# Event Details

- **Event Name**: Rethinking the explosive-effusive transition in silicic eruptions
- **Event Start and End Date**: Thu, 20 Nov, 2025 at 12:30 pm – Thu, 20 Nov, 2025 at 01:30 pm
- **Event Description**: ⚠️⚠️ Exceptionnellement un jeudi - Exceptionally on a Thursday ⚠️⚠️ Salle PK-6610 - Room PK-6610 ⚠️⚠️

Séminaire du Geotop / Geotop seminar

Événement hybride / Hybrid event:

En personne/In person: 
LOCAL/ROOM PK-6610
201 ave. du Président-Kennedy, Montréal, QC

Zoom ID: 832 1632 7466
Passcode: isotope

Prof. Hugh Tuffen, Chair in Volcanology, Lancaster University, UK

"Rethinking the explosive-effusive transition in silicic eruptions"

According to established thinking, a volcanic eruption may be either explosive or effusive in style, with initially violent activity generally giving way to gentler emplacement of lava. However, recent observations of a number of silicic eruptions, most notably Chilean rhyolites (Fig. 1), have challenged this framing, with the realisation that explosive pyroclastic venting may accompany much or all of the supposedly effusive phase. This demands reappraisal of the nature of explosive and effusive activity [1], and the controlling conduit processes. 
In this presentation we will overview evidence for this mixed (hybrid) eruption style, examine the geological signature of hybrid activity in pyroclastic deposits, lava flows [2], and dissected conduits [3], and appraise the implications for volcanic hazard assessment and volcanic outgassing.

References
[1] Wadsworth, F.B. et al., 2020 DOI: 10.1126/sciadv.aba79
[2] Unwin, H., et al., 2023 DOI: 10.1007/s00445-023-01638-z
[3] Farquharson, J.I., et al., 2022 DOI : 10.1038/s41467-022-32522-7
- **Event URL**: https://allevents.in/montreal/rethinking-the-explosive-effusive-transition-in-silicic-eruptions/200029195452020
- **Event Categories**: workshops
- **Interested Audience**: 
  - total_interested_count: 16

## Ticket Details

- **Ticket URL**: http://facebook.com/200029195452020?utm_source=AllEvents.in&utm_medium=event-discovery-platform&utm_campaign=montreal-events

## Event venue details

- **city**: Montreal
- **state**: QC
- **country**: Canada
- **location**: UQAM Pavillon Président-Kennedy (PK)
- **lat**: 45.50888
- **long**: -73.56865
- **full address**: UQAM Pavillon Président-Kennedy (PK), 201 Avenue du Président-Kennedy, Montréal, QC H2X 3Y7, Canada, Montreal

## Event Organizer details

- **affiliate_id**: 2
- **organizer**: Geotop (https://allevents.in/org/geotop/26595745)

## Event gallery

- **Alt text**: banner
  - **Image URL**: https://dyn-image.allevents.in/generate-image?v=4&title=Rethinking+the+explosive-effusive+transition+in+silicic+eruptions&date=Thu%2C+20+Nov%2C+2025+at+12%3A30+pm&bg=1
- **Alt text**: thumbnail
  - **Image URL**: https://cdn-az.allevents.in/events1/banners/efd3533a5e42c7da583fce72137e6c4b0335b1d68ba533e28efaf376d5c84fe7-rimg-w300-h300-dc322e2d-gmir?v=1763113280

## FAQs

- **Q**: When is the event happening?
  - **A:** Thu, 20 Nov, 2025 at 12:30 pm
- **Q**: Where is the event happening?
  - **A:** UQAM Pavillon Président-Kennedy (PK), 201 Avenue du Président-Kennedy, Montréal, QC H2X 3Y7, Canada, Montreal
- **Q**: Who is organizing the event?
  - **A:** Geotop
- **Q**: What type of event is this?
  - **A:** workshops
- **Q**: Where can I find ticket details about Rethinking the explosive-effusive transition in silicic eruptions ?
  - **A:** You can find ticket details about this event on AllEvents.

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