History of Geology
@historyofgeology.bsky.social
A channel dedicated to the #History of #Earth #Sciences 🌍 run by an Alpine #Rock G(e)o(logist)at ⛰️🔨🐐
Scientists have discovered that a weak spot in #Earth’s magnetic field has expanded since 2014 🌏🧭
www.forbes.com/sites/davidb...
www.forbes.com/sites/davidb...
Earth’s Magnetic Field Is Weakening Over The Atlantic Ocean
Scientists have discovered that a weak spot in Earth’s magnetic field has expanded since 2014.
www.forbes.com
November 28, 2025 at 1:11 PM
Scientists have discovered that a weak spot in #Earth’s magnetic field has expanded since 2014 🌏🧭
www.forbes.com/sites/davidb...
www.forbes.com/sites/davidb...
November 28, 1854, birthday of Dunkinfield Henry Scott, pioneer of paleobotany & fossil plants taxonomy 🌱 #FossilFriday
academic.oup.com/aob/article-...
academic.oup.com/aob/article-...
November 28, 2025 at 12:05 PM
November 28, 1854, birthday of Dunkinfield Henry Scott, pioneer of paleobotany & fossil plants taxonomy 🌱 #FossilFriday
academic.oup.com/aob/article-...
academic.oup.com/aob/article-...
November 27, 1754, birthday of German naturalist Georg Forster.
In 1775, he departed together with his father on board HMS Resolution on a three-year expedition into the Pacific Ocean.
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In 1775, he departed together with his father on board HMS Resolution on a three-year expedition into the Pacific Ocean.
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November 27, 2025 at 4:55 PM
November 27, 1754, birthday of German naturalist Georg Forster.
In 1775, he departed together with his father on board HMS Resolution on a three-year expedition into the Pacific Ocean.
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In 1775, he departed together with his father on board HMS Resolution on a three-year expedition into the Pacific Ocean.
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Rock samples brought back to Earth by the last Apollo mission in 1972 reveal an exotic sulfur signal, hinting at yet-unknown geological events in the Moon's early history 🌙🔨👨🚀
www.forbes.com/sites/davidb...
www.forbes.com/sites/davidb...
Exotic Sulfur Signal Found In Moon Rocks Collected Over 50 Years Ago
Rock samples brought back to Earth by the last Apollo mission reveal an exotic sulfur signal, hinting at yet-unknown geological events in the Moon's early history.
www.forbes.com
November 27, 2025 at 2:25 PM
Rock samples brought back to Earth by the last Apollo mission in 1972 reveal an exotic sulfur signal, hinting at yet-unknown geological events in the Moon's early history 🌙🔨👨🚀
www.forbes.com/sites/davidb...
www.forbes.com/sites/davidb...
November 27, 1701, birthday of Swedish physicist Anders Celsius of Celsius temperature degree scale fame.
He also studied land-uplift with the help of a rock:
www.sealevelrise.com/2014/01/03/t...
He also studied land-uplift with the help of a rock:
www.sealevelrise.com/2014/01/03/t...
November 27, 2025 at 11:11 AM
November 27, 1701, birthday of Swedish physicist Anders Celsius of Celsius temperature degree scale fame.
He also studied land-uplift with the help of a rock:
www.sealevelrise.com/2014/01/03/t...
He also studied land-uplift with the help of a rock:
www.sealevelrise.com/2014/01/03/t...
Series of images by Eduard Pechuël-Loesche from an 1888 book on the strange skies produced the world-over after the 1883 eruption of Krakatoa sent voclcanic ash into Earth's atmosphere 🌋🌈
publicdomainreview.org/collection/s...
publicdomainreview.org/collection/s...
