#tectonics — Public Fediverse posts

There is an article on Science Digest about how scientists believe the continents exist because of a 190MM-year up-and-down passage Earth makes as we circle the galaxy's supermassive black hole. It creates exposure to gases & disturbs Oort cloud. Was going to link to it, but the page was hidden by a popup demanding I accept all cookies, or immediately manage them, before un-blurring the article. Was linked in an email describing its contents. Thanks for the description! 👍

#science #tectonics

Venus doesn't have tectonic plates, or at least not the same way Earth does. But it does have rifting, because tectonic processes work on multiple scales.

Link: https://www.nature.com/articles/s41561-026-02044-8​

#Venus #Tectonics

New evidence suggests Venus is still tectonically alive

https://phys.org/news/2026-07-young-rift-flanks-venus-tectonically.html

#science #venus #tectonics

Layer.
Cassons, #Graubünden #Schweiz
#UNESCO #tectonics #Mountains

💁🏻‍♀️ TIL: 🌍🗺️ Scientists in #NewZealand led an international team to map the boundaries of a massive #underwater landmass.

By analyzing rock samples dredged from the ocean floor alongside satellite #data, researchers confirmed this crustal block sits distinct from #Australia. The resulting map provides a complete picture of how this continent separated from #Gondwana millions of years ago.

👉 https://www.popularmechanics.com/science/environment/a71839248/earth-eighth-continent-zealandia-mapped/

#geology #zealandia #earthscience #maps #cartography #continents #tectonics #oceans #geography #gns #research #science

Scientists Complete Mapping of Earth's Submerged Eighth Continent, Zealandia

📰 Original title: Earth’s Hidden Eighth Continent Is No Longer Lost

🤖 IA: It's clickbait ⚠️
👥 Users: It's clickbait ⚠️

View full AI summary https://en.killbait.com/scientists-complete-mapping-of-earth-s-submerged-eighth-continent-zealandia.html?utm_source=mastodon_world&utm_medium=social&utm_campaign=killbait.mastodon_world

#geology #tectonics #zealandia

"#Venezuela #earthquake death toll nears 1,500, tens of thousands still missing"

#Disaster #UN #Geology #Science #Tectonics #America #News #Death #Rescue

https://www.france24.com/en/americas/20260629-venezuela-s-earthquakes-death-toll-nears-1-500-tens-of-thousands-still-missing

2/
The Strike-Slip Network: Because this is a horizontal "strike-slip" boundary (very similar to California's San Andreas Fault), the jagged edges of these massive rock plates lock up, accumulate immense friction, and eventually snap. This happens along a complex 1,300-kilometer-long network of cracks known as the Boconó–San Sebastián–El Pilar fault system.

#earthquake
#Venezuela
#tectonics

Why Venezuela?

The geological reality of Venezuela is driven by horizontal tectonic forces:

The Fault Line Seam: Northern Venezuela sits directly on the boundary where the Caribbean Tectonic Plate meets the South American Tectonic Plate. The Caribbean plate is grinding horizontally eastward past South America at a rate of about 20 millimeters per year.

#earthquake
#Venezuela
#tectonics

Magma-rich continental margins (like the North American Atlantic margin) have a lot of sediment on top of them... too much, actually, at least for classical models to explain, but with faster heat transport, there might be an explanation.

Link: https://www.nature.com/articles/s43247-026-03742-2

#Tectonics #Magma #Subsidence

I like epi-volcanic atolls, but at times, they find themselves being subducted to the depths of the Earth. That puts a lot of carbon into the asthenosphere and accelerates CO2-rich arc magma ascent (and maybe restarts the cycle).

link: https://www.nature.com/articles/s41467-026-71536-3

#Volcano #Tectonics #Subduction

Influence Of Inherited Rifted Margin Architecture On Continental Collision Dynamics
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https://doi.org/10.1029/2025GC012681 | https://www.researchgate.net/publication/404299243_Influence_of_Inherited_Rifted_Margin_Architecture_on_Continental_Collision_Dynamics <-- shared paper
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#tectonics #geoscience #geology #mountainbuilding #orogeny #subduction #rifting #Alps #Pyrenees #Caucasus #mountains #numericalmodelling #structuralgeology #platetectonics #Europe #Asia #continents #rockmemory #continentalcollision #model #modeling #spatialanalysis #spatiotemporal #crust #mantle #reconstruction #sediment #erosion #rift #wilsoncycle #accretion #lithosphere

Scientists Detect Early Signs of Tectonic Activity in Zambia's Kafue Rift

📰 Original title: First Signatures of a Future Tectonic Split Are Bubbling Up In Zambia

🤖 IA: It's clickbait ⚠️
👥 Users: It's clickbait ⚠️

View full AI summary: https://en.killbait.com/scientists-detect-early-signs-of-tectonic-activity-in-zambia-s-kafue-rift.htmlce560096-af34-4b27-977c-942e4a41219e?utm_source=mastodon_world&utm_medium=social&utm_campaign=killbait

