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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 15/04/2026

🌋Friday Webinar with CVS🌋 Title: Erosion and aggradation on active volcanoes: 2015-2015 lahars activity at Volcán de Colima Who: Lucia Capra When: Friday 24th April, 5pm CEST (UTC+2) Where: register here (events.teams.microsoft.com/event/75a555...) to join us on teams!

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 13/04/2026

IAVCEI-CVS Field trip🌋 The Miocene unusual volcanic-arc activity at the foot of the Andes, Patagonia, Argentina: how does volcanism affect sediment routing systems? GRANTS INFORMATION AND REGISTRATION: forms.gle/5qqZUcnww7zE... Want to see more? youtu.be/qnW342nRxMs Grants available!

forms.gle

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Rebecca Williams @volcanologist.bsky.social · 19/03/2026

#AskAGeoscientist! 🪨⚒️🌍🧪👩‍🔬 Ever wanted to ask what it's like to walk on lava? How we know what a volcano plumbing system is like? Do volcanologists actually wear those silver suits? Whatever your burning question, pop it below as Friday I'm recording a podcast with @smitchellscience.bsky.social!

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 18/03/2026

When: 19 - 23 October 2026 Where: S.C. de Bariloche, Argentina Registration deadline: June 20th 2026 Travel grants (PhD Students and Early Career Researchers) deadline: June 20th 2026 Register here: lnkd.in/eNCwsxhh

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 18/03/2026

Field trip team: Prof. Dr. Leandro D’Elia (CONICET-UNLP), Dr. Manuel López (CONICET-UNLP), Dr Andrés Bilmes (CONICET-UNLP). Invited professor: Prof. Dr. Károly Németh (SGS-EPSS) See photos for information (aims, location, required equipment, itinerary and cost) (2)

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 18/03/2026

The CVS is going to Argentina! 🌋 Join us on our fieldtrip named: “The Miocene unusual volcanic-arc activity at the foot of the Andes, Patagonia, Argentina: how does volcanism affect sediment routing systems? “ (1)

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 18/03/2026

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 11/03/2026

🌋 UPCOMING WEBINAR 🌋 "Hot Volcaniclastic Sediments as Sources of Pyroclastic Density Currents: Observational and Modelling Constraints" by Federico Di Traglia When: 20 March 2026, 3pm CET Register here: events.teams.microsoft.com/event/97aa6a... See you there!

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 17/02/2026

REGISTER FOR OUR UPCOMING WEBINAR 🌋 Sebastian Watt from the University of Birmingham will be giving a talk titled: “Lahars and post-eruptive sedimentation impacting the marine environment: examples and opportunities from southern Chile” 1

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 17/02/2026

Where: Online - Register at (events.teams.microsoft.com/event/bc91f9...) When: February 27th 2026, 9:00 - 10:00 am GMT See you there!

events.teams.microsoft.com

Microsoft Virtual Events Powered by Teams

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 17/02/2026

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 11/02/2026

Upcoming Geoheritage Workshop! See the flyer for programme and registration details. Posted on behalf of the workshop organisers.

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 03/12/2025

REGISTER FOR OUR UPCOMING WEBINAR - festive edition! 🌋🎄 CVS members Prof. Dr. Leandro D’Elia and Dr. Manuel López will be giving a talk titled: "The Miocene volcaniclastic record of North Patagonia: tracing high- to low-magmatic arc states from source to sink" (1/2)

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 03/12/2025

Where: Online (Register here: events.teams.microsoft.com/event/9ecbea...) When: December 12th 2025, 1:00 - 2:00 pm GMT See you there! 🎄 (2/2)

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Microsoft Virtual Events Powered by Teams

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 03/12/2025

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IAVCEI - International Association of Volcanology and Chemistry @iavcei.bsky.social · 23/10/2025

🌋 Get involved — shape IAVCEI’s future. 🔁 POLL 3 Proposal to allow a President to serve multiple terms A key change to strengthen continuity in leadership — we want your input! Vote now via the online portal: 👉 www.iavceivolcano.org/proposal-cha... #IAVCEI #VOLCANOLOGY (4/4)

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IAVCEI - International Association of Volcanology and Chemistry @iavcei.bsky.social · 23/10/2025

🌋Get involved — shape IAVCEI’s future. 💡 POLL 2 Revision of membership fees, salary caps & donations We’re reviewing our financial structure to better support all members. Vote now through the online portal: 👉 www.iavceivolcano.org/proposal-for... (3/4)

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IAVCEI - International Association of Volcanology and Chemistry @iavcei.bsky.social · 23/10/2025

🌋Get involved — shape IAVCEI’s future. 🗳️ POLL 1 Amendment to §7 of IAVCEI Statutes & By-Laws Review the proposed updates and cast your vote via the online portal: 👉 www.iavceivolcano.org/amendment-to... #IAVCEI #Volcanology (2/4)

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IAVCEI - International Association of Volcanology and Chemistry @iavcei.bsky.social · 23/10/2025

🌋 IAVCEI Members – Your voice matters! Voting is now open on proposed amendments to our Statutes & By-Laws (SBL). Cast your vote via the online portal and help shape the future of our community. 📥 Voting before: 31 October 2025, Midnight (CET) See the polls below: (1/4)

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 10/10/2025

Join us for our next webinar! 🌋 “From sink to volcanic source: Unravelling eruption records from wet volcaniclastic deposits in fluvial and lacustrine successions” by Prof. Kyoto Kataoka 20th October 2025, 10:30am (CEST/ UTC +2) Joining link: events.teams.microsoft.com/event/4fe506...