Studies on Twilight Phenomena, after Krakatoa (1888)
Wonderful series of images by Eduard Pechuël-Loesche documenting the strange skies following the Krakatoa eruption.
publicdomainreview.org
November 27, 2025 at 11:10 AM
Series of images by Eduard Pechuël-Loesche from an 1888 book on the strange skies produced the world-over after the 1883 eruption of Krakatoa sent voclcanic ash into Earth's atmosphere 🌋🌈
publicdomainreview.org/collection/s...
publicdomainreview.org/collection/s...
"Map of the World showing the distribution of Volcanoes and Earthquakes" by George W. Fitch for "Outlines of Physical Geography" (1868) 🌋
November 26, 2025 at 7:54 PM
"Map of the World showing the distribution of Volcanoes and Earthquakes" by George W. Fitch for "Outlines of Physical Geography" (1868) 🌋
November 26, 2025 at 7:53 PM
On November 25, 1930, the Izu Peninsula (Japan) was struck by more than 690 earthquakes in less than 24 hours. The largest shock, a magnitude 7.3 event, killed 272 people and caused widespread destruction.
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November 25, 2025 at 10:40 AM
On November 25, 1930, the Izu Peninsula (Japan) was struck by more than 690 earthquakes in less than 24 hours. The largest shock, a magnitude 7.3 event, killed 272 people and caused widespread destruction.
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Small Bubbles Cause Big Blasts... but not always 🫧
Study Explains Why Some Volcanoes Explode and Others Don’t 🌋
www.forbes.com/sites/davidb...
Study Explains Why Some Volcanoes Explode and Others Don’t 🌋
www.forbes.com/sites/davidb...
Study Explains Why Some Volcanoes Explode and Others Don’t
Researchers have simulated how magma moves, providing a new explanation for how it erupts to the surface.
www.forbes.com
November 24, 2025 at 8:42 PM
Small Bubbles Cause Big Blasts... but not always 🫧
Study Explains Why Some Volcanoes Explode and Others Don’t 🌋
www.forbes.com/sites/davidb...
Study Explains Why Some Volcanoes Explode and Others Don’t 🌋
www.forbes.com/sites/davidb...
November 24, 1859, first publication of Charles #Darwin’s Origin of Species 📚 & it all started with a geological field trip 🪨🔨
www.forbes.com/sites/davidb...
www.forbes.com/sites/davidb...
November 24, 2025 at 5:06 PM
November 24, 1859, first publication of Charles #Darwin’s Origin of Species 📚 & it all started with a geological field trip 🪨🔨
www.forbes.com/sites/davidb...
www.forbes.com/sites/davidb...
November 24, 1974, the first fossils of an Australopithecus afarensis specimen - nicknamed Lucy after the Beatles song that was frequently played at the excavation camp - were discovered 💀
www.science.org/content/arti...
www.science.org/content/arti...
November 24, 2025 at 4:46 PM
November 24, 1974, the first fossils of an Australopithecus afarensis specimen - nicknamed Lucy after the Beatles song that was frequently played at the excavation camp - were discovered 💀
www.science.org/content/arti...
www.science.org/content/arti...
November 23, 1980, a major earthquake with magnitude ~ 6.9. struck southern Italy.
It caused around 2,400 deaths, thousands injured, and massive destruction with tens of thousands of buildings damaged or destroyed.
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It caused around 2,400 deaths, thousands injured, and massive destruction with tens of thousands of buildings damaged or destroyed.
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November 23, 2025 at 11:52 AM
November 23, 1980, a major earthquake with magnitude ~ 6.9. struck southern Italy.
It caused around 2,400 deaths, thousands injured, and massive destruction with tens of thousands of buildings damaged or destroyed.
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It caused around 2,400 deaths, thousands injured, and massive destruction with tens of thousands of buildings damaged or destroyed.
...
