#lithosphere — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #lithosphere, aggregated by home.social.
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A gorgeous thin section of a xenolith-rich lamprophyre dyke from near Ayer's Cliff, Quebec (Cretaceous, Monteregian-age, so ~120 Ma). Pelitic crustal assemblages equilibrated at 700-800°C and 8-10 kbar, while we're currently studying the lherzolite mantle xenolith (above and right of center), which is likely Grenville (~ 1 Ga) in age. Image by Justin Plouffe, #McGillUniversity
#ThinSectionThursday #Quebec #Lithosphere #Grenville #Xenolith
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This mill initiated a massive feedback loop, transferring vast quantities of carbon long sequestered in the lithosphere directly into the atmosphere. The speed of this transition is structurally unprecedented; by 1831—a mere 60 years later—the isotopic signatures of global warming were already clearly recorded in the Arctic and tropical marine surface temperatures, showing how fast the anomaly took hold. -
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Structural Architecture: The 5 Spheres of Earth
Earth system scientists traditionally view the planet as a complex, interconnected machine composed of four interacting load-bearing components, or "spheres:"1. The #Lithosphere: The Earth's crust, solid rock, shifting tectonic plates, mountains, and ocean floors. It functions as a physical foundation and holds massive, slow-moving reservoirs of carbon and essential minerals.
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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 -
The Cascadia Subduction Zone Isn’t Shutting Down – But It’s More Complicated Than We Thought
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https://theconversation.com/the-cascadia-subduction-zone-isnt-shutting-down-but-its-more-complicated-than-we-thought-279730 <-- shared technical article
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https://doi.org/10.1126/sciadv.ady8347 <-- shared paper
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#SciComm #ScienceCommunication #Earthquakes #engineeringgeology #geology #risk #hazard #fault #faulting #Vancouver #VancouverIsland #BritishColumbia #Seattle #OlympicPeninsula #PugetSound #WashingtonState #PNW #PacificNorthwest #NorthAmerica #plateboundary #subduction #platetectonics #spatialanalysis #spatiotemporal #seismicity #seismic #geophysics #offshore #remotesensing #Cascadia #CascadiaSubductionZone #mechanics #lithosphere## -
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This is equally true in the #biotic environment (the “#biosphere”), consisting of microorganisms, plants, animals, and the human body; in #abiotic (lifeless) environments, such as the #geosphere, the #lithosphere, the #hydrosphere, and the #atmosphere; and in the entire #ecosphere, comprising ecosystems composed of biotic and abiotic elements in complex interrelationships. Such ecosystems, large and small, for all their components, also interact in intricate mutual relationships. -
Andrew Frederiksen (U. Manitoba) gave us a very clear explanation of a better way to analyze shear-wave splitting as a way to probe the fabric (heterogeneities) of the upper mantle under continents.
The red and orange contours of large split times in British Columbia represent aligned olivine from present-day horizontal mantle flow. Splitting in Alberta represents fabrics formed and preserved from the Precambrian.
#UManitoba #McGillUniversity #Seismology #Lithosphere #Mantle #Olivine
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Aufeis (Earth sciences 🌍)
Aufeis is a sheet-like mass of layered ice that forms from successive flows of ground or river water during freezing temperatures. This form of ice is also called overflow, icings, or the Russian term, naled. The term "Aufeis" was first used in 1859 by Alexander von Middendorff following his observations of the phenomenon in northern Siberia. When t...
https://en.wikipedia.org/wiki/Aufeis
#Aufeis #WaterIce #Glaciology #Lithosphere #EarthSciences #GeographyOfTheArctic
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Weak Asthenosphere Beneath The Eurasian Interior Inferred From Aral Sea Desiccation
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https://doi.org/10.1038/s41561-025-01664-w <-- shared paper
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#GIS #spatial #mapping #remotesensing #earthobservation #inSAR #AralSea #rebound #isostaticrebound #asthenosphere #geology #structuralgeology #mantle #crust #weight #rheology #spatialanalysis #spatiotemporal #continent #desiccation #loss #drying #water #hydrology #elastic #viscoelastic #model #modeling #uplift #lithosphere #humanimpacts #tectonic -
How Did The Great Lakes Form? Scientists Think They Figured It Out
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https://www.earth.com/news/how-did-the-great-lakes-form-surprising-new-clues-have-emerged/#google_vignette <-- shared technical link
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https://doi.org/10.1029/2024GL110777 <-- shared paper
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#geology #mapping #structuralgeology #USA #Canada #GreatLakes #NorthAmerica #CapeVerde #hotspot #tectonics #magma #Superior #Michigan #Huron #Erie #Ontario #freshwater #lake #mantle #formation #pangaea #supercontinent #remotesensing #geophysics #continent #kimberlites #seismicvelocitymodel #model #modeling #plume #lithosphere #glacial #glacier #anisotropy -
