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Keyword: geology

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  • Residents evacuated from Italian island Vulcano over carbon dioxide levels

    11/21/2021 8:26:15 PM PST · by blueplum · 22 replies
    CNN ^ | 21 November 2021 | Barbie Latza Nadeau, CNN
    (CNN)Most of the 250 permanent residents of a volcanic Italian island have been told to evacuate after levels of carbon dioxide in the air spiked dangerously, causing respiratory problems to people and their pets. Carbon dioxide levels around the volcanic island of Vulcano in the Aeolian archipelago off the north coast of Sicily have risen from 80 tons to 480 tons, effectively reducing the amount of oxygen in the air, according to the Italian National Institute for Geophysics and Volcanology (INGV).... ...In a message on the Lipari Comune's Facebook page, Giorgianni explained Sunday that the evacuation is not because of...
  • New mineral 'davemaoite' made an unlikely journey from the depths of the Earth

    11/17/2021 3:45:46 PM PST · by BenLurkin · 19 replies
    npr ^ | November 17, 20215:06 AM ET | EMMA BOWMAN ZIAD BUCHH
    Researchers say they've recovered a mineral from deep inside the Earth — one they thought would never see the light of day. Scientists at the University of Nevada, Las Vegas, named the mineral "davemaoite," after Ho-kwang "Dave" Mao, a retired experimental geophysicist whose influence on the field is still felt today. "It's an opportunity to give him credit for his big contributions," said Oliver Tschauner, a mineralogist who led a study of the rare mineral, in an interview with NPR's Morning Edition. No one ever expected to see the mineral on the Earth's surface. That's because deep-Earth minerals like davemaoite...
  • Deepest earthquake ever detected struck 467 miles beneath Japan

    10/25/2021 4:12:47 PM PDT · by BenLurkin · 29 replies
    National Geographic ^ | OCTOBER 25, 2021 | MAYA WEI-HAAS
    The first jolt, which struck off the coasts of Japan’s remote Bonin Islands, was recorded at magnitude 7.9 and up to 680 kilometers (423 miles) underground, making it one of the deepest quakes of its size. Then another oddity emerged in the cascade of aftershocks that followed: a tiny temblor that, if confirmed, would be the deepest earthquake ever detected. The ultradeep quake, described recently in the journal Geology, is estimated to have struck some 751 kilometers (467 miles) beneath the surface in the layer of our planet known as the lower mantle, where scientists have long thought earthquakes unlikely,...
  • Did the Earth tip on its side 84 million years ago?

    10/18/2021 8:17:35 AM PDT · by LibWhacker · 78 replies
    Phys.org ^ | 10/18/2021 | Tokyo Institute of Technology
    Scaglia Rossa Limestone exposed near Furlo, Italy, in the Northern Apennine Mountains. Limestone at this locality accumulated on the bottom of a shallow sea, in an arm of the ancient Mediterranean ocean nearly 85 million years ago, during what is called Late Cretaceous time. Credit: Ross Mitchell.Hold on to your hats, because scientists have found more evidence that Earth tips over from time to time. We know that the continents are moving slowly due to plate tectonics, but continental drift only pushes the tectonic plates past each other. It has been debated for the past few decades whether the...
  • LIVE 6 | VULCÃO EM ERUPÇÃO LA PALMA ESPANHA | Eruption of the volcano in La Palma

    10/12/2021 5:10:36 PM PDT · by blueplum · 11 replies
    Noticia News/TV CANARIAS ^ | 12 October 2021 | TV CANARIAS
    La Palmas volcano, Canary Islands, Atlantic
  • Hawaii's Kilauea volcano erupts, lava fountains form in park

    09/30/2021 1:28:22 AM PDT · by blueplum · 35 replies
    ABC ^ | 29 September 2021 | CALEB JONES Associated Press
    HONOLULU -- One of the most active volcanos on Earth is erupting on Hawaii's Big Island. Officials with the U.S. Geological Survey confirmed Wednesday that an eruption has begun in Kilauea volcano's Halemaumau crater at the volcano's summit. Webcam footage of the crater showed lava fountains covering the floor of the crater and billowing clouds of volcanic gas were rising into the air. The same area has been home to a large lava lake at various times throughout the volcano's eruptive past....
  • Residents flee homes in middle of the night as properties begin to crack and sink [Scotland]

    09/25/2021 10:57:34 PM PDT · by blueplum · 7 replies
    The Mirror ^ | 25 September 2021 | uncredited
    Families fled their collapsing homes in terror after they began to crumble in the middle of the night. Shocked neighbours found themselves scrambling for their lives in the dead of night after huge cracks began appearing in their walls. As they grabbed for treasured possessions the floor opened up beneath them, showing the earth below... ..A police officer at the scene told locals that foam concrete had been sprayed into the foundations and fixed the structure. He said: "Those houses won't move again. These guys are experts, they work all over the world."....
  • NASA's InSight lander measures one of the biggest and longest marsquakes yet – with tremors on the Red Planet lasting nearly 1.5 HOURS