November 22, 1842, contemporary sources describe clouds of ash "rolling up in great masses, wreathing as smoke from a pipe does, but on an enormous scale" over Washington and Oregon - one of the early documented eruptive episodes of St. Helens (who repeated this spectacle 138 years later)🌋
November 22, 2025 at 12:58 PM
November 22, 1842, contemporary sources describe clouds of ash "rolling up in great masses, wreathing as smoke from a pipe does, but on an enormous scale" over Washington and Oregon - one of the early documented eruptive episodes of St. Helens (who repeated this spectacle 138 years later)🌋
November 22, 1988, died #OTD Australian anatomist & anthropologist Raymond Dart, best known for his involvement in the 1924 discovery of the 1st fossils of Australopithecus africanus, an extinct hominin closely related to humans.
November 22, 2025 at 11:14 AM
November 22, 1988, died #OTD Australian anatomist & anthropologist Raymond Dart, best known for his involvement in the 1924 discovery of the 1st fossils of Australopithecus africanus, an extinct hominin closely related to humans.
November 21, 1898, birthday of Belgian surrealist René Magritte.
"The Castle of the Pyrenees" - the painting is one of several Magritte works depicting floating stones, which were a frequent theme in his 1950s work, symbolizing impossible dreams 🪨
"The Castle of the Pyrenees" - the painting is one of several Magritte works depicting floating stones, which were a frequent theme in his 1950s work, symbolizing impossible dreams 🪨
November 21, 2025 at 4:45 PM
November 21, 1898, birthday of Belgian surrealist René Magritte.
"The Castle of the Pyrenees" - the painting is one of several Magritte works depicting floating stones, which were a frequent theme in his 1950s work, symbolizing impossible dreams 🪨
"The Castle of the Pyrenees" - the painting is one of several Magritte works depicting floating stones, which were a frequent theme in his 1950s work, symbolizing impossible dreams 🪨
Keep calm and continue to collect rocks 🪨🔨
Washington’s Most Dangerous Volcano Is Not ‘About To Erupt’ 🌋
www.forbes.com/sites/davidb...
Washington’s Most Dangerous Volcano Is Not ‘About To Erupt’ 🌋
www.forbes.com/sites/davidb...
Washington’s Most Dangerous Volcano Is Not ‘About To Erupt’
The USGS Volcanoes, a social media profile sharing news on volcanoes and their activity, posted a disclaimer about reports of unusual or increased volcanic activity occurring at Mount Rainer.
www.forbes.com
November 21, 2025 at 2:39 PM
Keep calm and continue to collect rocks 🪨🔨
Washington’s Most Dangerous Volcano Is Not ‘About To Erupt’ 🌋
www.forbes.com/sites/davidb...
Washington’s Most Dangerous Volcano Is Not ‘About To Erupt’ 🌋
www.forbes.com/sites/davidb...
On November 21, 1925, Lava Beds National Monument was established in northeastern California, preserving a fascinating volcanic landscape shaped by eruptions from the Medicine Lake Volcano.
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November 21, 2025 at 10:48 AM
On November 21, 1925, Lava Beds National Monument was established in northeastern California, preserving a fascinating volcanic landscape shaped by eruptions from the Medicine Lake Volcano.
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Researchers confirmed the impact origin of the Jinlin crater: a 900-meter-wide remarkably young impact crater preserved on a hillside in southeastern #China 🇨🇳☄️
www.forbes.com/sites/davidb...
www.forbes.com/sites/davidb...
Study Confirms Earth’s Largest Impact Crater Formed In The Past 12,000 Years
Researchers confirmed the impact origin of the Jinlin crater: a 900-meter-wide remarkably young impact crater preserved on a hillside in southeastern China.
www.forbes.com
November 20, 2025 at 2:22 PM
Researchers confirmed the impact origin of the Jinlin crater: a 900-meter-wide remarkably young impact crater preserved on a hillside in southeastern #China 🇨🇳☄️
www.forbes.com/sites/davidb...
www.forbes.com/sites/davidb...
Around November 20, 1980, a lava dome starts to grow inside what remains of Mount St. Helens after its catastrophic eruption six months earlier.
