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Dr Dave McGarvie

Dr Dave McGarvie

Senior Lecturer, Staff Tutor in Science

The Open University Faculty of Science Department of Environment, Earth & Ecosystems

+44 (0) 131 549 7140
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Profile

Key information and contact details:

Mobile contact number: 00 44 77 909 84189

email contact: dave.mcgarvie@open.ac.uk

Senior Lecturer with the Volcano Dynamics Group, Department of Environment, Earth and Ecosystems.

Science Staff Tutor working at the OU's national centre in Edinburgh.

Twitter @subglacial

Skype: subglacial

Google Scholar profile http://scholar.google.co.uk/citations?hl=en&user=ll3nIt0AAAAJ&view_op=list_works&is_public_preview=1

 

 

My research uses volcanology to understand environmental and earth processes. Four examples:

  1. Explosive rhyolite eruptions from Iceland's largest volcanoes to determine the cause(s) of explosivity and to to determine the local impacts (e.g. flooding) and far-flung impacts (e.g. airspace closure due to ash clouds). OU PhD project starting October 2013.
  2. Ar-Ar dating of subglacial volcanoes to provide information on thicknesses of Pleistocene ice sheets. (Manchester-OU PhD project started October 2012.)
  3. Re-investigating formation of polygonal fracture formation in lavas (i.e. columnar jointing) to re-evaluate formation mechanisms, and to assess their value as an environmental indicator. Includes new investigations of entablature and pseudopillow fracture systems. OU PhD project started October 2009.
  4. Volatile studies of subglacial rhyolites to better understand the mechanisms driving explosive eruptions (Lancaster-OU PhD started 2009).

 

Other research highlights:

  1. I have started a project on a poorly-known Chilean volcano (Quetrupillan) with a view to exploring variations in ice thickness during the volcano's evolution.
  2. I was heavily involved with the media during the 2010 Eyafjallajokull and 2011 Grimsvotn eruptions, and participated on a scientific expedition to the Grimsvotn crater just two months after the eruption ended.
  3. I was part of a team that carried out the first detailed study (including precise K-Ar dating) of a former ice-covered Icelandic central volcano (Askja).
  4. In June 2012 I walked into the Valley of Ten Thousand Smokes in Alaska exactly one century after start of the largest eruption of the 20th century occurred there.


Recent peer-reviewed papers:

  1. Graettinger A, Skilling I, and McGarvie DW (in press). Subaqueous basaltic magmatic explosions trigger phreatomagmatism: a case study from Askja, Iceland. Journal of Volcanology and Geothermal Research.
  2. Owen J, Tuffen H and McGarvie DW (2013). Pre-eruptive volatile content, degassing paths and depressurisation explaining the transition in style at the subglacial rhyolitic eruption of Dalakvísl, South Iceland. Journal of Volcanology and Geothermal Research.
  3. Owen J, Tuffen H and McGarvie DW. (2012). Explosive subglacial rhyolitic eruptions in Iceland are fuelled by high magmatic H2O and closed-system degassing. Geology
  4. Forbes AES, Blake S, McGarvie DW and Tuffen H. (2012). Pseudopillow fracture systems in lavas: Insights into cooling mechanisms and environments from lava flow fractures. Journal of Volcanology and Geothermal Research.
  5. Owen J, Tuffen H and McGarvie DW. (2012). Using dissolved H2O in rhyolitic glasses to estimate palaeo-ice thickness during a subglacial eruption at Bláhnúkur (Torfajökull, Iceland). Bulletin of Volcanology.
  6. Graettinger AH, Skilling IP, McGarvie DW and Höskuldsson A. (2012). Intrusion of basalt into frozen sediments and generation of Coherent-Margined Volcaniclastic Dikes (CMVDs). Journal of Volcanology and Geothermal Research, 217 pp. 30–38.
  7. Stevenson JA. Gilbert JS, McGarvie DW and Smellie JL. (2011). Explosive rhyolite tuya formation: classic examples from Kerlingarfjöll, Iceland. Quaternary Science Reviews, 30(1-2), pp. 192–209.

Qualifications

  • 1985. PhD. Volcanology and Petrology of Mixed Magmas and Rhyolites from the Torfajokull Volcano, Iceland. University of Lancaster.

  • 1981. BSc (Hons), upper second class, University of Lancaster. Environmental Sciences.

  • 1992. Postgraduate Certificate in Tertiary-Level Teaching Methods. The Robert Gordon University, Aberdeen.

 

Teaching Interests

Note that these are current teaching interests and responsibilities only:

  • Line manager of 52 part-time teaching staff (Associate Lecturers).

  • Chair - S390 (Science Project Module). Level 3.

  • Overall responsibility for tutors and students on SXG390 (Geohazards). Level 3.

  • Chair (Award Board) - S339 Understanding the Continents. Level 3.

Research Interests

Volcanic eruptions into glaciers (Iceland and Chile).

Evolution of Icelandic volcanic systems (volcanological and geochemical).

