Walker100

30 Sept 2026, 08:00 → 2 Oct 2026, 18:00 Atlantic/Reykjavik

Hátíðarsalur (Frystihúsið)

Þorvaldur Þórðarson (University of Iceland)

"Walker100" is a mini-conference honoring the late George P. L. Walker, a world renowned volcanologist, on the occasion of his 100th birthday, on March 2^nd 2026. 

We welcome contributions from all sub-diciplines of Volcanology with an emphasis on, or link  to, the Neogene in Iceland and/or the North Atlantic Igneous Province (see preliminary schedule under Scientific Programme). We will do our best to accommodate a large number of oral and poster presentations for this one-day meeting.

We look forward to recieving you in Breiðdalsvík,  Eastern Iceland.

 

UI Research Centre - Breiðdalsvík

Wednesday 30 September

08:00 → 17:00 Field trips: Pre-Conference field trip through the northern fjords (north of Breiðdalsvík). The subaerial succession: the silicic volcanism of the central volcanoes versus the plateau basalt lava sequence from Reyðarfjörður to Breiðdalur.

18:00 → 19:30 Ice-Breaker

Venue TBA

Thursday 1 October

07:50 → 09:40 Plenary lectures

Plenary lecture

07:50 → 08:00 Welcome

Speaker: Jóna Árný Þórðardóttir (Fjarðabyggð)

08:00 → 08:50 The life and career of George Walker, volcanologist (1926 to 2006)

Speaker: Steve Self (University of California)

09:00 → 09:30 Volcanism, evolution and structure of Iceland - current problems and ways forward

Speaker: Gillian Foulger (Durham University)

09:40 → 10:00 Coffee break

Coffee break

10:00 → 10:20 George Walker and the flood basalt stratigraphy of Eastern Iceland

Speaker: Birgir Vilhelm Óskarsson (Natural Science Institute of Iceland)

10:00 → 12:20 Scientific Program: Iceland as a laboratory for physical volcanology studies

10:20 → 10:40 Stratigraphic mapping in a pre-modelled field by the grand master - a word of warning.

Speaker: Gudmundur Omar Fridleifsson (Geology and Geothermal Consultant)

10:40 → 11:00 The SECRET volcanoes of South-East Iceland – mapping plutonic-volcanic connections between Slaufrudalur pluton and volcanic facies

Speaker: Robert Alexander Askew (Icelandic Institute of Natural Science)

11:00 → 11:20 Magma flow durations in flood basalt dikes, and machine learning inference of genetic chemical relationships between adjacent members of the Columbia River Flood Basalts, USA

Speaker: Leif Karlstrom (University of Oregon)

11:20 → 11:40 Lava flow architecture and vent distribution of the Dabbahu central volcano and Manda Hararo fissure swarm in Ethiopia

Speaker: Charlotte Vye-Brown (British Geological Survey)

11:40 → 12:00 The Sveinar Cone Rows Are Not a Single Eruption: New Tephrochronological Evidence Reveals a Multiphase Holocene History, NE Iceland

Speaker: Diana Brum da Silveira (University of Iceland)

12:00 → 12:20 The Leiðólfsfell Rootless Cone Group Tephra: Insights into Sustained Rootless Eruptions

Speaker: Glen L'Estrange (University of Iceland)

12:20 → 13:00 Lunch and Posters

13:00 → 13:20 Petrology of Neogene intrusions and volcanoes in eastern Iceland

Speaker: Christian Tegner (Aarhus University)

13:00 → 15:00 Scientific Program: Iceland and similar regions as a laboratory for magmatic studies

13:20 → 13:40 Temporal and Structural Interactions Between Silicic Volcanic Centers and the Slaufrudalur Granitic Pluton, Southeast Iceland.

Speaker: Catherine Gallagher (NordVulk, University of Iceland)

13:40 → 14:00 The petrological architecture of Ingólfshöfði and its relationship to Öræfajökull (Iceland)

Speaker: Helga Torfadóttir (University of Iceland)

14:00 → 14:20 Hydrothermally Altered Sheeted Dikes Recovered From IDDP-2 Drill Hole, Reykjanes, Iceland

Speaker: Robert Zierenberg (University of California Davis)

14:20 → 14:40 The Drill Core Library of the Natural Science Institute of Iceland

Speaker: María Helga Guðmundsdóttir (Natural Science Institute of Iceland)

14:40 → 15:00 The magmatism of 2021-23 Fagradalsfjall Fires, Reykjanes Volcanic Belt, Iceland

Speaker: Thor Thordarson (University of Iceland)