Deep Beneath California's Sierra Nevada, Earth's Lithosphere May Be Peeling Away
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https://phys.org/news/2025-01-deep-beneath-california-sierra-nevada.html <-- shared technical article
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https://doi.org/10.1029/2024GL111290 <-- shared paper
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#GIS #spatial #mapping #geology #lithosphere #California #SierraNevada #continentalcrust #crust #mantle #foundering #remotesensing #geophysics #geophysical #earthquake #spatialanalysis #spatiotemporal #structuralgeology #earthquake #seismic #seismology #Moho #platetectonics #tectonics #shearzone #faults #faulting #seismicity #model #modeling #3dmodel -
These Revolutionary Maps Are Revealing Earth’s Geological Secrets
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https://www.zmescience.com/science/tectonic-model-beatiful-new/ <-- shared technical article
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https://doi.org/10.1016/j.earscirev.2022.104069 <-- shared paper
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#GIS #spatial #mapping #tomography #geology #remotesensing #structuralgeology #plates #platetectonics #earth #global #model #modeling #opendata #opensource #spatialdata #vector #platemodel #mechanics #GPS #earthquakes #volcanoes #topography #orogeny #tectonics #spatiotemporal #spatialanalysis #Pangea #Gondwana #Gondwanaland #ReuniteGondwanaland #Laurasia #lithosphere #crust #mantle #core #geophysics #geochemistry #geochronology #dating #Mesoproterozoic -
Himalayas Formation May Have Destroyed At Least 30% Of Continental Crust In Collision Zone
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https://phys.org/news/2024-11-himalayas-formation-destroyed-continental-crust.html <-- shared technical article
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https://doi.org/10.1016/j.epsl.2024.119070 <-- shared paper
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#geology #structuralgeology #model #modeling #numericmodeling #geochemistry #mountainbuilding #orogeny #Himalayas #continentalcrust #platetectonics #continents #EuropeanAlps #ZagrosMountains #mantle #subsumed #deformation #erosion #thickening #extrusion #massbalance #calculations #delamination #topography #lithosphere -
We are organizing a workshop about "The Deformation of the #Lithosphere" in memory of Paul Tapponnier. Held in Paris, France, in February 12-14, 2025, et the Académie des Sciences and IPGP.
Infos and registration (open Oct 14th) here:
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A Rockslide-Generated Tsunami In A Greenland Fjord Rang Earth For 9 Days
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https://doi.org/10.1126/science.adm9247 <-- shared paper
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#GIS #spatial #mapping #seiche #tsunami #model #modeling #observation #massmovement #engineeringgeology #debrisflow #landslide #massmovement #risk #hazard #spatialanalysis #spatiotemporal #Greenland #seismic #seismology #DicksonFjord #fjord #rockslide #climatechange #standingwaves #cryosphere #hydrosphere #masswasting #geomorphology #geomorphometry #tsunamigenic #glacier #glacial #melting #amplitude #lithosphere #naturalhazard -
The Craton Enigma - Scientists Propose a New Continental Formation Theory
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https://scitechdaily.com/the-craton-enigma-scientists-propose-a-new-continental-formation-theory/ <-- shared technical article
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https://doi.org/10.1038/s41586-024-07307-1 <-- shared paper
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#GIS #spatial #mapping #geology #structuralgeology #cratons #craton #planetary #evolution #platetectonics #earth #structure #geologicalhistory #cooling #rock #weathering #erosion #water #Archaean #continental #crust #mantle #landmasses #continentalcrust #subaerial #magma #terrigenous #sediments #sedimentation #lithosphere -
Geoscientists Find Pacific Plate Is Scored By Large Undersea Faults That Are Pulling It Apart
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https://phys.org/news/2024-02-geoscientists-pacific-plate-scored-large.html <-- shared technical article
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https://doi.org/10.1029/2023GL105452 <-- shared paper
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#GIS #spatial #mapping #geology #pacific #pacificocean #structuralgeology #platetectonics #tectonics #oceanplates #subduction #remotesensing #geophysics #lithosphere #crust #mantle #model #modeling #spatialanalysis #extension #syndrift #faults #faulting #seismology #geochemistry #WesternPacific -
New Geological Study Shows Scandinavia Was Born In Greenland
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https://phys.org/news/2024-03-geological-scandinavia-born-greenland.html <-- shared technical article
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https://doi.org/10.1130/G51658.1 <-- shared paper
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“The oldest Scandinavian bedrock was "born" in Greenland according to a new geological study from the University of Copenhagen. The study helps us understand the origin of continents and why Earth is possibly the only planet in our solar system with life..."
