The relationship between Cenozoic shallow igneous bodies and thrust systems of the mountain front of the Cordillera Principal, Mendoza province, Argentina

Araujo, Vanesa Soledad; Frisicale, María Cristina; Sánchez, Natalia Paola; Turienzo, Martin Miguel; Lebinson, Fernando Oscar; Dimieri, Luis Vicente

doi:10.1016/j.jsames.2019.03.027

Cited by 10 publications

(12 citation statements)

References 58 publications

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“…Other intrusions of the La Brea Fm. are identified as massive laccolithic bodies, strengthening this hypothesis (Araujo et al, 2019;Dessanti, 1959).…”

Section: Of the Andesite Bodymentioning

confidence: 77%

“…The sedimentary deposits associated with this foreland phase are the continental deposits of the late Cretaceous Neuquén Gr. and the Top Cretaceous-Palaeocene Malargüe Gr., this later being exposed in the Cerro Alquitrán area (Figure 2) (Araujo et al, 2019;Dessanti, 1959). The latest formations present in the area are Neogene syn-orogenic deposits, which partly consist of volcaniclastic products (Figure 2) (Combina & Nullo, 2011).…”

Section: Geological Settingmentioning

confidence: 99%

“…sub-volcanic intrusions that include Cerro Alquitrán, Cerro Los Buitres and Cerro Laguna Amarga (Figure 2) (Araujo et al, 2019;Nullo et al, 2002). The name "La Brea" means "tar" in Spanish, highlighting the regional link between the subvolcanic intrusions and the bituminous fluid migration.…”

Section: Geological Settingmentioning

confidence: 99%

“…were emplaced shortly before and during the development of the compressional tectonic deformation (Baldauf et al, 1997; Combina & Nullo, 2011; Giambiagi et al, 2008; Nullo et al, 2002). Araujo et al (2019) suggest that the transport and emplacement of magma might have been controlled by thrust faults.…”

Section: Geological Settingmentioning

confidence: 99%

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The long‐term legacy of subvolcanic intrusions on fluid migration in sedimentary basins: The Cerro Alquitrán case study, northern Neuquén Basin, Argentina

Galland

Villar²,

Mescua

et al. 2023

Basin Research

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Cooling subvolcanic igneous intrusions are known to have a substantial impact on fluid flow in the shallow Earth's crust, for example activation of geothermal systems, circulation of mineralized fluids in ore deposits, fast maturation of organic matter in sedimentary rocks and the potential release of large volumes of greenhouse gases, which have triggered mass extinctions during the Earth's history. However, the long‐term post‐cooling legacy of subvolcanic intrusions on fluid flow received much less attention. Here we describe a demonstrative geological example in the Andean foothills, Argentina, showing that igneous intrusions have long‐term effects on fluid flow after their emplacement and cooling. The case study is a ca. 11‐million‐year‐old, eroded subvolcanic conduit, at the rims of which large volumes of bitumen are naturally seeping out on the Earth's surface. This contribution highlights that intense syn‐emplacement fracturing of the magma has created high‐permeability pathways that affect the regional fluid circulations, even millions of years after cooling. Our observations reveal how extinct subvolcanic intrusions have long‐term consequences on subsurface fluid circulations, which need to be accounted for in the exploration of geothermal energy, drinkable groundwater, hydrocarbons and CO2 sequestration in volcanic basins and regions hosting ancient shallow magma intrusions.

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“…Other intrusions of the La Brea Fm. are identified as massive laccolithic bodies, strengthening this hypothesis (Araujo et al, 2019;Dessanti, 1959).…”

Section: Of the Andesite Bodymentioning

confidence: 77%

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

See 2 more Smart Citations

The long‐term legacy of subvolcanic intrusions on fluid migration in sedimentary basins: The Cerro Alquitrán case study, northern Neuquén Basin, Argentina

Galland

Villar²,

Mescua

et al. 2023

Basin Research

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“…The compressive stresses that generate thrust faults are not conducive for melt flow and may inhibit the upward motion of large volumes of magma. However, faults themselves can serve as relatively high permeability conduits that facilitate melt ascent, as the study of terrestrial volcanic arcs has shown (Araujo et al., 2019; Ferré et al., 2012; Lupi et al., 2022; Musumeci et al., 2005). Moreover, the increased strain rate caused by deformation before and after a seism may allow small amounts of melt to rise along grain boundaries past the nominal permeability barrier depth.…”

Section: Discussionmentioning

confidence: 99%

Barriers to Melt Ascent in the Lithosphere of Io With Applications to Heat Pipe Formation

Schools

Montési

2022

JGR Planets

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Melt from the presumed magma ocean in Io's interior reaches the surface at well‐documented paterae and hotspots. To do so, melt needs to cross the thermal lithosphere of Io, even though, as it loses heat, it may stall inside the lithosphere. Permeability barriers form when melt crystallization is rapid and further prevents melt ascent unless a different melt transport mechanism develops. The heat pipe model of Io provides such a mechanism, allowing the melt to travel from the molten asthenosphere to the surface at discrete points. However, unless these heat pipes are billions of years old and constant in both location and flux, melt must ascend through the cold lithosphere at other locations and form new melt conduits. We model here the crystallization sequence of melts as they rise through the lithosphere of Io and determine under what conditions a permeability barrier may form. The barrier is generally deep, but can be elevated 100s of meters to several kilometers in areas of high strain rate or low resurfacing rate. We propose a feedback mechanism where regions closer to a heat pipe experience a higher resurfacing rate, driving the permeability barrier deeper, while regions away from a heat pipe experience a lower resurfacing rate allowing the permeability barrier to rise. A new heat pipe may develop in these regions where the melt is focused by variations of permeability barrier elevation while the old heat pipe closes, potentially leading to changes of heat pipe location over a time scale of 100,000 years.

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Geodynamic controls on magmatic arc migration and quiescence

Gianni

Luján

2021

Earth-Science Reviews

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The relationship between Cenozoic shallow igneous bodies and thrust systems of the mountain front of the Cordillera Principal, Mendoza province, Argentina

Cited by 10 publications

References 58 publications

The long‐term legacy of subvolcanic intrusions on fluid migration in sedimentary basins: The Cerro Alquitrán case study, northern Neuquén Basin, Argentina

The long‐term legacy of subvolcanic intrusions on fluid migration in sedimentary basins: The Cerro Alquitrán case study, northern Neuquén Basin, Argentina

Barriers to Melt Ascent in the Lithosphere of Io With Applications to Heat Pipe Formation

Geodynamic controls on magmatic arc migration and quiescence

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