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💧🌏 Greg CocksThe GEOROC Database (Geochemistry of Rocks of the Oceans and Continents) -- <a href="https://georoc.eu/georoc/new-start.asp" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://georoc.eu/georoc/new-start.asp</a> <-- shared link to GEOROC resource -- H/T Paul Cleverley glasses curly blonde hair “The GEOROC Database (Geochemistry of Rocks of the Oceans and Continents) is a comprehensive collection of published analyses of igneous and metamorphic rocks and minerals. It contains major and trace element concentrations, radiogenic and nonradiogenic isotope ratios as well as analytical ages for whole rocks, glasses, minerals and inclusions. Metadata include geospatial and other sample information, analytical details and references…. Current content of GEOROC: • 22,750 papers • 685,660 samples • 2,680,100 analyses • 39,334,100 single data values…” <a href="https://techhub.social/tags/opendata" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#opendata</a> <a href="https://techhub.social/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://techhub.social/tags/geoscience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geoscience</a> <a href="https://techhub.social/tags/GEOROC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GEOROC</a> <a href="https://techhub.social/tags/database" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#database</a> <a href="https://techhub.social/tags/global" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#global</a> <a href="https://techhub.social/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://techhub.social/tags/metamorphic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#metamorphic</a> <a href="https://techhub.social/tags/rocks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rocks</a> <a href="https://techhub.social/tags/minerals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#minerals</a> <a href="https://techhub.social/tags/geochemistry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geochemistry</a> <a href="https://techhub.social/tags/results" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#results</a> <a href="https://techhub.social/tags/analyses" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#analyses</a> <a href="https://techhub.social/tags/published" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#published</a> <a href="https://techhub.social/tags/metadata" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#metadata</a> <a href="https://techhub.social/tags/spatial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#spatial</a> <a href="https://techhub.social/tags/GIS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GIS</a> <a href="https://techhub.social/tags/mapping" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mapping</a> <a href="https://techhub.social/tags/papers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#papers</a> <a href="https://techhub.social/tags/samples" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#samples</a> <a href="https://techhub.social/tags/datavalues" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#datavalues</a>

Tourmaline Queen 💅Geology is just another way of saying “rock-based double entendres” Also yes my masters project was looking at hot dykes down a lens (oceanic crust alteration veins, behave) <a href="https://pixelfed.social/discover/tags/geology?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://pixelfed.social/discover/tags/meme?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#meme</a> <a href="https://pixelfed.social/discover/tags/cat?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#cat</a> <a href="https://pixelfed.social/discover/tags/igneous?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://pixelfed.social/discover/tags/hot?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#hot</a>

💧🌏 Greg CocksScientists Unveil Mysterious Origins Of Earth’s Largest Igneous Rocks -- <a href="https://scitechdaily.com/scientists-unveil-mysterious-origins-of-earths-largest-igneous-rocks/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://scitechdaily.com/scientists-unveil-mysterious-origins-of-earths-largest-igneous-rocks/</a> <-- shared technical article -- <a href="https://doi.org/10.1126/sciadv.adn3976" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://doi.org/10.1126/sciadv.adn3976</a> <-- shared paper -- <a href="https://techhub.social/tags/GIS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GIS</a> <a href="https://techhub.social/tags/spatial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#spatial</a> <a href="https://techhub.social/tags/mapping" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mapping</a> <a href="https://techhub.social/tags/spatialanalysis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#spatialanalysis</a> <a href="https://techhub.social/tags/spatiotemporal" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#spatiotemporal</a> <a href="https://techhub.social/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://techhub.social/tags/structuralgeology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#structuralgeology</a> <a href="https://techhub.social/tags/earth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#earth</a> <a href="https://techhub.social/tags/global" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#global</a> <a href="https://techhub.social/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://techhub.social/tags/vulcanism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#vulcanism</a> <a href="https://techhub.social/tags/massif" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#massif</a> <a href="https://techhub.social/tags/anorthosite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#anorthosite</a> <a href="https://techhub.social/tags/origin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#origin</a> <a href="https://techhub.social/tags/formation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#formation</a> <a href="https://techhub.social/tags/morphology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#morphology</a> <a href="https://techhub.social/tags/platetectonics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#platetectonics</a> <a href="https://techhub.social/tags/subduction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#subduction</a> <a href="https://techhub.social/tags/crust" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#crust</a> <a href="https://techhub.social/tags/mantle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mantle</a> <a href="https://techhub.social/tags/Grenvilleorogen" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Grenvilleorogen</a> <a href="https://techhub.social/tags/orogeny" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#orogeny</a> <a href="https://techhub.social/tags/geochemistry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geochemistry</a> <a href="https://techhub.social/tags/mineralogy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mineralogy</a> <a href="https://techhub.social/tags/magma" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#magma</a> <a href="https://techhub.social/tags/oceaniccrust" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#oceaniccrust</a> <a href="https://techhub.social/tags/model" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#model</a> <a href="https://techhub.social/tags/modeling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#modeling</a> <a href="https://techhub.social/tags/petrogensis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#petrogensis</a>