#geology #structuralgeology #Scandinavia #greenland #finland #research #crust #mantle #zircon #gneiss #denmark #craton #lithosphere #shield #FennoscandianShield #Archean #Eoarchean #NorthAtlanticcraton #geologymap #mapping -
Box Tomography - First Application To The Imaging Of Upper-Mantle Shear Velocity And Radial Anisotropy Structure Beneath The North American Continent
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https://doi.org/10.1093/gji/ggy078 <-- shared paper
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#GIS #spatial #mapping #USA #NorthAmerica #geology #structuralgeology #EarthScope #EarthScopeTranspotableArray #array #remotesensing #monitoring #CONUS #seismology #seismicvelocity #tomography #model #modeling #numericmodeling #mantle #crust #subsurface #geophysics #lithosphere #asthenosphere #teleseismic #wavefield #BoxTomography #computing #archean #continent #cratonic #cratons #LVZ #3d #spatialanalysis -
Wednesday, early afternoon posters at #AGU23
MR31B-0084 Effects of melt-rock interactions on deformation fabrics and rock physical properties in the shallow mantle lithosphere
James Kirkpatrick presenting, but this is the the M.Sc. work of Arvid Gonzalez (now core-logging in n. QC). Other authors are myself and Caroline Seyler (U. Minnesota).Arvid found that infiltrating mafic melt reduces the preserved strain in mantle olivine.
#McGillUniversity #Mantle #EBSD #Xenolith #Lithosphere #Olivine -
New Maps Of Global Geological Provinces And Tectonic Plate
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https://doi.org/10.1016/j.earscirev.2022.104069 <-- shared paper
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#GIS #spatial #mapping #tectonicplate #tectonicprovince #orogenicsystem #orogeny #geodynamics #spatialanalysis #geology #structuralgeology #tectonics #platetectonics #global #earth #opendata #spatialdata #GPS #earthquakes #volcanoes #topography #elevation #model #modeling #crust #mantle #geoscience #lithosphere #faults #faulting #geochronology #deformationzones #GitHub -
Achieving Sustainable Earth Futures in the Anthropocene by Including Local Communities in Critical Zone Science
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https://doi.org/10.1029/2022EF003448 <-- shared paper
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#GIS #spatial #mapping #hydrology #water #atmosphere #hydrosphere #soil #biosphere #lithosphere #soil #communityinvolvement #community #communityengagement #remotesensing #sustainability #farming #agriculture #anthropocene #criticalzonescience #transdiscipline #global #monitoring #model #modeling #landscape #humanimpact #humanimpacts #watersecurity #foodsecurity #farmingpractices #naturalsystems #ecosystems #geomorphology #China #UN #UnitedNations #SustainableDevelopmentGoals -
New Geological Study Rewrites History Of The World's Highest Peaks
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https://www.forbes.com/sites/davidbressan/2023/08/15/new-geological-study-rewrites-history-of-the-worlds-highest-peaks/ <-- shared media article
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https://doi.org/10.1038/s41561-023-01243-x <-- shared paper
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#GIS #spatial #mapping #remotesensing #uplift #Himalayas #tibet #model #modeling #research #uplift #sampling #hydrothermal #oxygenisotopes #India #Eurasia #mountains #geology #structuralgeology #TibetanPlateau #palaeoaltimetry #palaeoelevation #geodynamic #palaeoclimate #GangdeseArc #subduction #lithosphere #continentalcollision -
Long-Lost Remnants Of Ancient Continents Still Lurk Beneath Antarctica
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https://www.iflscience.com/long-lost-remnants-of-ancient-continents-still-lurk-beneath-antarctica-69572 <-- shared technical article
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https://doi.org/10.1038/s41598-018-34733-9 <-- shared paper
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#GIS #spatial #mapping #remotesensing #satellite #GOCE #gravity #seismology #antarctica #cratons #lithosphere #continents #gravitygradients #model #modeling #tectonics #geology #structuralgeology #platetectonics #orogen #earthhistory #geologichistory
@ESA -
"Most earthquakes in Britain are concentrated within a north-to-south band on the west side of the island. Neighbouring Ireland, however, is almost completely free from seismic activity – a phenomenon that has puzzled scientists for hundreds of years." Sergei Lebedev
https://theconversation.com/why-earthquakes-happen-all-the-time-in-britain-but-not-in-ireland-207695
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Excellent talk last week by Hannah Mark, now at Woods Hole on documenting thin lithosphere and low viscosities essential to model ice distribution over time in the southern Andes. Figure shows seismic velocities, with red corresponding to slow (hot) mantle. More info: https://essopenarchive.org/doi/full/10.1002/essoar.10510075.1
#McGillUniversity #WHOI #EarthSystemScience #Seismology #Lithosphere
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Post-Subduction Tectonics Induced By Extension From A Lithospheric Drip
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https://doi.org/10.1038/s41561-023-01201-7 <-- shared paper
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#GIS #spatial #mapping #formation #mechanical #data #geology #structuralgeology #platetectonics #subduction #tectonics #lithosphere #model #modeling #Borneo #magmatism #topography #uplift #Malysia #spatialanalysis #remotesensing #seismology #seismic #geophysics #gravity #gravational #volcanic #vulcanism #arc #simulation #simulations #crust #mantle #continent #orogeny