Volcano morphology as an indicator of stress orientation in the Java Volcanic Arc, Indonesia

Marliyani, Gayatri Indah; Helmi, Hurien; Arrowsmith, J Ramón; Clarke, A. B.

doi:10.1016/j.jvolgeores.2020.106912

Cited by 23 publications

(26 citation statements)

References 46 publications

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“…Both vent alignment and the basal elongation of monogenetic volcanoes/maar craters are parallel to the maximum horizontal stress (σHmax) and perpendicular to the minimum horizontal stress (σHmin), as suggested by several studies (Fig. 3C; e.g., Nakamura et al, 1977;Tibaldi, 1995;Lara et al, 2006;Haag et al, 2019;Marliyani et al, 2020). Monogenetic cones may also be slight oblique to the main feeding system, suggesting an en echelon distribution (Fig.…”

Section: Submitted To Geomorphologysupporting

confidence: 52%

“…Changes in the stress orientation using volcano morphology have been recently reported in the Java Volcanic Arc (Marliyani et al, 2020). The authors associated the progressive changes in σHmax to relative plate convergence and upper plate structure, while abrupt changes are linked to the presence of preexisting structures, as well as to interference of polygenetic volcanoes (Marliyani et al, 2020).…”

Section: Submitted To Geomorphologymentioning

confidence: 98%

“…The determination of stress state can be inferred from the spatial distribution of monogenetic vents and their main attributes (Fig. 3;Tibaldi, 1995;Paulsen and Wilson, 2010;Bonali et al, 2011;Le Corvec et al, 2013;Tadini et al, 2014;Haag et al, 2019;Marliyani et al, 2020;Morfulis et al, 2020). In this context, the surface distribution of monogenetic volcanoes and their elongation (Fig.…”

Section: Morpho-structural Analysismentioning

confidence: 99%

“…This suggests some common underlying control on the emplacement of the monogenetic cones in the study area. Therefore, this orientation can be used to infer the stress state (e.g., Le Corvec et al, 2013;Marliyani et al, 2020) in the CSVZ back-arc region, implying a maximum horizontal compressive stress (σHmax)…”

Section: Tectonic and Structural Implicationsmentioning

confidence: 99%

“…The morphology of monogenetic volcanoes and their spatial distribution reflect important parameters about the dynamic of the volcanic field and their tectonic controls (e.g., structural control and emplacement dynamics; Bemis and Ferencz, 2017). Several studies have shown that edifice morphology and spatial distribution can be used to identify relevant volcanological and tectonic processes, including eruption dynamics, structural and tectonic settings (Tibaldi, 1995;Kereszturi and Németh 2012a;Haag et al, 2019;Marliyani et al, 2020). In recent years the availability of high-resolution Digital Elevation Models (DEMs) and satellite imagery fostered the remote characterization of monogenetic volcanoes.…”

Section: Introductionmentioning

confidence: 99%

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Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina)

Santos¹,

Sommer²,

Haag³

et al. 2022

Preprint

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Monogenetic volcanoes are among the most common volcanic landforms on Earth. The morphology and distribution of small volcanoes can provide important information about eruption dynamics and tectonics. The Southern Volcanic Zone of the Andes (CSVZ) comprises one of the most active magmatic regions on Earth. Characterized by the presence of polygenetic volcanoes and calderas in a complex tectonic setting, this region also hosts hundreds of small, back-arc monogenetic volcanoes. In this contribution, we apply a Geographic Information System (GIS) that combines imagery data and digital elevation models to establish the first comprehensive dataset of monogenetic volcanoes in the CSVZ (38° to 40° S), exploring their eruption dynamics and relationship to tectonic and structural processes. Combining spatial analysis and geomorphological observations, we identify the presence of 356 monogenetic volcanoes distributed into nine clusters, now grouped in the Zapala Volcanic Field (ZVF). The ZVF is marked by the predominance of cinder cones (80%) followed by phreatomagmatic volcanoes (20%), suggesting some influence of external water in the eruption dynamics. Generally, monogenetic vents present a clear association with local and regional lineaments, suggesting a strong structural control on the occurrence of the monogenetic deposits. The higher vent densities are observed in the southern Loncopué Though, an important extensional feature related to tearing of the subducted Nazca plate underneath the South American Plate. Morphometric parameters of cinder cones indicate variable stress orientations in the CSVZ that possibly result from the oblique tectonics in the region. From north to south, the maximum principal stress rotates from NE-SW to E-W and becomes progressively less constrained as it distances from the current magmatic arc. Based on the relative ages, we map the evolution of monogenetic volcanism through time. Our results suggest a waning in the monogenetic activity in ZVF over time. When compared to monogenetic fields in the Central Andes, the ZVF is marked by higher vent densities and number of phreatomagmatic landforms, with the absence of lava domes. This ultimately reflects the contrasting crustal structure and climate conditions of these two regions.

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