John Faithfull 🌍🇪🇺🏴󠁧󠁢󠁳󠁣󠁴󠁿🧡✊🏻✊🏿The crystallization of large replenished magma bodies is amazingly complex. The photos of layered rocks from the Bushveld Complex in this new <a href="https://mastodon.scot/tags/OpenAccess" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OpenAccess</a> paper are mind-bogglingly wonderful 🤩 🤯 🤓 . The wider applicability of their conclusions might be disputed by some, but good stuff though! <a href="https://doi.org/10.1016/j.lithos.2024.107621" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://doi.org/10.1016/j.lithos.2024.107621</a> <a href="https://mastodon.scot/tags/Geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Geology</a> <a href="https://mastodon.scot/tags/Igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Igneous</a> <a href="https://mastodon.scot/tags/LayeredIntrusions" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#LayeredIntrusions</a>

Bob DownieMy two minor obsessions captured at the same moment. Here are pictures of my favourite bicycle, an old school build using a custom <a href="https://mastodon.scot/tags/DaveYates" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DaveYates</a> frame, resting against my favourite rock, a beautifully smooth <a href="https://mastodon.scot/tags/glacial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glacial</a> erratic composed of a very hard, fine grained, mid grey <a href="https://mastodon.scot/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> rock with pale mm-cm sized plagioclase phenocrysts. Generations of bottoms have enhanced the glacial smoothing 🙂. Located in <a href="https://mastodon.scot/tags/MaxwellPark" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MaxwellPark</a> <a href="https://mastodon.scot/tags/Glasgow" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Glasgow</a> <a href="https://mastodon.scot/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://mastodon.scot/tags/cycling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cycling</a>

💧🌏 Greg CocksMagma And Mountain Building At The Columbia River Gorge -- <a href="https://www.earthscope.org/news/magma-and-mountain-building-at-the-columbia-river-gorge/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.earthscope.org/news/magma-and-mountain-building-at-the-columbia-river-gorge/</a> <-- shared technical article -- <a href="https://doi.org/10.1126/sciadv.adj3357" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://doi.org/10.1126/sciadv.adj3357</a> <-- shared paper -- <a href="https://techhub.social/tags/GIS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GIS</a> <a href="https://techhub.social/tags/spatial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#spatial</a> <a href="https://techhub.social/tags/mapping" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mapping</a> <a href="https://techhub.social/tags/remotesensing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#remotesensing</a> <a href="https://techhub.social/tags/GPS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GPS</a> <a href="https://techhub.social/tags/geophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geophysics</a> <a href="https://techhub.social/tags/subductionzone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#subductionzone</a> <a href="https://techhub.social/tags/plateboundary" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#plateboundary</a> <a href="https://techhub.social/tags/PNW" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PNW</a> <a href="https://techhub.social/tags/Oregon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Oregon</a> <a href="https://techhub.social/tags/columbiariver" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#columbiariver</a> <a href="https://techhub.social/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://techhub.social/tags/structuralgeology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#structuralgeology</a> <a href="https://techhub.social/tags/model" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#model</a> <a href="https://techhub.social/tags/modeling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#modeling</a> <a href="https://techhub.social/tags/vulcanism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#vulcanism</a> <a href="https://techhub.social/tags/volcanic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#volcanic</a> <a href="https://techhub.social/tags/magma" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#magma</a> <a href="https://techhub.social/tags/fieldwork" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#fieldwork</a> <a href="https://techhub.social/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://techhub.social/tags/platetectonics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#platetectonics</a> <a href="https://techhub.social/tags/uplift" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#uplift</a> <a href="https://techhub.social/tags/compression" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#compression</a> <a href="https://techhub.social/tags/extension" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#extension</a> <a href="https://techhub.social/tags/geologicmapping" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geologicmapping</a> <a href="https://techhub.social/tags/geologic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geologic</a> <a href="https://techhub.social/tags/orogeny" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#orogeny</a> <a href="https://techhub.social/tags/mountains" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mountains</a> <a href="https://techhub.social/tags/mountainbuilding" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mountainbuilding</a>