#geology #tectonics #rifting #zambia

#paleontology and yours truly in the world’s biggest English language newspaper! People really seem to urgently need to know where their backyard was in the Jurassic 😀 who would have thought that in 2026 #continentaldrift would enthrall the public? 😄 https://timesofindia.indiatimes.com/science/this-tool-shows-where-your-home-was-when-dinosaurs-roamed-earth-over-230-million-years-ago/articleshow/130718380.cms #geology #tectonics

`We also document the oldest known geomagnetic reversal at ~3.46 Ga, consistent with an axial dipolar dynamo that reversed less frequently than today’s. The existence and rates of these surface and core geophysical phenomena provide geodynamic context to Earth’s early geophysical and biological evolution.`

http://dx.doi.org/10.1126/science.adw9250

#tectonics #geology #geophysics

Neogene Uplift Of The Chiribiquete Tabletop Mountains In The Colombian Amazon And Its Paleobiogeographic Implications
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https://doi.org/10.1016/j.palaeo.2026.113645 <-- shared paper
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H/T Richard F. Ott
“The Chiribiquete are table top mountains located deep in the Colombian Amazon and host many rare endemic species. Helanlin Xiang's work shows that the Chiribiquete Mountains likely upifted before the Early Miocene and could have acted as a long-lived stepping stone, connecting species in the Andes with the Guyana Shield…”
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#Miocene #Paleogeography #Palynology #Amazonia #Caquetá #paleobiogeography #Columbia #Amazon #jungle #geomorphology #neogene #uplift #geology #structuralgeology #tectonics #Chiribiquete #tabletopmountains #Andes #GuyanaShield #dating #isotopes #biome #ecosystem #tepui #elevation #sedimentology #stratigraphy #Araracuara #fluvial #lacustrine #deposition orogeny #regional #uplift #drainage #hydrography #hydrology #river #network #GIS #spatial #mapping #spatialanalysis #spatiotemporal #geophysics #seismology

What Shapes Earthquake Risk In Bangladesh? Geospatial Insights From Physical And Social Factors Using A Spatial Meta-Regression Approach
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https://doi.org/10.1007/s41748-026-01089-4 <-- shared paper
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#EarthquakeRisk #GIS #Bangladesh #DisasterManagement #SEAsia #GIS #spatial #mapping #risk #hazard #earthquake #naturalhazard #urban #rural #infrastructure #publicsafety #model #modeling #spatialanalysis #spatiotemporal #geomorphology #geology #tectonics #social #cultural #demographics #fault #faulting #factoranalysis #seismichazard #model #modeling #socioeconomics #geophysics #remotesensing #geostatistics #landuse #framework #magnitude #engineering #buildingcode #mitigation #zoning #development #growth #vulnerability

Mapping of Closed Depressions in Karst Terrains - A GIS-Based Delineation of Endorheic Catchments in the Alburni Massif (Southern Apennine, Italy)
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https://doi.org/10.3390/hydrology12070186 <-- shared paper 🔗
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#doline #poljes #endorheic #karst #GIS #spatial #mapping #DEM #spatialanalysis #geomorphometry #morphometry #remotesensing #glacial #proglacial #glacier #tectonics #geology #water #hydrography #hydrology #hydrogeomorphic #groundwater #surfacewater #closeddepressions #overland #epigenic #subsurface #hypogenic #flow #landform #geomorphology #AlburniMassif #Apennines #Italy #spatialanalysis #elevation #geostatistics #structuralgeology #waterresources #watermanagement #recharge #modeling #tracertest #dyetest #mapping

Timing And Style Of Tectonic Assembly And Exhumation Of The Mchugh Complex Within The Chugach-Kodiak Accretionary Wedge, Alaska
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https://doi.org/10.1029/2025TC009004 <-- shared paper
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https://discoveryalert.com.au/chugach-prince-william-terrain-geology-alaska-2025 <-- shared technical article
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[this paper is WAY over my head in terms of the nuance of structural geology, but still fascinating; further, I have to say: these are TRULY gorgeous, well-designed & presented, and useful geologic maps, cross-sections, annotated photographs and other visualisations (I am jealous of that level of skill, in the BEST of ways!)]
#geology #structuralgeology #fieldwork #geologic #mapping #KenaiPeninsula #McHughComplex #tectonics #underplating #faulting #subduction #erosion #Exhumation #ChugachKodiak #AccretionaryWedge #Alaska #coast #coastal #mineralogy #transects #crosssections #model #modeling #sampling #spectroscopy #accretionary #accretionarymargin #plateboundary #trench #interpretation #peneplanation #forearc

#QuizOfTheDay: Plate #Tectonics is the generally accepted scientific theory that considers the Earth's lithosphere to comprise a number of large tectonic plates which have been slowly moving since about 3.4 billion years ago.

How many major Tectonic Plates are there?

