Latest posts tagged with #Subduction on Bluesky
#ecsmonday
Strongly coupled volcanic arc 🌋 meets weakly coupled subduction 🌊: Portela et al. (ES) find slab coupling Φ≈0.2 offshore El Salvador, strengthening westward into Guatemala
doi.org/10.5194/se-17-369-2026
#subduction #plateboundaries #geohazards #paperalert
Happy to share our paper on Coupled Tectonic and Surface Processes at EPSL - years of work!
#Tectonics #EarthSurface #Subduction #Fault
doi.org/10.1016/j.ep...
How much do you know about earthquakes? Find out with this fun little 10-question quiz in the intellectual playground at 500ways.com/earthquake-q... ( #earthquake, #temblor, #seismic, #tectonic, #quake, #fracking, #subduction, #quiz, #trivia)
His topics are broad from #subduction zones to #extremeevents 🌪️, the interplay between landscapes and aquatic species, by linking #fieldwork, quantitative analysis and #numericalmodelling. (2/2)
Want to know more? Register here 🚨 www.steepestdescentmeeting.org
#EGU26 #Geosciences #Geomorphology
Happy Holidays everyone! Since today is Christmas Day, I thought I would post a #Christmas #rock from #Norway. #Eclogite is an ultra-high pressure rock created in #subduction zones (~90 km depth). It is made of #garnet (red) and #omphacite (green).
How much do you know about earthquakes? Find out with this fun little 10-question quiz in the intellectual playground at 500ways.com/earthquake-q... ( #earthquake, #temblor, #seismic, #tectonic, #quake, #fracking, #subduction, #quiz, #trivia)
A #Subduction zone is a geological area where two tectonic plates collide, and one plate sinks or "subducts" beneath the other and is forced into the Earth's mantle.
This process can trigger powerful #Earthquakes, volcanic eruptions, and #Tsunamis.
knowledgezone.co.in/kbits/69159c...
How much do you know about earthquakes? Find out with this fun little 10-question quiz in the intellectual playground at 500ways.com/earthquake-q... ( #earthquake, #temblor, #seismic, #tectonic, #quake, #fracking, #subduction, #quiz, #trivia)
[3/6] Ce processus ne se produit pas en 1 fois. La #subduction meurt par étapes successives, chaque fracture isolant des fragments qui deviennent des microplaques. Cette désintégration lente agit comme des "ciseaux naturels" redéfinissant les limites tectoniques au fil du temps. #geography
Excited to join #GSAConnects2025 with the @UNC_EMES team! EMES is proud to showcase research on subduction, orogens, climate, uplift, and more! Come find us, connect, and be part of the conversation! 🔥🗻
#GeoTwitter #Petrology #Subduction
Blue yoderite ( Mg(Al,Fe3+)3(SiO4)2O(OH) ) surrounding remnant kyanite with talc and quartz. Plane polarized transmitted light.
Yoderite surrounding remnant kyanite with talc and quartz. Cross polarized transmitted light.
Rare blue yoderite replacing kyanite (-talc + quartz). Only found in two places on Earth (Tanzania and Zimbabwe), yoderite forms at high pressure in hot subduction zones from rocks rich in in Mg and Al, poor in alkalis and Ca, in the presence of water and […]
[Original post on fosstodon.org]
Subduction Zone Breaks Apart Beneath Pacific Northwest
Scientists on the vessel Marcus G. Langseth captured a subduction slab tearing off Vancouver Island, showing a five‑kilometre drop across a 75‑km stretch. The finding refines Cascadia quake risk models. getnews.me/subduction-zone-breaks-a... #cascadia #subduction
Slab fragmentation and cessation of subduction enabled by the NFZ. Schematic 3D interpretation of the NFZ-Exp-JdF triple junction region in northern Cascadia where subduction termination is imminent. The paleo-NFZ (thin black lines) developed as a broad shear zone in nascent oceanic lithosphere and reactivated inherited abyssal hill faults formed at the ridge. The weakened lithosphere buckled as a trench-parallel slab tear formed at the northern edge of the Exp slab and migrated across the paleo-NFZ wake. Recent strain localization along the modern NFZ at ~1 Ma dissected the migrating slab tear and effectively isolated the Exp microplate, leading to enhanced tearing, decoupling, and a local reduction in the slab pull force. The NFZ thus serves as a trench-normal segmentation boundary enabling piecewise slab fragmentation and subduction termination.