💧🌏 Greg CocksReconnaissance Basement Geology and Tectonics of South Zealandia -- <a href="https://doi.org/10.1029/2018TC005116" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://doi.org/10.1029/2018TC005116</a> <-- shared paper -- <a href="https://techhub.social/tags/GIS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GIS</a> <a href="https://techhub.social/tags/spatial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#spatial</a> <a href="https://techhub.social/tags/mapping" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mapping</a> <a href="https://techhub.social/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://techhub.social/tags/structuralgeology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#structuralgeology</a> <a href="https://techhub.social/tags/geologicmapping" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geologicmapping</a> <a href="https://techhub.social/tags/NewZealand" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NewZealand</a> <a href="https://techhub.social/tags/Zealandia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Zealandia</a> <a href="https://techhub.social/tags/remotesensing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#remotesensing</a> <a href="https://techhub.social/tags/magnetic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#magnetic</a> <a href="https://techhub.social/tags/reconnaissance" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#reconnaissance</a> <a href="https://techhub.social/tags/basement" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#basement</a> <a href="https://techhub.social/tags/tectonics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tectonics</a> <a href="https://techhub.social/tags/SouthZealandia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SouthZealandia</a> <a href="https://techhub.social/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://techhub.social/tags/batholith" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#batholith</a> <a href="https://techhub.social/tags/magneticanomaly" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#magneticanomaly</a> <a href="https://techhub.social/tags/continent" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#continent</a> <a href="https://techhub.social/tags/seafloor" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#seafloor</a> <a href="https://techhub.social/tags/bathymetry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#bathymetry</a> <a href="https://techhub.social/tags/orogeny" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#orogeny</a> <a href="https://techhub.social/tags/gondwana" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#gondwana</a> #<a href="https://techhub.social/tags/gondwanaland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#gondwanaland</a> <a href="https://techhub.social/tags/sampling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sampling</a> <a href="https://techhub.social/tags/hikurangi" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#hikurangi</a> <a href="https://techhub.social/tags/forearcbasin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#forearcbasin</a> <a href="https://techhub.social/tags/forearc" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#forearc</a> <a href="https://techhub.social/tags/boreholes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#boreholes</a> <a href="https://techhub.social/tags/dredging" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#dredging</a> <a href="https://techhub.social/tags/faulting" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#faulting</a> <a href="https://techhub.social/tags/faults" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#faults</a> <a href="https://techhub.social/tags/gravity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#gravity</a> <a href="https://techhub.social/tags/seismic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#seismic</a> <a href="https://techhub.social/tags/seismology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#seismology</a> <a href="https://techhub.social/tags/renunitegondwanaland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#renunitegondwanaland</a> <a href="https://techhub.social/tags/geophysics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geophysics</a>