    09/25/2021 4:44:46 PM PDT · by blueplum · 12 replies
    The Daily Mail UK ^ | 23 September 2021 | RYAN MORRISON FOR MAILONLINE
    NASA's InSight lander has measured one of the biggest and longest marsquakes yet, which featured tremors of 4.2 magnitude lasting nearly an hour and a half, the space agency said. The robotic seismometre celebrated 1,000 days on the Red Planet on September 18, when it detected the largest tremor since it arrived at the Elysium Planitia in 2018. The 4.2 magnitude quake equals the largest detected so far on Mars... ...NASA launched InSight with the goal of studying seismic waves to learn more about the interior of the Red Planet, and understand how it formed and its inner core.
  • Astronomy Picture of the Day - Mars Panorama 360 from Curiosity

    09/14/2021 2:41:33 PM PDT · by MtnClimber · 25 replies
    APOD.NASA.gov ^ | Image Credit: NASA, JPL-Caltech, MSSS; Processing & License: Elisabetta Bonora & Marco Faccin (alive
    Explanation: Which way up Mount Sharp? In early September, the robotic rover Curiosity continued its ascent up the central peak of Gale Crater, searching for more clues about ancient water and further evidence that Mars could once have been capable of supporting life. On this recent Martian morning, before exploratory drilling, the rolling rover took this 360-degree panorama, in part to help Curiosity's human team back on Earth access the landscape and chart possible future routes. In the horizontally-compressed featured image, an amazing vista across Mars was captured, complete with layered hills, red rocky ground, gray drifting sand, and a...
  • NASA can't find the Mars rock sample that the Perseverance rover drilled - it mysteriously disappeared

    08/10/2021 12:04:53 AM PDT · by blueplum · 20 replies
    The Business Insider via msn ^ | 09 Aug 2021 | Morgan McFall-Johnsen
    NASA has spent nine years and about $2 billion in its quest to drill and store samples of Martian rocks. The Perseverance rover was poised to finally make that happen for the first time on Friday. The rover picked a rock in an ancient Mars lake bed that could have once held alien life, and attempted to drill. But then something strange happened: The sample seems to have vanished without a trace.... ...To figure out what happened, NASA is instructing Perseverance to take close-up pictures of the bore hole it made. Mission controllers will then try to make plans for...
  • Nuclear Bombs Can Cause Geomagnetic Storms

    07/30/2021 6:38:22 AM PDT · by Pete from Shawnee Mission · 76 replies
    spaceweather.com ^ | 07/29/2021 | Dr.Tony Phillips
    "They called it “Starfish Prime.” On July 9, 1962, the US military exploded a thermonuclear warhead 250 miles above the Pacific Ocean. What happened next surprised everyone. Witnesses from Hawaii to New Zealand reported auroras dancing overhead, magnificent midnight “rainbow stripes” that tropical sky watchers had never seen before. Radios fell silent, then suddenly became noisy. Burglar alarms sounded as local streetlights in Honolulu went black." ...Snip..."Geomagnetic storms are famous for causing power blackouts. snip... EMPs can do it, too. Lurching magnetic fields cause electrical currents to flow through the ground. Literally, rocks beneath your feet begin to tingle with...
  • Earth tipped over on its side 84 million years ago and then righted itself, new study finds

    06/19/2021 5:28:30 PM PDT · by blueplum · 67 replies
    Business Insider ^ | 19 Jun 2021 | Aylin Woodward
    If you'd been able to stare at Earth from space during the late Cretaceous, when Tyrannosaurus rex and Triceratops roamed, it would've looked like the whole planet had tipped over on its side. According to a new study, Earth tilted by 12 degrees about 84 million years ago.... The researchers found that, between 86 and 79 million years ago, the crust and mantle had rotated around Earth's outer core and back again — causing the entire planet to tilt and then right itself like a roly-poly toy.... ...Prior to the late Cretaceous, the Pacific Plate — the largest tectonic plate...
  • Geologists 'resurrect' missing tectonic plate

    10/20/2020 9:33:20 PM PDT · by BenLurkin · 6,158 replies
    Phys.org ^ | 10/20/2020 | Sara Tubbs, University of Houston
    A team of geologists at the University of Houston College of Natural Sciences and Mathematics believes they have found the lost plate in northern Canada by using existing mantle tomography images—similar to a CT scan of the earth's interior. The findings, published in Geological Society of America Bulletin, could help geologists better predict volcanic hazards as well as mineral and hydrocarbon deposits. "Volcanoes form at plate boundaries, and the more plates you have, the more volcanoes you have," said Jonny Wu, assistant professor of geology in the Department of Earth and Atmospheric Sciences. "Volcanoes also affect climate change. So, when...
  • Mystery as giant stone road resurfaces from beneath the Pacific Ocean

