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Rhyolite eruptions under ice:an interconnected web of volatiles, pressure, degassing, and eruptive behaviour

Owen, Jacqueline and Tuffen, Hugh and McGarvie, DW (2011) Rhyolite eruptions under ice:an interconnected web of volatiles, pressure, degassing, and eruptive behaviour. In: .

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Abstract

Subglacial rhyolite volcanoes demonstrate an intricate, complex, and poorly-understood connectivity between volatiles, pressure, degassing, and eruptive behaviour. We examine these relationships at different subglacial rhyolitic volcanoes at Torfajökull, South Iceland. Evidence suggests that the eruptive behaviour of these volcanoes appears to be controlled primarily by the variations in initial volatile content, degassing behaviour, and confining pressure. However it has become evident that the final volatile content is not just a reflection of pressure but also of complex degassing processes and eruptive behaviour. Consequently, there remains a substantial challenge in reconstructing the palaeo-ice thicknesses of subglacial rhyolitic eruptions. We report our progress on meeting this challenge.

Item Type: Conference or Workshop Item (Poster)
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 52163
Deposited By: ep_importer_pure
Deposited On: 20 Dec 2011 11:33
Refereed?: No
Published?: Published
Last Modified: 10 Apr 2014 02:50
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/52163

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