Ignimbrite (Ash-Flow Tuff) 🌋
A geological record of explosive volcanism—formed when towering eruption columns collapse and unleash scorching pyroclastic density currents (PDCs) across the landscape. These deposits of ash, pumice, crystals, and rock fragments accumulate, compact, and may weld into solid rock, preserving textures like fiamme and eutaxitic fabric that reveal the extreme conditions of emplacement.
From eruption → column collapse → pyroclastic flow → deposition → welding → lithification.
#Ignimbrite #AshFlowTuff #Volcanology #PyroclasticFlow #PyroclasticDensityCurrent #VolcanicRocks #IgneousRocks #Geology #GeologyRocks #EarthScience #Geoscience #VolcanicEruption #Petrology #FieldGeology #PhysicalGeology #StructuralGeology #GeologicalProcesses #VolcanicDeposits #ScienceEducation #GeologyDiagram
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30 Sep 2024
🌋 September Compilation of Bulletin of Volcanology (BoV) is here! 🌋
📖 BoV is the official journal of IAVCEI. Members enjoy free access to all articles! 🔥
Explore the latest research on #volcanomonitoring, #tephrafall & #pyroclasticdensitycurrent hazards, and more:✨
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17 Jan 2023
The most apocalyptic image ever captured of #PyroclasticFlow #GlowingAvalanche #NuéeArdente #PyroclasticDensityCurrent #PDC #Philippines
#MtPinatubo #MountPinatubo #Pinatubo
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19 Apr 2020
New improved set-up for online #DensityCurrent #PyroclasticDensityCurrent teaching on Tuesday. Late #FlumeFriday in my garden 😂. Glad it's sunny during lockdown 😎
@Tom_Coulthard @EEIatHull @geographyhull @GeologyHull @UniOfHull
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8 May 2019
#PDCs travel PDQ! [pretty darn quick!] At 220 mi/hr and temps reaching 1,500 °F, they knock down, shatter, burn, bury, carry away everything in their paths. Heed advice and stay away!
go.usa.gov/xmQwG
#hazfacts
#PyroclasticDensityCurrent
#VolcanoPreparednessMonth
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2 Jul 2018
‼️❗️Paper Alert ❗️‼️
New study about PDCs of Mt. Merapi, the most active volcano in #Indonesia 🌋
@indo_volcanoes
#Volcano #eruption #pyroclasticdensitycurrent #Merapi
Click on the link below ⤵️
authors.elsevier.com/a/1XGPS…
(Free download for 50 days)
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13 Nov 2016
Cheeky little twister tries to steal the limelight from a #pyroclasticdensitycurrent ... awesome image
12 Nov 2016
Spectacular volcanic ash devil during the eruption of the Sinaburg volcano, Sumatra, Indonesia. Photo: Sadrah Peranginangin
6 Jul 2015
Truncated #crossbeds in a #pyroclasticdensitycurrent deposit from a #maar tephra ring #volcanomonday Hopi Buttes, AZ
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