Explosive rhyolite eruptions.

Use of eReaders in remote learning.

Current Research Projects

  1. Volcano-ice interactions at the Askja volcano, Iceland.
  2. Volcano-ice interactions at the Öraefajökull volcano, Iceland.
  3. Volcano-ice interactions at Quetrupillan volcano, Chile.
  4. Development of cooling fractures and structures in lavas erupted into ice, snow, and water.
  5. Evolution of the Torfajökull central volcano, south-central Iceland.
  6. Gravity study of the Northern Rift Zone, Iceland.

 

PhD students:

2012-2016

Katy Street (based at Manchester). The timing of volcano-ice eruptions and deglaciation in Iceland. Other Supervisors: Dr Ray Burgess (lead) and Dr Simon Brocklehurst (both Manchester).

2010-2014

Sion Hughes (based at the OU). Gravity studies of the Northern Rift Zone, Iceland. Other supervisors: Professor Hazel Rymer (lead) and Dr Steve Blake (both OU).

2009-2013

Anne Forbes (based at the OU). When lavas meet ice, snow, and water – volcanic processes in glacial environments. Other supervisors: Dr Steve Blake (lead, OU) and Dr Hugh Tuffen (Lancaster).

2008-2012

Jacqui Owen (based at Lancaster University). Volatiles in subglacial eruptions. Other supervisor: Dr Hugh Tuffen (lead, Lancaster).

 

** Completed PhDs below, current PhD students above **

2009-2012

Alison Graettinger (based at University of Pittsburgh, USA). Building Ice-Age Askja. Awarded 2012. Other supervisor: Dr Ian Skilling (lead, Pittsburgh).

2007-2011

Angela Walker (based at Manchester University). Glaciovolcanism at Öraefajökull stratovolcano, Iceland – a window into Quaternary climate change. Awarded 2011. Other supervisors: Dr Ray Burgess (lead, Manchester), Dr John Smellie (British Antarctic Survey).

2006-2010

Patricia Clay. 40Ar/39Ar dating of young volcanic rocks: Arcane isotopes and how to unravel them’. Awarded 2010. Other supervisors: Dr Sarah Sherlock (lead), Professor Simon Kelley, and Dr Tiff Barry (all OU).

2001-2005

Dr Stephanie Flude (based at University of Manchester). Timing and Timescales of Rhyolite Eruptions in Iceland. Awarded 2005. Other supervisor: Dr Ray Burgess (lead, Manchester).

2001-2005

Dr John Stevenson (based at Lancaster University). Ice-Magma Interactions during Subglacial Rhyolite Eruptions. Awarded 2005. Other supervisors: Dr John Smellie (British Antarctic Survey). Dr Jennie Gilbert (Lancaster).

1998-2002

Dr Hugh Tuffen (based at Lancaster University). Subglacial Rhyolite Volcanism at Torfajökull, Iceland. Awarded 2002. Other supervisors: Professor Harry Pinkerton and Dr Jennie Gilbert (both Lancaster).

 