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November 20, 2025 at 2:18 PM
Around November 20, 1980, a lava dome starts to grow inside what remains of Mount St. Helens after its catastrophic eruption six months earlier.
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November 20, 1797, birthday of British paleontologist, marine biologist and scientific artist Mary Morland Buckland.
Mostly self-educated, Mary Morland started her career as a teenager producing illustrations and providing fossil specimens and models for other naturalists.
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Mostly self-educated, Mary Morland started her career as a teenager producing illustrations and providing fossil specimens and models for other naturalists.
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November 20, 2025 at 2:15 PM
November 20, 1797, birthday of British paleontologist, marine biologist and scientific artist Mary Morland Buckland.
Mostly self-educated, Mary Morland started her career as a teenager producing illustrations and providing fossil specimens and models for other naturalists.
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Mostly self-educated, Mary Morland started her career as a teenager producing illustrations and providing fossil specimens and models for other naturalists.
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#Semeru #volcano — the highest volcano on #Java, #Indonesia — erupted on the afternoon of #November 19, 2025, with pyroclastic flows racing at high speed down its slopes 🌋
www.forbes.com/sites/davidb...
www.forbes.com/sites/davidb...
Semeru Volcano Erupts In Indonesia, Spewing Powerful Pyroclastic Flows
Semeru volcano — the highest volcano on Java — erupted on the afternoon of November 19, 2025, with pyroclastic flows racing at high speed down its slopes.
www.forbes.com
November 19, 2025 at 8:30 PM
#Semeru #volcano — the highest volcano on #Java, #Indonesia — erupted on the afternoon of #November 19, 2025, with pyroclastic flows racing at high speed down its slopes 🌋
www.forbes.com/sites/davidb...
www.forbes.com/sites/davidb...
November 19, 1863, the Gettysburg Address is a speech delivered by #US president Abraham Lincoln #OTD
The Planet Geocast explores how geology shaped the field and may even played even a role in the outcome of the Battle of Gettysburg ⚔️⚒️
www.youtube.com/watch?v=lFrW...
The Planet Geocast explores how geology shaped the field and may even played even a role in the outcome of the Battle of Gettysburg ⚔️⚒️
www.youtube.com/watch?v=lFrW...
The Geology of the Battle of Gettysburg - A PlanetGeo Field Trip
YouTube video by PlanetGeo: a science podcast
www.youtube.com
November 19, 2025 at 8:28 PM
November 19, 1863, the Gettysburg Address is a speech delivered by #US president Abraham Lincoln #OTD
The Planet Geocast explores how geology shaped the field and may even played even a role in the outcome of the Battle of Gettysburg ⚔️⚒️
www.youtube.com/watch?v=lFrW...
The Planet Geocast explores how geology shaped the field and may even played even a role in the outcome of the Battle of Gettysburg ⚔️⚒️
www.youtube.com/watch?v=lFrW...
November 19, 1822, an estimated magnitude 8 earthquake hits Chile. This event was described by traveler, botanist & author María Callcot Graham. She speculated that earthquakes are caused by "upheavals" of Earth's crust and are also responsible for mountain building ⛰︎
November 19, 2025 at 8:26 PM
November 19, 1822, an estimated magnitude 8 earthquake hits Chile. This event was described by traveler, botanist & author María Callcot Graham. She speculated that earthquakes are caused by "upheavals" of Earth's crust and are also responsible for mountain building ⛰︎
On November 13, 1985, a series of lahars triggered by medium-sized eruption of Nevado del Ruiz volcano kills an estimated 25.000 people in the town of Armero, Colombia.
www.earthmagazine.org/article/benc...
www.earthmagazine.org/article/benc...
November 13, 2025 at 7:20 PM
On November 13, 1985, a series of lahars triggered by medium-sized eruption of Nevado del Ruiz volcano kills an estimated 25.000 people in the town of Armero, Colombia.
www.earthmagazine.org/article/benc...
www.earthmagazine.org/article/benc...