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 09/09/2025

Our webinars are back! 🌋 Join us on the 19th September 2025 at 2pm where Duje Smirčić will give their talk on the “Middle Triassic volcanic activity and related products in the External Dinarides” Join here: events.teams.microsoft.com/event/9d01a0...

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 09/09/2025

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 30/06/2025

IAVCEI 2025! 🌋 Join us in person and online at the IAVCEI Scientific Conference. Session 3.5 Volcanic sedimentology and geomorphology: Understanding surface and subsurface processes in driving volcanic landscape evolution and hazards Room 280, Tuesday, Plus 32 posters from 16.30-18.30

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 14/04/2025

Thank you to everyone who attended the workshop and a big thanks to the amazing organising committee 🌋🇭🇺

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 14/04/2025

Then we explored more ignimbrites! We were introduced to the Wind and Eger deposits. We ended our day in sunshine at Tihamér quarry looking at debris flow, lahar and volcanogenic sedimentary deposits.

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 14/04/2025

Day Five (the final day!): On our final day we visited Egerszalók caves where we learnt and discussed about geo-cultural heritage. This gave us an insight into how ignimbrite material allowed people to move into caves as homes.

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 11/04/2025

Then we saw evidence of dilute currents with low angle cross bedding and acc laps - with a castle on top! Finally, some incredible manganese nodules inside the ignimbrite 🌋

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 11/04/2025

Day Four: Today we explored the Demjén ignimbrite from east to west. First we saw it outcropped in a quarry with some fantastic elutriation pipes

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 09/04/2025

After this we went to Ipolytarnóc and saw some primary PDCs and some old fossil footprints. Thank you to our amazing and enthusiastic guide! Finally today we went to Tar, where we observed andesitic volcaniclastics and a debris avalanche with some big boulders! 🌋

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 09/04/2025

Day 3: We started off the morning with a bonus stop to look at some lovely submarine deposited accretionary lapilli. Check out the beautiful cored acclaps with a pumice centre 🌋

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 08/04/2025

Finally we rounded up our day in the “Grand Canyon” where we looked at a beautiful braided river sequence of volcanogenic conglomerates and sandstones!

A geologist holding up their phone to show the group of geologists a reconstruction palaeoenvironment video

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 08/04/2025

Day 2: Today we travelled north into Slovakia 🇸🇰 where we observed a basaltic diatreme section and had lots of discussions surrounding maar formation and infill Then we explored a tuff ring with a castle on top! Look at those baked clasts 🌋😍

A group of geologists standing in front of a large (~20 x 12 m) outcrop. The outcrop is beige and grey. On closer inspection the lower ~4 m consists of interbedded layers of lapilli and tuff. These layers are interpreted as maar scoria layers. Above this are two distinct massive units that contain large sandstone clasts with evidence of imbrication.

Three geologists standing in front of a large (~20 x 12 m) outcrop. The outcrop is beige and grey. On closer inspection the lower ~4 m consists of interbedded layers of lapilli and tuff. These layers are interpreted as maar scoria layers. Above this are two distinct massive units that contain large sandstone clasts with evidence of imbrication.

Dark grey tuff ring deposits which can be seen dipping to the left and right of the image. On the top of this unit there is a castle

A baked sandstone bomb in a tuff ring deposit. Note the baked margins (jointed ring around the centre of the clast)

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 07/04/2025

Day One: Today on our field trip we visited Sámsonháza and saw this amazing outcrop! We looked at the contact between andesitic sills, volcaniclastics, and peperite 🌋 Lots of good rock chats and some great local food! Bring on day 2!

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 07/04/2025

Next Andrea Di Capua gave us a talk about the nomenclature and basics of volcaniclastic sediments

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 07/04/2025

We are in Budapest for our field workshop! Over the next few days we will be travelling around Hungary looking at volcaniclastics and sedimentary successions 🌋🇭🇺 This morning we have had talks form Orsolya Sztanó and Szabolcs Harangi from Eötvös University Budapest giving us an overview of the area

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Rebecca Williams @volcanologist.bsky.social · 07/04/2025

Good morning Budapest! Am excited for the @comvolcseds.bsky.social field workshop around Hungary looking at volcaniclastics and sedimentary successions.

Photograph of the Parliament building at sunrise. The building is spectacular, extravagant style. It is mirrored in the waters of the Danube River. An orange sky gives the photograph a warm glow. It was not warm.

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 26/03/2025

Prof. Roberto Scasso is director of the IGEBA, Department of Geology at the University of Buenos Aires since 2021, as well as Investigador Superior at CONICET since 2024. Register Online: events.teams.microsoft.com/event/2573c4...

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 26/03/2025

UPCOMING WEBINAR 🌋🌊 Title: Volcaniclastic contribution in Jurassic organic-rich black shales of Argentina and Antarctica by Prof. Roberto Scasso When: 4th April 2025, 13:00 - 14:00 GMT

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 12/02/2025

Upcoming Webinar 🌋 Join us online for a webinar by Kristin Sweeney (University of Portland) on “Topographic, climatic, and age controls of the fluvial reworking of volcanic debris avalanche deposits” When: Wednesday 26th February 2025 Time: 12:00 PST/ 20:00 GMT/ 21:00 CET

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 23/01/2025

Read more about Ed's work here: www.linkedin.com/in/edward-mc... www.researchgate.net/profile/Ed_M... twitter.com/The_Volcano_... @thevolcanoguy.bsky.social

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 23/01/2025

Ed’s research focuses on the combination of field observations and geochemical analysis to establish correlations between caldera-forming pyroclastic deposits in the English Lake District. Additionally, Ed studies the pedagogical potential of video games within geoscience.

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IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 23/01/2025

Meet the Team 🌋 Ed McGowan, PhD researcher at the University of Leicester, CVS Webmaster.

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