Visiting the vent of the 1959 eruption in Kīlauea Iki, Hawaii. #geology #geoetc #volcano #eruption #kilauea #hawaii
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The Devils Coachhouse, New South Wales Australia, is part of the oldest cave system on Earth. #geology #caves #geoetc #jenolan
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The eroded volcanic plugs of the Glasshouse Mountains, Queensland Australia. Evidence of Australias slow passage over a mantle hotspot. #geology #geoetc #volcano #queensland
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Once horizontal, these layers of sandstones and shale formed from turbidity flows on an ancient sea floor that sat between North America and a small plate called Avalonia. When the plates collided these layers were squashed up and exposed. #geology #geoetc #platetectonics #maine
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Lava flowed right through this chainmail fence in Hawaii in 2016. #geology #lava #volcano #geoetc #hawaii
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Dinosaurs display in the American Museum of Natural History , New York. Full of little future paleontologists. #geology #dinosaurs #fossils #newyorkcity #geoetc
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A human trace fossil. A footprint in volcanic ash (1790 eruption of Kilauea, Hawaii. #fossil #human #footprint #hawaii #geology #geoetc
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This beauty was in the floor of a building in Boston. So you can do paleontology even in a big city! #fossil #boston #geology #geoetc
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Lava flowed into this graveyard in Hawaii, forever entombing the occupants under layers of basalt. #geology #geoetc #hawaii #lava #graves
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An amazing experience watching the “firehouse” of lava pouring into the ocean on Hawaii a few years ago. #geoetc #geology #lava #hawIi #kilauea
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A chunk of country rock (dark) got caught up in this granite (light) forming this great xenolith in Maine. #granite #xenolith #geology #geoetc #maine
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The decay of marble statues in cities around the world is linked to air pollution causing rain to become acidic. This chemical weathering can be seen in this saint in Amsterdam. #geology #geoetc #weathering #pollution #acidrain
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The twists and turns of a recent pahoehoe lava flow on Mauna Loa Hawaii. It’s unworldly. #geology #geoetc #hawaii #volcano #lava #pahoehoe
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Morning on the Earths largest active volcano Mauna Loa, looking across the saddle to Hawaiis tallest volcano, Mauna Kea. #geology #volcano #geoetc #hawaii
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Magmatic gases escape from a shallow magma chamber depositing these sulfur crystals on Kilauea, Hawaii. #geology #geoetc #hawaii #volcano #crystals #sulfur
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Cut granite slabs awaiting placement in a new structure. The skill of splitting straight slabs is great, curved is amazing! #geology #geoetc #granite #dimensionstone
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Water spouts out of the Little Blowhole near Kiama on the NSW Australia south coast. A feature within a basalt (latite) flow, you see the cooling columns on the rock platform. #geology #geoetc #kiama #blowhole #basalt #columns
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The base of the Permian rocks of the huge Sydney Basin is here…with evidence of glacial times. Drop stones and fauna with thick shells to protect them from the falling rocks melting from icebergs. #geology #geoetc #australia #permian #sydneybasin #fossils #dropstones
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Stromboli erupts in small regular bursts…about every 20 mins. Material then rolls down the scree slope. During the day it’s fun. During the night it is amazing! #geology #geoetc #volcano #italy #eruption #stromboli
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My favorite dike,with wonderful chilled margins, plunges into the sea at Wasp Head, NSW Australia. #geology #geoetc #dike
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Walking into what was once a pool of lava which then cooled to form massive basaltic columns. Iceland has it all. #geology #geoetc #basalt #columns #iceland
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Mapping a lava flow in Hawaii, when two endangered Nene wander by… #geology #geoetc #birds #hawaii #lava
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Visiting Siccar Point, like James Hutton did (albeit by boat) to ponder the gap in time represented by the unconformity. #geology #history #geoetc #scotland #hutton
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On the summit of Vulcano…after which all volcanoes are named- join us here in 2026. geoetc.com/italy2026/. #volcano #geology #geoetc #italy.
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Volcanic ash makes up one side of this green sand beach bay in Hawaii. The wall is the remnant of an ancient cinder cone that formed when sea level was much lower. #geology #geoetc #hawaii #greensandbeach #sealevel #cindercone #volcano
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