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Commission on Tephrochronology @cot-iavcei.bsky.social · 22/06/2026

Deadline extended until September for the Special Issue on #Tephra at JQS. More information below 👇

Commission on Tephrochronology @cot-iavcei.bsky.social · 01/06/2026

To all tephra fans, there will be a dedicated session "From Ash to Archive" to present your work on marine studies, eruptions chronologies and quantifications of volcanic events. Deadline postponed to June, 7th. ⏱️ When: October 19th to 22nd, 2026 📍Where: Santorini (Greece) & online 📝 Program below!

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Commission on Tephrochronology @cot-iavcei.bsky.social · 03/05/2026

Note that the flyer says the COT social is on Wednesday, that is incorrect- it is on Tuesday! Oops! Please rsvp if interested! The link is correct. #EGU26 @tephraportal.bsky.social @oxfordtephra.bsky.social

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Commission on Tephrochronology @cot-iavcei.bsky.social · 01/05/2026

EGU is coming up fast and there is a lot going on! This includes two sessions on Monday and Tuesday, a social on Tuesday night, our townhall on Wed in Room N1 (7-8pm), and workshop on Thursday. Check out the attachment for details #EGU2026 @egu.eu @iavcei.bsky.social @oxfordtephra.bsky.social

This is a flyer describing events tied to the Commission on Tephrochronology at the European Geophysical Union meeting that kicks of Monday May 4th

There are two tephra-related sessions called
“Hazards related to explosive volcanism: tephra dispersal and pyroclastic density currents” Posters are on Tuesday 5th May, 08:30–10:15 in Hall X2 and Oral session on Tuesday 5th May, 16:15–18:00 Room 2.21. With invited speaker Mathieu Colombier of Munich University
And “Tephra research beyond boundaries: integrative applications and data-driven innovation in Earth system sciences” With Posters on Monday 4th May 08:30-10:15 in Hall X3; and Oral session on Tuesday 5th May 08:30-10:15 in Room 2.93. With invited speakers Matthew Loewen of the Alaska Volcano Observatory and Victoria Smith of the University of Oxford.

Other related meetings and workshops include The Commission on Tephrochronology Community Meeting on Wednesday 6th May, from 19:00-20:00 in Room N1. Join for updates and announcements, including the next venue of Tephra 2028 and other exciting events.

There is also the Tephra Information Portal Townhall on Thursday 7th May from 19:00-20:00 in Room M1. Find out what TIP is and how it is helping provide researchers with a central hub for discovering, accessing and sharing data.

There will be a StraboField Tephra workship. This is a free field app to collect tephra stratigraphic data: Runs on Tuesday May 5th from 16:15-18:00 and 19:00-20:00 in Room 2.42.
RSVP appreciated but not required at
https://forms.gle/PYbxoGLWV7b53WCg9

Finally COT is trying to organize a social after the COT Townhall on Wednesday May 6th after 8 pm. Details will follow the minute we know them!
Please RSVP ASAP for planning at https://forms.gle/zyhRJuXGEqps2ySW6

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Commission on Tephrochronology @cot-iavcei.bsky.social · 26/02/2026

A great opportunity to submit a paper to a new joint publication between the AGU and Geological Society: Geohorizons special publication on tephra & hazards. Born our last International tephra meeting, they are still taking submissions! 🧪⚒️🌋 #tephra @geolsoc.bsky.social @agu.org @iavcei.bsky.social

Flyer for a Geohorizon special issue call for papers, it reads:

Tephra: from reconstructing past volcanic eruptions to
modelling and forecasting future hazards
Tephra produced during explosive volcanic eruptions can generate far-reaching social, economic, and environmental impacts with potentially devastating consequences for communities and livelihoods. By improving our understanding of how tephra is generated, transported and deposited - both during past events and ongoing activity - we can reduce these impacts and strengthen preparedness for future eruptions.
This GeoHorizons volume will assemble a collection of papers that advance tephra studies, reflecting significant developments in the field over the past two decades. The volume will be organized into three sections:
1- Reconstructing past eruptions
This opening section will highlight studies that use tephra to build eruption histories and reconstruct processes from historical and prehistoric explosive events. We welcome research
involving field and deposit-based investigations, studies of sedimentary, archaeological and ice archives, modelling of past eruptions, and textural, geochemical and petrological analysis.
2- The generation, dispersion and sedimentation of tephra
Focusing on recent or ongoing tephra-producing eruptions, this section invites studies examining trends in deposit characteristics such as grainsize and thickness, ash aggregation and particle settling processes, experimental work on plume dynamics and dispersion, and modelling of
tephra generation transport and deposition.
3- Forecasting and mitigating the impacts of future
explosive eruptions
The final section looks to the future, with topics including tephra dispersion and impact modelling, climatic impacts and projections, volcanic hazard mapping, and applied studies that support risk reduction.

second page of flyer for special issue that says:

This GeoHorizons volume will be of interest to physical volcanologists, geologists, tephrochronologists, hazard and climate modellers, and computational volcano and natural disaster scientists across academia, government and industry.

