Session 1.3: Timing and duration of magmatic processes

Yafet Gebrewold Birhane^1,7, Raphael Pik¹, Nicolas Bellahsen², Irene Schimmelpfennig³, Lydéric France^1,4, Juliette Pin^1,5, Dereje Ayalew⁶, and Gezahegn Yirgu⁶

Tuesday, 16:15 - 16:30

Posters

Crystal size distribution (CSD) in a lava sample from Ruapehu volcano, New Zealand: a case study comparing the use of semi-automatic tools in 2D versus 3D images.

Silvia Catalina Moreno-Alfonso¹, Satoshi Okumura², Georg F. Zellmer¹, Stuart Mead¹, Yoshiyuki Iizuka³, Masahiro Yasutake⁴, Kentaro Uesugi⁴ and Akira Miyake⁵.

Tuesday, 16:30 - 18:30 • 258

Constraining ascent velocities of the world's youngest kimberlite magmas using diffusion chronometry modelling

Jessica. J. Rawlings^1,2., Thomas, M. Gernon¹., Martin, R. Palmer¹., Michael, J. Stock³., Chiara, M. Petrone²., Emma, Humphreys-Williams⁴

Tuesday, 16:30 - 18:30 • 260

Rapid assembly of a super-sized magma body over a millennial timescale

Xuanyu Chen , Yigang Xu, Xiaolong Huang

Tuesday, 16:30 - 18:30 • 261

Sequential triggers of Plinian eruptions at Sakurajima Volcano inferred from multi-diffusion analyses

Naoki Araya ¹, Michihiko Nakamura¹, Keiko Matsumoto², and Satoshi Okumura¹

Tuesday, 16:30 - 18:30 • 263

Mush disaggregation and dike propagation timescales at active volcanoes -- Evidence from the 2022-2023 Fagradalsfjall eruptions

Alberto Caracciolo¹, Edward W. Marshall¹, Euan J. F. Mutch², Enikő Bali¹, Sæmundur A. Halldórsson¹, Simon Matthews¹, Olgeir Sigmarsson¹, John Maclennan³, Heini Merrill¹, Bryndís Ýr Gisladóttir¹, Sóley Johnson¹, Maren Kahl⁴, Guðmundur H. Guðfinnsson¹, Jóhann Gunnarsson Robin¹, Rebekka H. Rúnarsdóttir¹

Tuesday, 16:30 - 18:30 • 264

Entire magmatic evolution of the Kikai caldera revealed by zircon triple (U-Pb, Th-Pb, U-Th) dating and its chemistry

Hisatoshi Ito

Tuesday, 16:30 - 18:30 • 266

Magma ascent within days confirmed by systematic diffusion modelling on xenocrystic olivine across the Auckland volcanic field, New Zealand

Jie Wu ^1,2, Shane Cronin², Marco Brenna¹, Ingrid Ukstins², Annaleise Klein³

Tuesday, 16:30 - 18:30 • 267

Cooling rates and crystal residence times in plutonic rocks determined by diffusion chronometry (Adamello batholith, Italy)

Thomas Grocolas¹, Othmar Müntener¹, Anne-Sophie Bouvier¹

Tuesday, 16:30 - 18:30 • 269

Reconstructing the geological record of caldera-forming eruptions on Sumatra (Indonesia)

Francesca Forni ¹, Marcus Phua ², Giuditta Fellin³, Jeffrey Oalmann⁴, Marcel Guillong³, Brian Jicha⁵, Kyle Bradley⁶, Colin Maden³, Hamdi Rifai⁷, Caroline Bouvet de Maisonneuve⁸

Tuesday, 16:30 - 18:30 • 270

Assigning an eruption age: The challenges of dispersed single crystal Ar-Ar ages and insights from geochemistry

Hayden Dalton ¹, Saini Samim¹, Ashley Savelkouls¹, David Phillips¹

Tuesday, 16:30 - 18:30 • 272

Geological constraints on the crystallization timescales of high-silica magmas and the diffusivity of Ti in quartz in the Searchlight Magmatic System (NV, USA)

Ayla S Pamukcu ¹, Sarah M Hickernell¹, Michael P Eddy², Blair Schoene³, Travis Steiner-Leach⁴

Tuesday, 16:30 - 18:30 • 273

Magmatic timescales prior to the 2014-15 eruption at Fogo, Cape Verde: Insights from diffusion chronometry of olivines and clinopyroxenes

Ross Hassard¹, Hilary Downes¹ Eleanor Jennings¹ Simon Day²

Tuesday, 16:30 - 18:30 • 275

Abby Gillen¹, Shanaka de Silva¹, Axel Schmitt², Martin Danišík², Dale Burns³, Guido Salas⁴

Tuesday, 16:30 - 18:30 • 281

Longevity and Thermal Evolution of the Magmatic System Associated with the Cerro Blanco Volcanic Complex, Southern Puna: Insights from Zircon Petrochronology

Walter A. Báez ⁽¹⁾⁽²⁾, Shanaka de Silva ⁽¹⁾, Alejandro Cisneros de León ⁽¹⁾, Agostina Chiodi ⁽¹⁾⁽²⁾, Axel Schmitt ^{(3) (4)} and Martin Danisik ⁽³⁾

Tuesday, 16:30 - 18:30 • 282

Understanding the Ecuadorian Rhyolite Province: A Petrochronologic Investigation of a Rhyolitic Flare-up in the Northern Andes of Ecuador

Marykathryn Campos¹, Shanaka deSilva¹, Patricia Mothes²

Tuesday, 16:30 - 18:30 • 284

Session 1.3: Timing and duration of magmatic processes

Talks

Bayesian approaches to inferring dates and rates of magmatic processes (Invited)

What do zircon age distributions tell us about the magma storage conditions of large ignimbrite eruptions?

U-Th ages and compositions of zircons in Dominica: constraints on a magma plumbing system

Evolution of Plio-Pleistocene shallow-level granites and associated rhyolites in the Tuscan Magmatic Province (Italy).

Unraveling timescales of magmatic processes through diffusion modeling: Insights from diverse volcanic contexts (Invited)

Prolonged post-emplacement cooling of andesitic-dacitic lava flows produces optimal groundmass material for Ar/Ar dating

New Cosmogenic Exposure Dating of Fissural Volcanic Episodes in Afar: Implications for Magmatic Processes and Plumbing System Organisation