Chris WhiteTwinned <a href="https://sciencemastodon.com/tags/feldspar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#feldspar</a> crystals In a paving stone in <a href="https://sciencemastodon.com/tags/Exeter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Exeter</a>, United Kingdom, pound coin for scale. Must have cooled slowly, allowing large crystals to grow, so <a href="https://sciencemastodon.com/tags/intrusive" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#intrusive</a>, not <a href="https://sciencemastodon.com/tags/extrusive" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#extrusive</a> / <a href="https://sciencemastodon.com/tags/volcanic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#volcanic</a>. My <a href="https://sciencemastodon.com/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photo</a> of an <a href="https://sciencemastodon.com/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://sciencemastodon.com/tags/mineral" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mineral</a> because I like <a href="https://sciencemastodon.com/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a>

💧🌏 Greg CocksGeoscientists Discover Massive Undersea Water Reservoir Off New Zealand’s Coast -- <a href="https://www.sci.news/othersciences/geophysics/hikurangi-water-reservoir-12323.html" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.sci.news/othersciences/geophysics/hikurangi-water-reservoir-12323.html</a> <-- shared technical article -- <a href="https://doi.org/10.1126/sciadv.adh0150" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://doi.org/10.1126/sciadv.adh0150</a> <-- shared paper -- <a href="https://techhub.social/tags/GIS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GIS</a> <a href="https://techhub.social/tags/spatial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#spatial</a> <a href="https://techhub.social/tags/mapping" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mapping</a> <a href="https://techhub.social/tags/remotesensing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#remotesensing</a> <a href="https://techhub.social/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://techhub.social/tags/structuralgeology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#structuralgeology</a> <a href="https://techhub.social/tags/NewZealand" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NewZealand</a> <a href="https://techhub.social/tags/model" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#model</a> <a href="https://techhub.social/tags/modeling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#modeling</a> <a href="https://techhub.social/tags/megathrust" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#megathrust</a> <a href="https://techhub.social/tags/fault" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#fault</a> <a href="https://techhub.social/tags/faulting" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#faulting</a> <a href="https://techhub.social/tags/subduction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#subduction</a> <a href="https://techhub.social/tags/water" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#water</a> <a href="https://techhub.social/tags/groundwater" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#groundwater</a> <a href="https://techhub.social/tags/Hikurangi" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Hikurangi</a> <a href="https://techhub.social/tags/hydrogeology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#hydrogeology</a> <a href="https://techhub.social/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://techhub.social/tags/vulcanism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#vulcanism</a> <a href="https://techhub.social/tags/volcaniclastic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#volcaniclastic</a> <a href="https://techhub.social/tags/seamounts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#seamounts</a> <a href="https://techhub.social/tags/marine" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#marine</a> <a href="https://techhub.social/tags/bathymetry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#bathymetry</a> <a href="https://techhub.social/tags/seafloor" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#seafloor</a> <a href="https://techhub.social/tags/volcanicplateau" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#volcanicplateau</a> <a href="https://techhub.social/tags/subductionzone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#subductionzone</a> <a href="https://techhub.social/tags/seismicimaging" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#seismicimaging</a> <a href="https://techhub.social/tags/seismic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#seismic</a> <a href="https://techhub.social/tags/earthquake" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#earthquake</a> <a href="https://techhub.social/tags/slowslip" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#slowslip</a> <a href="https://techhub.social/tags/tectonics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tectonics</a> <a href="https://techhub.social/tags/geoscience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geoscience</a>

Shantell PowellI’m on my way back home from the Maritimes. Here’s a shot of Grand Falls in New Brunswick. What an incredible bit of white water and geological prehistory. <a href="https://c.im/tags/waterfall" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#waterfall</a> <a href="https://c.im/tags/gorge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#gorge</a> <a href="https://c.im/tags/NewBrunswick" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NewBrunswick</a> <a href="https://c.im/tags/GrandFalls" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GrandFalls</a> <a href="https://c.im/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://c.im/tags/Stratified" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Stratified</a> <a href="https://c.im/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a>