15:00 → 15:20 Coffee break

Coffee break

15:20 → 15:40 Incremental assembly of Iceland’s largest granite pluton - new insights on structure and setting of the Slaufrudalur pluton

Speaker: Steffi Burchardt (Uppsala University)

15:20 → 17:20 Scientific Program: Iceland and NAIP as a laboratory for structural studies

15:40 → 16:00 The enigmatic Deep Conductive Layer in the Icelandic Crust

Speaker: Knútur Árnason (Reykjavík Academy)

16:00 → 16:20 Erosion in East Iceland and continental shelf formation

Speaker: Ármann Höskuldsson (University of Iceland)

16:20 → 16:40 Iceland as a field laboratory for understanding Vøring volcanic margin seismic and borehole data

Speaker: Sverre Planke et al (University of Oslo/Volcanic Basin Energy Research)

16:40 → 17:00 Continental Crust under the Greenland-Iceland-Faroe Ridge

Speaker: Gillian Foulger (Durham University)

17:00 → 17:20 Expanding the Hengill Resource: Deep and Step-Out Exploration Beyond the Known Reservoir

Speaker: Dario Ingi Di Rienzo (Orkuveitan)

17:20 → 18:00 Panel discussion

18:00 → 18:04 Iceland’s 250.000 geological maps: Digitisation and modernisation of a legacy dataset for a modern dataset

Speaker: Robert Alexander Askew (Icelandic Institute of Natural Science)

18:00 → 19:00 Poster Session

18:04 → 18:08 Beyond MFCI: Modelling Jet and Plume Dynamics in Wet Basaltic Eruptions

Speaker: Raghavendra Kshirsagar (University of Iceland)

18:08 → 18:12 Investigation of the origin of Unit 6 and associated lapilli train from the 937-940 CE Eldgjá eruption, Iceland

Speaker: Weronika Mazur (University of Iceland)

18:12 → 18:16 The 937-40 CE Eldgjá flood lava eruption, Iceland: Explosive activity and magma composition

Speaker: Thor Thordarson (University of Iceland)

18:16 → 18:20 Emplacement of mafic lava flow fields

Speaker: Thor Thordarson (University of Iceland)

18:20 → 18:23 Should I stay or should I blow? Emplacement and eruption of a shallow-crustal granitic magma reservoir – the Reyđarártindur pluton, Southeast Iceland

Speaker: Steffi Burchardt (Uppsala University)

18:24 → 18:27 New geochronological evidence of over 8 Myr of persistent silicic volcanism in Southeast Iceland

Speaker: Catherine Gallagher (University of Iceland)

18:28 → 18:31 Torfufell Through Time: The Evolution of a Late Miocene Central Volcano in North Iceland

Speaker: Sigurveig Árnadóttir (Norðurorka)

18:32 → 18:35 Streitishvarf composite dyke: A field case study of mixing of mafic and silicic magmas in subvolcanic intrusions in Iceland

Speaker: Robert Alexander Askew (Icelandic Institute of Natural Science)

18:36 → 18:39 Mix or Mingle?: Investigating textural features of intrusive bimodal magmatic systems using case studies from the North Atlantic Igneous Province

Speaker: Frankie Butler (University of Cambridge)

18:40 → 18:43 Iron Partitioning During Garnet Fractionation of Basaltic Magmas

Speaker: Jackie Li (University of Michigan)

18:44 → 18:47 The timing of deformation associated with the emplacement of the Sandfell laccolith

Speaker: Steffi Burchardt (Uppsala University)

18:48 → 18:51 Húsavík–Flatey Fault: Strike-Slip Stuck Between Rifts

Speaker: Yaasameen Shalla (University of Iceland)

18:52 → 18:54 Deformation related to the emplacement of the Eystrahorn complex, East-Iceland

Speaker: Raphaël Rougemont (Uppsala University)

18:54 → 18:56 Tectono-Volcanic Research in Iceland – the next 100 years framed by the last 5

Speaker: Gregory Paul De Pascale (University of Iceland)

18:56 → 18:58 Modelling the progressive deformation of transfer zones, application to the Reykjanes Peninsula, Iceland

Speaker: Barache Marieke (Institut de Physique du Globe de Paris)

18:58 → 19:00 Role of Inherited Structures on Incremental Emplacement of Midcrustal Lopolith-Like plutons: Insights from Mesozoic plutonism in South China

Speaker: Bo Wang (Nanjing University)

19:00 → 20:00 Break

20:00 → 22:00 Conference Dinner

Friday 2 October

08:00 → 17:00 Field trips: Post-Conference field trip through the southern fjords (south of Breiðdalsvík). The intrusion geology of the South fjords: The magma chambers, sills and dykes of the region from Lón to Breiðdalsvík