Contact us, we'd love to feature your research
If are interested in contributing to this volume, or have any questions, please get in touch with the volume editors via the email addresses listed below.
Volume Editors
Alastair G. E. Hodgetts (University of Edinburgh, UK) - alastair.hodgetts@ed.ac.uk
Thomas J. Aubry (University of Oxford, UK) - thomas.aubry@earth.ox.ac.uk
Frances M. Beckett (Met Office, UK) - frances.beckett@metoffice.gov.uk
Paul A. Jarvis (Earth Sciences New Zealand, New Zealand) - p.jarvis@gns.cri.nz
Britta J. L. Jensen (University of Alberta, Canada) - bjjensen@ualberta.ca
Elodie Lebas (Université Clermont Auvergne, France) - elodie.lebas@uca.fr

GeoHorizons is committed to the principles of open science. This volume will be published open access, and therefore eligibility under a Read and Publish agreement or the payment of an Article Processing Charge (APC) is required on acceptance of an article for publication. Corresponding authors at participating Read and Publish institutions can publish chapters in GeoHorizons at no charge.

Check if your institution has a Read and Publish agreement www.geolsoc.org.uk/OA

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Commission on Tephrochronology @cot-iavcei.bsky.social · 06/02/2026

XXII INQUA Congress 2027 in Lucknow, India. Abstract deadline: 15th Feb 2026 COT sponsored session on Tephrochronology across multiple disciplines. Should be fantastic for many tephra fans out there! 🧪⚒️🌋 @oxfordtephra.bsky.social @camtephra.bsky.social @iavcei.bsky.social @inquaecr.bsky.social

Tephra session advertisement for INQUA congress in India, 2027.

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Commission on Tephrochronology @cot-iavcei.bsky.social · 16/01/2026

EAA 2026 (Athens) - Call for contributions is now open for the session "Advances in Tephrochronology for Archaeological Research" 🌋🔬🙂🔬🌋 Deadline: 5 Feb. #tephra #archaeology #EAA2026

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Commission on Tephrochronology @cot-iavcei.bsky.social · 22/12/2025

Have a weird urge to write an abstract over Christmas? Tephrochronology Beyond Boundaries: Chronology, Correlation, and Innovation in Earth System Studies Tephrochronology Keynote: Victoria Smith Deadline: 15 Jan 2026, 13:00 CET @oxfordtephra.bsky.social @egu.eu @iavcei.bsky.social

meetingorganizer.copernicus.org

Session SSP2.7

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Commission on Tephrochronology @cot-iavcei.bsky.social · 12/12/2025

Just going to repost this - EGU is looking pretty special this year, especially for the tephra fans out there! #geology #volcano #tephra #egu2026 @egu.eu @iavcei.bsky.social 🌋🧪⚒️

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European Geosciences Union (EGU) @egu.eu · 27/11/2025

#EGU26 is already on its way 🎉! Abstract submissions are officially open until 15 January 2026, 13:00 CET. Let the journey begin and submit your abstract NOW! 👉 Visit www.egu26.eu for more information!

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Commission on Tephrochronology @cot-iavcei.bsky.social · 26/11/2025

📣 🌊🌋 An opportunity to present your research in the "Ash and Archives" session proposed at the 2nd Submarine Volcanism Workshop that will be held next year in October 2026 in Santorini, Greece, and online 📣 🌊🌋 Detailed information in the flyer below 👇

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Commission on Tephrochronology @cot-iavcei.bsky.social · 20/11/2025

🌋 Hello tephra & volcano fans 🌋 We have some announcements, including THREE tephra sessions at the #EGU2026 and TWO special issues! Check out our flyer below with all the details, and pass it on! @egu.eu @ingvterremoti.bsky.social @iavcei.bsky.social @tephraportal.bsky.social 🧪⚒️

Commission on Tephrochronology presents three sessions at the EGU, come and submit and abstract:
GMPV11.1 “Tephra processes and dispersal: from tephrochronology to hazard assessment applications in volcanology”
SSP2.7 “Tephrochronology Beyond Boundaries: Chronology, Correlation and Innovation in Earth System Studies”
ESSI3.6 "From Principles to Practice: Multidisciplinary Approaches to Data-Driven Tephra Research"