[8/8] L’étude révèle qu’une #subduction ne s’effondre pas brutalement mais se défait lentement, laissant derrière elle microplaques et anomalies volcaniques. #Cascadia devient ainsi un laboratoire naturel pour comprendre la dynamique et le cycle de vie des plaques. #geography #earthquakes #PacificNW
[1/8] Des chercheurs montrent, grâce à des images sismiques inédites, qu’au large de l’île de Vancouver la subduction de la plaque Juan de Fuca est en train de se déchirer. #geography #tectonics #subduction #earthquakes #VancouverIsland #NootkaFZ #PacificNorthwest
How much do you know about earthquakes? Find out with this fun little 10-question quiz in the intellectual playground at 500ways.com/earthquake-q... ( #earthquake, #temblor, #seismic, #tectonic, #quake, #fracking, #subduction, #quiz, #trivia)
How much do you know about earthquakes? Find out with this fun little 10-question quiz in the intellectual playground at 500ways.com/earthquake-q... ( #earthquake, #temblor, #seismic, #tectonic, #quake, #fracking, #subduction, #quiz, #trivia)
map showing location of earthquake and thrust mechanism
map showing location of the second earthquake and thrust mechanism
A magnitude 6.8 foreshock followed by a magnitude 7.4 #earthquake 20 minutes later, offshore #Kamchatka.
Shallow hypocentral depths and thrust mechanisms point to a rupture on the #subduction #megathrust. ⚒️ 🧪
geoscope.ipgp.fr/index.php/en...
sheared serpentinite in thin section, FOV 2.5 mm
🚨PAPER ALERT🚨
This is a #serpentinite #shearzone.
It is part of a #subduction complex where oceanic serpentinites were subducted, sheared, carbonated, exhumed, and coupled with sediments that we recently described on the Island of Elba, Italy. A 3ad
#geology #RockInTuesday
1/x
You mean greed and ignorance put us all in danger?
#Oregon #Washington #cascadia #tsunami #subduction #PNW #earthquakes #earthquake #USGS #climatechange
youtu.be/89uVoIN5ZH4?...
A cool example applying the concept of subduction invasion to past oceans:
www.scientificamerican.com/article/tect...
#geology #subduction #subductioninitiation #tectonics
Tectonic plates can spread subduction like a contagion — jumping from one oceanic plate to another #Science #EarthSciences #Geology #TectonicPlates #Subduction
How much do you know about earthquakes? Find out with this fun little 10-question quiz at 500ways.com/earthquake-q... (#earthquake, #temblor, #seismic, #tectonic, #quake, #fracking, #subduction, #quiz, #trivia)
Non-Collisional Orogeny In Northeast Japan Driven By Nearby Same-Dip Double Subduction
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tinyurl.com/38k4ykry
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#geology #structuralgeology #japan #subduction #system #plate #geometry #mantle #tectonics #geodynamics #orogeny #Ryukyu #kinematics #backarc #earthquake #fault #faulting #platetectonics
"There also has not been a quake of large seismic magnitude along the #Cascadia #subduction zone since 1700" #earthquake #bcpoli
#tectonics
www.independent.co.uk/news/world/a...
SciTech Chronicles. . . . . . . . .May 17th, 2025
bit.ly/stc051725
#volcanoes #Io #collision #gravitational #AMOC #dilution #mass #expansion #sediment #cooling #ice-sheet #AMOC #Negev #pendants #child #"Tel Malḥata" #SAR #Magellan #metamorphism #subduction
How much do you know about earthquakes? Find out with this fun little 10-question quiz at 500ways.com/earthquake-q... (#earthquake, #temblor, #seismic, #tectonic, #quake, #fracking, #subduction, #quiz, #trivia)
Sink or Swim: The Fate of Sinking Tectonic Plates Depends on Their Ancient Tectonic Histories
www.newswise.com/articles/sin...
#tectonicplates #subduction #oceanscience #science #AncientDiscoveries
