Video Shows Pulsing and Curving Fault Behavior
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https://doi.org/10.1029/2025EO250307 <-- shared technical article
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https://doi.org/10.1785/0320250024 <-- shared paper
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https://youtu.be/77ubC4bcgRM?si=9Rbmj3uRg-BLaVfP <-- shared video
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"A chance video captured a fault rupture during March’s devastating [Burma] earthquake, delivering real-time evidence of how major seismic tremors propagate..."
#earthquake #geology #engineeringgeology #risk #hazard #Burma #fault #pulsing #curving #realtime #video #slipzone #velocity #crust #seismic #offset #groundmotion #pulse #earthquakeengineering #engineering #slickenlines #faultslip #curved #strikeslip #infrastructure #risk #hazard #trajectory #model #modeling #coseismic #rupture #observation

Today: #VolcanoThursday meets #StructuralGeology. Last year during #hedgewatch on #Iceland we found this #slickenline in #lava from the 1st 2023 #eruption at #Fagradalsfjall. The scratch originated when a block of solidified lava was pushed over softer lava
#Grindavik #volcano
....... Fig 3 #Slickenlines are impawtent if you find them on #faultplanes because they can tell you in which direction the #rocks movedπŸ™€ This example is from #Crete

#geology #slickenside

Slickensides

Slickensides form on rocks in fault planes as the rocks scrape past each other. They are polished surfaces with parallel (to fault motion) striations or grooves called slickenlines. This can happen suddenly during an earthquake, or gradually during creep.

Below are some slick (and famous) slickensides with mirror surfaces from San Francisco. More detail on these slickensides from Callan Bentley’s great AGU blog, Mountain Beltway: https://blogs.agu.org/mountainbeltway/2015/12/28/corona-heights-fault-san-francisco/

Bonus: See a collection of slickensides and more information from our own Andrew Alden @alden https://www.thoughtco.com/gallery-of-slickensides-4122857

#slickensides #slickenlines #EarthQuakeFaults #rocks #geology #ScienceMastodon @geology

Corona Heights Fault, San Francisco

At the end of the AGU Fall meeting, Callan visits the Corona Heights "mirror" fault, renowned for its gorgeous slickensides. Explore the site in photos in GigaPans.

Mountain Beltway