BrownsBayRock on the beach at Barnum Point, Camano Island, WA. Looks like a granodiorite peppered with xenoliths. Igneous petrologists chime in. Likely weathered out of the till that caps the bluffs or a dropstone from floating ice on marine water incursion during the Everson interstade. Source rock provenance not known. Ref. Geologic map of the Juniper Beach 7.5-minute quadrangle, WDGER Geologic Map GM70. <a href="https://pnw.zone/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://pnw.zone/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://pnw.zone/tags/xenolith" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#xenolith</a> <a href="https://pnw.zone/tags/iceage" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#iceage</a> <a href="https://pnw.zone/tags/glaciation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glaciation</a> <a href="https://pnw.zone/tags/intrusive" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#intrusive</a> <a href="https://pnw.zone/tags/PNW" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PNW</a> <a href="https://pnw.zone/tags/washingtonstate" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#washingtonstate</a> <a href="https://pnw.zone/tags/CamanoIsland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CamanoIsland</a>

attresa.geoThe first attempt to <a href="https://ravenation.club/tags/photograph" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photograph</a> <a href="https://ravenation.club/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> and <a href="https://ravenation.club/tags/volcanic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#volcanic</a> <a href="https://ravenation.club/tags/rocks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rocks</a> samples. There are many more bugs. Canon 80D + macro lens + microscope with analyzer.<a href="https://ravenation.club/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://ravenation.club/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photography</a> <a href="https://ravenation.club/tags/minerals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#minerals</a>

AnthropoceneManThough not perfectly developed in the Mt. Ashland Pluton, the leucocratic granite pegmatites near the summit display a weakly graphic texture.“Graphic granite is a leucocratic granitic rock consisting of alkali feldspar with exsolved quartz typically forming a distinctive repetitive pattern sometimes resembling cuneiform writing. Experiments have shown that graphic granite texture is derived from large single crystals of quartz and feldspar interleaving to create the cuneiform illusion.”Wikipedia In this sample, the development of the texture has been explained as an immiscibility between the two primary crystallizing components (quartz and feldspar) and the remaining magma…while others explain it as the nucleation and growth of quartz, controlled by the host feldspar, which supports the simultaneous growth of quartz and feldspar that results in the graphic granite texture.So, are they fighting or in partnership?<a href="https://universeodon.com/tags/Geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Geology</a> <a href="https://universeodon.com/tags/Crystals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Crystals</a> <a href="https://universeodon.com/tags/Minerals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Minerals</a> <a href="https://universeodon.com/tags/Magma" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Magma</a> <a href="https://universeodon.com/tags/Igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Igneous</a> <a href="https://universeodon.com/tags/Oregon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Oregon</a> <a href="https://universeodon.com/tags/PNW" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PNW</a>

Chris WhiteSort of <a href="https://sciencemastodon.com/tags/selfPortrait" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#selfPortrait</a> in <a href="https://sciencemastodon.com/tags/QuincyGranite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#QuincyGranite</a>The spectral form, like Jesus looming out of a piece of toast, is me, taking a <a href="https://sciencemastodon.com/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photo</a> of a circa 1.5 meter polished granite sphere in the <a href="https://sciencemastodon.com/tags/MountWollastonCemetery" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MountWollastonCemetery</a> in <a href="https://sciencemastodon.com/tags/Quincy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Quincy</a>. The largest visible <a href="https://sciencemastodon.com/tags/crystals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#crystals</a> (<a href="https://sciencemastodon.com/tags/feldspar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#feldspar</a> and <a href="https://sciencemastodon.com/tags/amphibole" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#amphibole</a>) are about 1 centimeter across.<a href="https://sciencemastodon.com/tags/Fujifilm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Fujifilm</a> <a href="https://sciencemastodon.com/tags/XH1" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#XH1</a> 23mm f/1.4 @ f/2 and 1/1100 s <a href="https://sciencemastodon.com/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://sciencemastodon.com/tags/stone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#stone</a> <a href="https://sciencemastodon.com/tags/cemetery" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cemetery</a> <a href="https://sciencemastodon.com/tags/Massachusetts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Massachusetts</a> <a href="https://sciencemastodon.com/tags/NewEngland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NewEngland</a> <a href="https://sciencemastodon.com/tags/monument" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#monument</a> <a href="https://sciencemastodon.com/tags/sphere" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sphere</a> <a href="https://sciencemastodon.com/tags/reflectionselfie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#reflectionselfie</a> <a href="https://sciencemastodon.com/tags/reflection" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#reflection</a> <a href="https://sciencemastodon.com/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://sciencemastodon.com/tags/geoscience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geoscience</a> <a href="https://sciencemastodon.com/tags/quarry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#quarry</a>

