IAVCEI Commission on Volcanic Sediments

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Where: Online - Register at (events.teams.microsoft.com/event/bc91f9...)

When: February 27th 2026, 9:00 - 10:00 am GMT

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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”

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Upcoming Geoheritage Workshop!

See the flyer for programme and registration details.

Posted on behalf of the workshop organisers.

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"

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

See you there! 🎄

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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"

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🌋 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

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🌋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...

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🌋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

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🌋 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:

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Reminder to register for this talk! 🌋

@iavcei.bsky.social @sedimentology.bsky.social

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...

@sedimentology.bsky.social

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...

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...

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

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

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.

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.

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 🌋

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

Big boulders ⬇️

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!

🌋

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 🌋

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

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 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)

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 🌋😍

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!

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

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

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.

Good morning Budapest!

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