Publications

Book Chapter
Tuffen, H.; McGarvie, D.W.; Gilbert, J.S. and Pinkerton, H. (2002). Physical volcanology of a subglacial-to-emergent rhyolitic tuya at Rauðufossafjöll, Torfajökull, Iceland. In: Smellie, J.L. and Chapman, M.G. eds. Volcano-ice interaction on Earth and Mars. Geological Society special publication (London, 202 (202). London, UK: The Geological Society, pp. 213–236.
Journal Article
Graettinger, A. H.; Ellis, M. K.; Skilling, I. P.; Reath, K.; Ramsey, M. S.; Lee, R. J.; Hughes, C. G. and McGarvie, D. W. (2013). Remote sensing and geologic mapping of glaciovolcanic deposits in the region surrounding Askja (Dyngjufjöll) volcano, Iceland. International Journal of Remote Sensing, 34(20), pp. 7178–7198.
Graettinger, Alison H.; Skilling, Ian; McGarvie, Dave and Höskuldsson, Ármann (2013). Subaqueous basaltic magmatic explosions trigger phreatomagmatism: a case study from Askja, Iceland. Journal of Volcanology and Geothermal Research, 264 pp. 17–35.
Owen, Jacqueline; Tuffen, Hugh and McGarvie, Dave (2013). Explosive subglacial rhyolitic eruptions in Iceland are fuelled by high magmatic H2O and closed-system degassing. Geology, 41(2), pp. 251–254.
Forbes, Anne; Blake, S.; McGarvie, D. W. and Tuffen, H. (2012). Pseudopillow fracture systems in lavas: insights into cooling mechanisms and environments from lava flow fractures. Journal of Volcanology and Geothermal Research, 245-6 pp. 68–80.
Owen, Jacqueline; Tuffen, Hugh and McGarvie, Dave (2012). Using dissolved H2O in rhyolitic glasses to estimate palaeo-ice thickness during a subglacial eruption at Bláhnúkur(Torfajökull, Iceland). Bulletin of Volcanology, 74(6), pp. 1355–1378.
Graettinger, A. H.; Skilling, I. P.; McGarvie, D. and Höskuldsson, A. (2012). Intrusion of basalt into frozen sediments and generation of Coherent-Margined Volcaniclastic Dikes (CMVDs). Journal of Volcanology and Geothermal Research, 217 pp. 30–38.
Flude, Stephanie; McGarvie, David W.; Burgess, Ray and Tindle, Andrew G. (2010). Rhyolites at Kerlingarfjöll, Iceland: The evolution and lifespan of silicic central volcanoes. Bulletin of Volcanology, 72(5), pp. 523–528.
Stevenson, John A.; Gilbert, Jennie S.; McGarvie, David W. and Smellie, John L. (2010). Explosive rhyolite tuya formation: classic examples from Kerlingarfjöll, Iceland. Quaternary Science Reviews, 30(1-2), pp. 192–209.
Mee, Katy; Gilbert, Jennie S.; McGarvie, David W.; Naranjo, José A. and Pringle, Malcolm S. (2009). Palaeoenvironment reconstruction, volcanic evolution and geochronology of the Cerro Blanco subcomplex, Nevados de Chillán volcanic complex, central Chile. Bulletin of Volcanology, 71(8), pp. 933–952.
Stevenson, John A.; Smellie, John L.; McGarvie, David W.; Gilbert, Jennie S. and Cameron, Barry I. (2009). Subglacial intermediate volcanism at Kerlingarfjöll, Iceland: magma–water interactions beneath thick ice. Journal of Volcanology and Geothermal Research, 185(4), pp. 337–351.
McGarvie, Dave (2009). Rhyolitic volcano–ice interactions in Iceland. Journal of Volcanology and Geothermal Research, 185(4), pp. 367–389.
Flude, Stephanie; Burgess, Ray and McGarvie, Dave (2008). Silicic volcanism at Ljósufjöll, Iceland: insights into evolution and eruptive history from Ar–Ar dating. Journal of Volcanology and Geothermal Research, 169(3-4), pp. 154–175.
Tuffen, H.; McGarvie, D. W.; Pinkerton, H.; Gilbert, J. S. and Brooker, R. A. (2008). An explosive–intrusive subglacial rhyolite eruption at Dalakvísl, Torfajökull, Iceland. Bulletin of Volcanology, 70(7), pp. 841–860.
McGarvie, D. W.; Stevenson, J. A.; Burgess, R.; Tuffen, H. and Tindle, A. G. (2007). Volcano–ice interactions at Prestahnúkur, Iceland: rhyolite eruption during the last interglacial–glacial transition. Annals of Glaciology, 45(1), pp. 38–47.
Tuffen, H.; McGarvie, D. W. and Gilbert, J. S. (2007). Will subglacial rhyolite eruptions be explosive or intrusive? Some insights from analytical models. Annals of Glaciology, 45(1), pp. 87–94.
McGarvie, D.W.; Stevenson, J. A.; Burgess, R. and Tindle, A. G. (2007). Volcano-ice interactions at Prestahnúkur, Iceland: rhyolite eruption during the last interglacial-glacial transition. Annals of Glaciology, 45(1), pp. 38–47.
Stevenson, John A.; McGarvie, David W.; Smellie, John L. and Gilbert, Jennie S. (2006). Subglacial and ice-contact volcanism at the Öraefajökull stratovolcano, Iceland. Bulletin of Volcanology, 68(7-8), pp. 737–752.
McGarvie, D. W.; Burgess, R.; Tindle, A. G.; Tuffen, H. and Stevenson, J. A. (2006). Pleistocene rhyolitic volcanism at the Torkfajökull central volcano, Iceland: eruption ages, ice-volcano interactions, and geochemical evolution. Jökull, 56 pp. 57–75.
McGarvie, Dave W.; Burgess, Raymond; Tindle, Andrew G.; Tuffen , Hugh and Stevenson, John A. (2006). Pleistocene rhyolitic volcanism at Torfajökull, Iceland: eruption ages, glaciovolcanism, and geochemical evolution. Jökull, 56 pp. 57–75.
Tuffen, H.; Pinkerton, H.; McGarvie, Dave and Gilbert, J.S. (2002). Melting of the glacier base during a small-volume subglacial rhyolite eruption: evidence from Bláhnúkur, Iceland. Sedimentary Geology, 149(1-3), pp. 183–198.
Tuffen, Hugh; Gilbert, Jennie and McGarvie, Dave (2001). Products of an effusive subglacial rhyolite eruption: Bláhnúkur, Torfajökull, Iceland. Bulletin of Volcanology, 63(2-3), pp. 179–190.

Other Interests

Mountain-biking: Scotland, Yorkshire Dales, Lake District, Wales, and the Alps.

Building mountain-bike trails.

Hiking.

Photography.

Pike fishing.

last updated 27-May-2013