Chris WhiteNow the more <a href="https://sciencemastodon.com/tags/riebeckite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#riebeckite</a> facies of the <a href="https://sciencemastodon.com/tags/Paleozoic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Paleozoic</a> <a href="https://sciencemastodon.com/tags/Quincy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Quincy</a> <a href="https://sciencemastodon.com/tags/Granite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Granite</a>The Quincy granite was a prized architectural stone, most famously used in the <a href="https://sciencemastodon.com/tags/BunkerHill" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#BunkerHill</a> Monument in <a href="https://sciencemastodon.com/tags/Boston" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Boston</a> <a href="https://sciencemastodon.com/tags/Massachusetts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Massachusetts</a>. Current dating suggests it was intruded into <a href="https://sciencemastodon.com/tags/Avalonia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Avalonia</a> before it glommed onto <a href="https://sciencemastodon.com/tags/Laurentia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Laurentia</a> as <a href="https://sciencemastodon.com/tags/Laurasia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Laurasia</a> and <a href="https://sciencemastodon.com/tags/Pangea" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Pangea</a> were assembled. Today’s <a href="https://sciencemastodon.com/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photo</a> set comes from a walk around the eponymous Bunker Hill Quarry. I’ll post more about the history later. Captions! <a href="https://sciencemastodon.com/tags/Fujifilm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Fujifilm</a> <a href="https://sciencemastodon.com/tags/XH1" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#XH1</a> <a href="https://sciencemastodon.com/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://sciencemastodon.com/tags/intrusive" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#intrusive</a> <a href="https://sciencemastodon.com/tags/NewEngland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NewEngland</a>

Chris WhiteQuincy or <a href="https://sciencemastodon.com/tags/BlueHills" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#BlueHills</a> <a href="https://sciencemastodon.com/tags/Porphyry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Porphyry</a> <a href="https://sciencemastodon.com/tags/Granite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Granite</a> An alkaline, nonorogenic granite intruded into <a href="https://sciencemastodon.com/tags/Avalonia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Avalonia</a> in the <a href="https://sciencemastodon.com/tags/Silurian" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Silurian</a> / <a href="https://sciencemastodon.com/tags/Ordovician" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Ordovician</a> as it cruised from peri-<a href="https://sciencemastodon.com/tags/Gondwana" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Gondwana</a> to <a href="https://sciencemastodon.com/tags/Laurentia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Laurentia</a>, before assembling <a href="https://sciencemastodon.com/tags/Pangea" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Pangea</a> in the <a href="https://sciencemastodon.com/tags/Acadian" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Acadian</a> <a href="https://sciencemastodon.com/tags/Orogeny" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Orogeny</a> (<a href="https://sciencemastodon.com/tags/Devonian" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Devonian</a>). It’s coarse, with the <a href="https://sciencemastodon.com/tags/phenocrysts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#phenocrysts</a> of amphiboles(?) (possibly riebeckite?)…I’m no petrologist. From@the Eaton’s Pond conservation area@at the <a href="https://sciencemastodon.com/tags/Braintree" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Braintree</a> <a href="https://sciencemastodon.com/tags/Quincy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Quincy</a> border. My photos. <a href="https://sciencemastodon.com/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://sciencemastodon.com/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://sciencemastodon.com/tags/Massachusetts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Massachusetts</a> <a href="https://sciencemastodon.com/tags/Boston" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Boston</a> <a href="https://sciencemastodon.com/tags/NewEngland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NewEngland</a> <a href="https://sciencemastodon.com/tags/Fujifilm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Fujifilm</a> <a href="https://sciencemastodon.com/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photo</a>

