the Michoacán-Guanajuato Volcanic Field. This basaltic andesitic to andesitic volcano formed between 27 and 26 kyrs BP on the steep slopes (>10º) of the lava shield of El Tule volcano. Over time, its dominant eruptive style changed from Strombolian to effusive. Initial explosive activity built a 170-m-high scoria cone and deposited thick tephra fallout on the surrounding sloping terrain. Structures in the deposits indicate that early friable fine-grained tephra underwent significant erosion due to syn-eruptive heavy rain coupled with the sloping nature of the underlying ground. This erosion generated lahars that very likely reached the Zacapu lake based on the pre-eruptive topography. As the explosivity dropped, lava was emitted from the base of the cone first to the S and SE, forming a thick, viscous lobe that filled a pre-existing E-W valley. The flow direction then deviated to the N and NE, to form thinner, less-viscous lobes fed from the vent by an open-channel. The lavas are covered by hummocks made of agglutinates and bombs that indicate that the eruption terminated by catastrophic collapse of the SE sector of the cone, possibly triggered by the intrusion of magma within the cone, which destabilized its downslope segment. The sudden flank failure was potentially associated with a late effusive event and the hummocks may have been carried away by the lava surge. Whole-rock chemical variations and crystal disequilibrium textures point toward a complex magma feeding system, involving mixing and mingling between different magma batches. This study shows that the formation of scoria cones on a terrain with a marked slope (>10°) has profound impacts on the eruption dynamics and related hazards due to its effect on cone stability and ash erosion. It also evidences the erosive effect of syn-eruptive rain on fine-grained tephra, especially when deposited on a slope. Finally, it reveals the complex magmatic processes that may occur in the shallow plumbing system of monogenetic andesitic volcanoes, which could be particularly important in inland areas of continental arcs.

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The eruptive history of the Pátzcuaro Lake area in the Michoacán Guanajuato Volcanic Field, central México: Field mapping, C-14 and 40Ar/39Ar geochronology

Cited by 28 publications

References 97 publications

Effusive Monogenetic Volcanism

Effusive Monogenetic Volcanism

Detailed geomorphology of debris avalanches of El Estribo volcanic complex (Central Mexico)

Las Cabras volcano, Michoacán-Guanajuato Volcanic Field, México: Topographic, climatic, and shallow magmatic controls on scoria cone eruptions

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