A. 5
B. 6
C. 7
D. 8

https://knowledgezone.co.in/resources/quiz?qId=6360c89b4387a56690a30cbb

Last night was our second lecture of the MSHI Volcano Naturalist program. The title of the lecture was Volcanos 101. The starting point was plate tectonics then burrowing into the regional setting. Then a focus on igneous rocks, petrology, minerology, geochemistry. It’s a complicated topic but was presented well. I can see it being very challenging and difficult to visualize for someone who has never had a class in geology. #geology #volcano #tectonics #Cascades #PNW #igneous

Plate #tectonics represents a defining framework of modern #geoscience, accounting for large-scale features on Earth’s surface, such as mountains and valleys, as well as the processes that shape them, like volcanoes and earthquakes.

Present-day plate tectonics have not been observed on any other world in the solar system, and evidence of past activity on planets such as #Mars and #Venus is circumstantial.

Perhaps the best case for extraterrestrial plate tectonics is found in the floating ice shell of #Jupiter’s #moon #Europa.

The plate tectonics on Europa differs from its Earthly analog. It is spatially widespread; it is regionally confined rather than globally connected; it occurs intermittently and is not happening now; and during past activity, plates drifted limited distances of between 10 and 100 kilometers.

#planets
https://eos.org/research-spotlights/europas-plate-tectonic-activity-is-unlike-earths

Paper by Collins et al. (2022):
https://doi.org/10.1029/2022JE007492

#WeekendReading: Mangano et al., about the shift from extension to strike-slip #tectonics in the Central Mediterranean.

Link: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2025TC009054

A Study Debunks [sic] Decades Of Scientific Research - Underwater Canyons Are NOT Created By Rivers… And The Explanation Is Brutal
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https://www.ecoticias.com/en/a-study-debunks-decades-of-scientific-research-underwater-canyons-are-not-created-by-rivers-and-the-explanation-is-brutal/24721/ <-- shared technical article
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https://doi.org/10.1126/sciadv.adv3942 <-- shared paper #GetNZOnTheMap
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https://blogs.egu.eu/divisions/nh/2018/02/05/twenty-or-more-leagues-under-the-sea-a-journey-to-understand-submarine-canyons/ <-- shared interview transcript, “A journey to understand submarine canyons [and their related geohazards]”, European Geosciences Union (EGU.)
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https://www.sustainableseaschallenge.co.nz/our-research/submarine-canyons-connecting-coastal-and-deep-sea-ecosystems <-- shared technical article, “Submarine Canyons - Connecting Coastal And Deep-Sea Ecosystems”
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#spatial #mapping #model #modeling #moprhology #spatialanalysis #tectonics #continentalmargins #submarinecanyons #formation #river #hydrology #massmovement #processes #global #oceanfloor #geology #slumps #currents #seafloor #steepness #debrisflow #geohazard #ecosystems #sediment #movement #infrastructure #damage #valley #marine #underwater #geomorphology #geomorphometry #deepocean # #geostatistics #earthquake #gravity #erosion #continentalslope #biogeochemical #coast #coastal

Satellite Captures The First Detailed Look At A Massive Tsunami
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https://www.earth.com/news/satellite-captures-the-first-detailed-look-at-a-giant-tsunami/ <-- shared technical article
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https://doi.org/10.1785/0320250037 <-- shared paper
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#GIS #spatial #mapping #satellite #remotesensing #earthobservation #geology #tectonics #Kuril #Kamchatka #Russia #Pacific #tsunami #NASA #SWOT #energy #dissipation #risk #hazard #model #modeling #DART #buoy #observation #instrumentation #waveforms #propogation #geodetic #spatialanalysis #spatiotemporal #marine #wave #megathrust #rupture #mechanics #altimetry #forecasting #hydrodynamic

⏰🌍 Researchers examine the near-impossible challenge of preserving a time capsule through deep geological time, demonstrating how plate #tectonics continuously destroys and recreates #Earth's surface over millions of years.

👉 https://www.scientificamerican.com/article/can-a-buried-time-capsule-beat-earths-geology-and-deep-time/

#geology #science #research #minerals #future

Mid-Proterozoic Expansion Of Passive Margins And Reduction In Volcanic Outgassing Supported Marine Oxygenation And Eukaryogenesis
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https://doi.org/10.1016/j.epsl.2025.119683 <-- shared paper
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https://zenodo.org/records/17353904 <-- supplementary data
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#proterozoic #platetectonics #tectonics #deepcarboncycle #eukaryogenesis #evolutionoflife #life #evolution #geology #geologichistory #pangea #supercontinent #diversification #volcanic #offgassing #marine #thermodynamics #model #modeling #spatialanalysis #spatiotemporal #nuna #subduction #structuralgeology #CO2 #carbondioxide #climate #eukaryotic #BoringBillion #rodinia #oceanbasins #marinechemistry #outgassing #global #earth

Time for #supercontinent #Nuna triggering #life https://www.popularmechanics.com/science/environment/a69367718/boring-billion-complex-life/ My take on plate #tectonics and #evolution here https://nkozphoto.com/index.php/2025/11/05/earthquakes-evolution-and-darwins-exploits-in-chile/ #darwin #chile #toba #science #earthquake #earthquakes