Details on the submission process can be found at https://www.egu26.eu/authors/how-to-submit.html

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Commission on Tephrochronology @cot-iavcei.bsky.social · 01/09/2025

🔁📢 Call for papers - JQS Special Issue on distal tephra analysis Sponsored by IAVCEI Commission on Tephrochronology (COT) 🗓Deadline: 2 Jan 2026

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IAVCEI - International Association of Volcanology and Chemistry @iavcei.bsky.social · 04/07/2025

We are thrilled to announce that the next IAVCEI Scientific Assembly will be held in Costa Rica! 🇨🇷 A heartfelt thank you to everyone who joined us in #IAVCEI2025 in Switzerland. We look forward to seeing you all again in #IAVCEI2029. Welcome to Costa Rica!

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Univ. Bristol Volcanology Group @bristolvolcanology.bsky.social · 19/06/2025

We are advertising for a 3-yr Senior Research Associate position in Caribbean Volcanic Petrology! 🌋🏝️ Please share with those who might be interested. More details within the link. Advert closing July 17th: www.bristol.ac.uk/jobs/find/de... @iavcei.bsky.social @vmsg.bsky.social

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IAVCEI - International Association of Volcanology and Chemistry @iavcei.bsky.social · 20/06/2025

🌋 We are excited to announce the release of the full program for IAVCEI 2025, taking place in just two weeks! 🔥🌍 With this link 👉 e5k.github.io/IAVCEI-SA2025/ you can find the complete program — including keynote lectures, oral and poster sessions, workshops, and social events.

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Britta Jensen @tephrabird.bsky.social · 04/05/2025

Next we stop at a favourite: Saskatchewan Crossing. #strataday. Loess, paleosols, and three (!) volcanic ash: Mazama, Mount St Helens Yn and Bridge River. Doesn’t get much better, unless you like glaciers. We finish at Athabasca Glacier. Beautiful but heart breaking in her steady retreat. 🧪⚒️

TA Shaun, from VARG, in his element teaching the students about volcanic ash, you can see two clear in this picture, Mazama at his knee and he is looking at Mount St Helens Yn

A group of young Bighorn sheep by Athabasca Glacier - a classic site in the Rockies!

Student Lachlan looks to the distance inspecting end moraines with the Athabasca glacier behind him.

Saskatchewan River Crossing with the loess cap on the terrace to the right, full of silt, paleosols and tephra!

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IAVCEI - International Association of Volcanology and Chemistry @iavcei.bsky.social · 07/05/2025

April Compilation of Bulletin of Volcanology ! 🌋 We’re excited to share the latest research articles published in April 2025 on the Bulletin of Volcanology! 🔥 🖇 All IAVCEI members enjoy free access to the journal Check out the full paper list of this month! 👇🏼

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Commission on Tephrochronology @cot-iavcei.bsky.social · 28/04/2025

Big thanks to GEOMAR for hosting us at the Mediterranean Tephra workshop - Stronger Together 🌋 last week. Fantastic talks, including the latest results from IODP Exp. 398

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Commission on Tephrochronology @cot-iavcei.bsky.social · 24/04/2025

A reminder that nominations are open for our executive and location for the next meeting. Please email COT_general@protonmail.com if you are interested before May 1st. This is a great opportunity especially for early career researchers- great community and network building! 🧪🌋⚒️

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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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Commission on Tephrochronology @cot-iavcei.bsky.social · 09/04/2025

CoT is seeking nominations for our executive and hosts for the next Tephra Conference (2028). Interested? Questions? Check out the flyer. Nominations are open until April 30. @iavcei.bsky.social @oxfordtephra.bsky.social @camtephra.bsky.social @tephrotastic.bsky.social @tephraportal.bsky.social 🧪🌋⚒️

CoT is having their elections and putting a call out for nominations, this image is a flyer that states all the details related to this - nominations open now and close April 30th. We will be in contact with nominees to have elections (online) starting in May 12th, closing May 30th. Reach out to us if you have any questions.

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Commission on Tephrochronology @cot-iavcei.bsky.social · 09/04/2025

We made it! If you are interested Quaternary geology, archaeology, climate/environmental change and volcanology and how all those things are interconnected by volcanic ejecta, give us a follow. @inquaecr.bsky.social @iavcei.bsky.social @comvolcseds.bsky.social @iavcei-involc.bsky.social 🧪🌋⚒️

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