Jerry D. Harris 🦕👣Entablature (curvy columnar) jointing in basalt along an inverted topographic ridge along Interstate 15 north of St. George, Utah. The lava flow is ~900,000 years old and came from a now long-weathered-away cinder cone volcano (one of many in this corner of Utah). <a href="https://sauropods.win/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://sauropods.win/tags/geoscience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geoscience</a> <a href="https://sauropods.win/tags/utah" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#utah</a> <a href="https://sauropods.win/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://sauropods.win/tags/basalt" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#basalt</a> <a href="https://sauropods.win/tags/naturalhistory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#naturalhistory</a>

Chris White<a href="https://c.im/@vickyveritas" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@vickyveritas</a> I confess I’m not sure what ignimbrite really means, in terms of mineralogy or deposition. But I have a photo of a possible <a href="https://sciencemastodon.com/tags/lapilli" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#lapilli</a> tuff in the <a href="https://sciencemastodon.com/tags/Blackstone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Blackstone</a> Group in <a href="https://sciencemastodon.com/tags/RhodeIsland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RhodeIsland</a> (that I’ve posted before, it’s associated with mafic pillows but appears felsic). <a href="https://sciencemastodon.com/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://sciencemastodon.com/tags/ignimbrite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ignimbrite</a> <a href="https://sciencemastodon.com/tags/fujifilm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#fujifilm</a> <a href="https://sciencemastodon.com/tags/XH1" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#XH1</a> 27mm f/2.8 f/8 1/125 s ISO 800

Chris WhiteWe walked around <a href="https://sciencemastodon.com/tags/Cohasset" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Cohasset</a>, <a href="https://sciencemastodon.com/tags/Massachusetts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Massachusetts</a> <a href="https://sciencemastodon.com/tags/USA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#USA</a> in the unusually warm (50 F, 10 C) “winter” weather here in <a href="https://sciencemastodon.com/tags/NewEngland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NewEngland</a>. This is an (absurdly) prosperous <a href="https://sciencemastodon.com/tags/coastal" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#coastal</a> community just south of <a href="https://sciencemastodon.com/tags/Boston" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Boston</a>. The walk included lovely views across coves and marshes (including <a href="https://sciencemastodon.com/tags/invasive" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#invasive</a> Phragmites australis and <a href="https://sciencemastodon.com/tags/peat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#peat</a> under <a href="https://sciencemastodon.com/tags/native" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#native</a> <a href="https://sciencemastodon.com/tags/Spartina" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Spartina</a>), as well as nice exposures of the > 600 Ma <a href="https://sciencemastodon.com/tags/Dedham" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Dedham</a> <a href="https://sciencemastodon.com/tags/granite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#granite</a>, the <a href="https://sciencemastodon.com/tags/pluton" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#pluton</a> coring most of the <a href="https://sciencemastodon.com/tags/Avalon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Avalon</a> terrane in this area. <a href="https://sciencemastodon.com/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photo</a> <a href="https://sciencemastodon.com/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://sciencemastodon.com/tags/Proterozoic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Proterozoic</a> <a href="https://sciencemastodon.com/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://sciencemastodon.com/tags/saltMarsh" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#saltMarsh</a>

Jerry D. Harris 🦕👣Agathla Peak, a volcanic neck in the Navajo Volcanic Field (along with its more famous cousin, Shiprock), located north of Kayenta, Arizona and just south of Monument Valley. Agathla is composed of volcanic breccia cut by several dikes. It's about 25–30 million years old. <a href="https://sauropods.win/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://sauropods.win/tags/geoscience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geoscience</a> <a href="https://sauropods.win/tags/volcano" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#volcano</a> <a href="https://sauropods.win/tags/igneous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#igneous</a> <a href="https://sauropods.win/tags/arizona" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arizona</a> <a href="https://sauropods.win/tags/naturalhistory" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#naturalhistory</a> <a href="https://sauropods.win/tags/navajo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#navajo</a>

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