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Glaciovolcanism at Volcán Sollipulli, southern Chile: lithofacies analysis and interpretation

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Glaciovolcanism at Volcán Sollipulli, southern Chile: lithofacies analysis and interpretation. / Lachowycz, Stefan M.; Pyle, David; Gilbert, Jennifer Susan et al.
In: Journal of Volcanology and Geothermal Research, Vol. 303, 15.09.2015, p. 59-78.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Lachowycz, SM, Pyle, D, Gilbert, JS, Mather, T, Mee, K, Naranjo, JA & Hobbs, L 2015, 'Glaciovolcanism at Volcán Sollipulli, southern Chile: lithofacies analysis and interpretation', Journal of Volcanology and Geothermal Research, vol. 303, pp. 59-78. https://doi.org/10.1016/j.jvolgeores.2015.06.021

APA

Lachowycz, S. M., Pyle, D., Gilbert, J. S., Mather, T., Mee, K., Naranjo, J. A., & Hobbs, L. (2015). Glaciovolcanism at Volcán Sollipulli, southern Chile: lithofacies analysis and interpretation. Journal of Volcanology and Geothermal Research, 303, 59-78. https://doi.org/10.1016/j.jvolgeores.2015.06.021

Vancouver

Lachowycz SM, Pyle D, Gilbert JS, Mather T, Mee K, Naranjo JA et al. Glaciovolcanism at Volcán Sollipulli, southern Chile: lithofacies analysis and interpretation. Journal of Volcanology and Geothermal Research. 2015 Sept 15;303:59-78. Epub 2015 Jul 3. doi: 10.1016/j.jvolgeores.2015.06.021

Author

Lachowycz, Stefan M. ; Pyle, David ; Gilbert, Jennifer Susan et al. / Glaciovolcanism at Volcán Sollipulli, southern Chile : lithofacies analysis and interpretation. In: Journal of Volcanology and Geothermal Research. 2015 ; Vol. 303. pp. 59-78.

Bibtex

@article{892919d338114a2099b6d1ab533032c9,
title = "Glaciovolcanism at Volc{\'a}n Sollipulli, southern Chile: lithofacies analysis and interpretation",
abstract = "Magma–ice–meltwater interactions produce diverse landforms and lithofacies, reflecting the multitude of factors that influence glaciovolcanism, including both magmatic (e.g., composition, eruption rate) and glacial (e.g., ice thickness, thermal regime) conditions. This is exemplified by the walls of the partly ice-filled summit caldera of Volc{\'a}n Sollipulli, a stratovolcano in southern Chile, which include lithofacies from eruptions of a wide range of magma compositions beneath or in contact with ice. Here we analyse these lithofacies and hence propose new interpretations of the eruptive and glacial history of Sollipulli. The facies include a thick, laterally extensive sequence of fragmental glaciovolcanic deposits, comprising massive, mafic lava pillow-bearing hyaloclastite overlain by sills and then hyaloclastic debris flow deposits (similar to Dalsheidi-type sequences). The distribution and thickness of these units indicate an unusual abundance of magma–meltwater interaction for an arc stratovolcano in temperate latitudes, perhaps due to eruptions beneath a thick ice cap. Coherent lava coul{\'e}es, domes, lobes, and stacks of basaltic andesite–trachydacite composition are present around the top of the caldera rim; these display morphologies and fracture patterns on caldera-facing margins that indicate that the caldera was filled with ice when these lavas were erupted. The lithofacies characterised in this study demonstrate the diversity of glaciovolcanism that is possible at arc stratovolcanoes capped by temperate ice or with ice-filled calderas, and the potential for uncertainties in inference of the palaeoenvironmental conditions of their emplacement.",
author = "Lachowycz, {Stefan M.} and David Pyle and Gilbert, {Jennifer Susan} and Tamsin Mather and Katy Mee and Naranjo, {Jos{\'e} A.} and Laura Hobbs",
note = "{\textcopyright} 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).",
year = "2015",
month = sep,
day = "15",
doi = "10.1016/j.jvolgeores.2015.06.021",
language = "English",
volume = "303",
pages = "59--78",
journal = "Journal of Volcanology and Geothermal Research",
issn = "0377-0273",
publisher = "Elsevier Science B.V.",

}

RIS

TY - JOUR

T1 - Glaciovolcanism at Volcán Sollipulli, southern Chile

T2 - lithofacies analysis and interpretation

AU - Lachowycz, Stefan M.

AU - Pyle, David

AU - Gilbert, Jennifer Susan

AU - Mather, Tamsin

AU - Mee, Katy

AU - Naranjo, José A.

AU - Hobbs, Laura

N1 - © 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

PY - 2015/9/15

Y1 - 2015/9/15

N2 - Magma–ice–meltwater interactions produce diverse landforms and lithofacies, reflecting the multitude of factors that influence glaciovolcanism, including both magmatic (e.g., composition, eruption rate) and glacial (e.g., ice thickness, thermal regime) conditions. This is exemplified by the walls of the partly ice-filled summit caldera of Volcán Sollipulli, a stratovolcano in southern Chile, which include lithofacies from eruptions of a wide range of magma compositions beneath or in contact with ice. Here we analyse these lithofacies and hence propose new interpretations of the eruptive and glacial history of Sollipulli. The facies include a thick, laterally extensive sequence of fragmental glaciovolcanic deposits, comprising massive, mafic lava pillow-bearing hyaloclastite overlain by sills and then hyaloclastic debris flow deposits (similar to Dalsheidi-type sequences). The distribution and thickness of these units indicate an unusual abundance of magma–meltwater interaction for an arc stratovolcano in temperate latitudes, perhaps due to eruptions beneath a thick ice cap. Coherent lava coulées, domes, lobes, and stacks of basaltic andesite–trachydacite composition are present around the top of the caldera rim; these display morphologies and fracture patterns on caldera-facing margins that indicate that the caldera was filled with ice when these lavas were erupted. The lithofacies characterised in this study demonstrate the diversity of glaciovolcanism that is possible at arc stratovolcanoes capped by temperate ice or with ice-filled calderas, and the potential for uncertainties in inference of the palaeoenvironmental conditions of their emplacement.

AB - Magma–ice–meltwater interactions produce diverse landforms and lithofacies, reflecting the multitude of factors that influence glaciovolcanism, including both magmatic (e.g., composition, eruption rate) and glacial (e.g., ice thickness, thermal regime) conditions. This is exemplified by the walls of the partly ice-filled summit caldera of Volcán Sollipulli, a stratovolcano in southern Chile, which include lithofacies from eruptions of a wide range of magma compositions beneath or in contact with ice. Here we analyse these lithofacies and hence propose new interpretations of the eruptive and glacial history of Sollipulli. The facies include a thick, laterally extensive sequence of fragmental glaciovolcanic deposits, comprising massive, mafic lava pillow-bearing hyaloclastite overlain by sills and then hyaloclastic debris flow deposits (similar to Dalsheidi-type sequences). The distribution and thickness of these units indicate an unusual abundance of magma–meltwater interaction for an arc stratovolcano in temperate latitudes, perhaps due to eruptions beneath a thick ice cap. Coherent lava coulées, domes, lobes, and stacks of basaltic andesite–trachydacite composition are present around the top of the caldera rim; these display morphologies and fracture patterns on caldera-facing margins that indicate that the caldera was filled with ice when these lavas were erupted. The lithofacies characterised in this study demonstrate the diversity of glaciovolcanism that is possible at arc stratovolcanoes capped by temperate ice or with ice-filled calderas, and the potential for uncertainties in inference of the palaeoenvironmental conditions of their emplacement.

U2 - 10.1016/j.jvolgeores.2015.06.021

DO - 10.1016/j.jvolgeores.2015.06.021

M3 - Journal article

VL - 303

SP - 59

EP - 78

JO - Journal of Volcanology and Geothermal Research

JF - Journal of Volcanology and Geothermal Research

SN - 0377-0273

ER -