    05/26/2021 6:27:18 PM PDT · by Roman_War_Criminal · 63 replies
    SS ^ | 5/24/21 | SS
    A few days ago, after an unusually strong tide, a huge stone road surfaced from beneath the waters of the Pacific Ocean. The stone road appears to have been made of giant cobblestones. Is it man made? If yes, who would have been capable of moving such huge blocks of rock… And for what purpose? such Or just Mother Nature? These questions must be answered by specialists in geology. The strange event lasted enough time for surprised residents of Sakhalin Island, in the far east of Russia, to immortalize the unexpected structure. As you might known, Sakhalin Island is the...
  • Is Earth's core lopsided? Strange goings-on in our planet's interior

    06/05/2021 7:39:36 AM PDT · by BenLurkin · 37 replies
    Phys.org ^ | June 3. 2021
    The faster growth under Indonesia's Banda Sea hasn't left the core lopsided. Gravity evenly distributes the new growth—iron crystals that form as the molten iron cools—to maintain a spherical inner core that grows in radius by an average of 1 millimeter per year. But the enhanced growth on one side suggests that something in Earth's outer core or mantle under Indonesia is removing heat from the inner core at a faster rate than on the opposite side, under Brazil. Quicker cooling on one side would accelerate iron crystallization and inner core growth on that side. This has implications for Earth's...
  • The search for Missouri’s legendary lost silver mine

    05/17/2021 7:13:29 PM PDT · by nickcarraway · 35 replies
    theSalemNewsonline ^ | 5/16/21 | Andrew Sheeley
    For centuries, a legend has persisted across the Ozarks. Lore holds marauding Spaniards once discovered a rich silver deposit within a cave somewhere in the hills, and then sealed it shut for future mining. Several variations of the tale are told, but one notion is constant, the treasure is said to still remain hidden. Many people in South-Central Missouri have searched for this fabled lost silver mine. Some went empty-handed to their graves after a lifetime of digging. Others got so far as thinking they found the site, and even had their ore tested at Missouri S&T. However, no great...
  • Mysterious melting of Earth’s crust in Western North America, from BC, Canada to Sonora, Mexico

    04/29/2021 9:31:37 AM PDT · by Roman_War_Criminal · 28 replies
    SS ^ | 4.28/21 | SS
    A group of University of Wyoming professors and students has identified an unusual belt of igneous rocks that stretches for over 2,000 miles from British Columbia, Canada, through Idaho, Montana, Nevada, southeast California and Arizona to Sonora, Mexico. “Geoscientists usually associate long belts of igneous rocks with chains of volcanoes at subduction zones, like Mount Shasta, Mount Hood, Mount St. Helens and Mount Rainer,” says Jay Chapman, an assistant professor in UW’s Department of Geology and Geophysics. “What makes this finding so interesting and mysterious is that this belt of igneous rocks is located much farther inland, away from the...
  • New research uncovers continental crust emerged 500 million years earlier than thought

    04/26/2021 11:55:18 PM PDT · by LibWhacker · 25 replies
    Phys.org ^ | 4/26/2021 | Sarah Derouin
    The first emergence and persistence of continental crust on Earth during the Archaean (4 billion to 2.5 billion years ago) has important implications for plate tectonics, ocean chemistry and biological evolution. This happened about a half-billion years earlier than previously thought, according to new research being presented at the EGU General Assembly 2021.Once land becomes established through dynamic processes like plate tectonics, it begins to weather and add crucial minerals and nutrients to the ocean. A record of these nutrients is preserved in the ancient rock record. Previous research used strontium isotopes in marine carbonates, but these rocks are usually...
  • Man Cracks Open an Agate, Discovers The Cookie Monster Inside

    01/28/2021 10:34:23 AM PST · by Red Badger · 43 replies
    https://www.sciencealert.com ^ | STEPHANIE PAPPAS | 27 JANUARY 202
    You never know what you're going to get when you crack open a geode-like rock called an agate, but a new specimen is even more surprising than usual: It looks just like Cookie Monster. The agate, found in Soledade, a precious stone hotspot in southern Brazil, is a dead ringer for the blue, googly-eyed Sesame Street Muppet. After its owner, California mineral collector Mike Bowers, posted about the agate on Facebook, it went viral, with write-ups in newspapers from Australia to Israel to the United States. "I didn't realize that Cookie Monster was so well known and part of the...
  • Earth Keeps Pulsating Every 26 Seconds. No One Knows Why.

    11/04/2020 10:57:01 PM PST · by Viking2002 · 88 replies
    Popular Mechanics ^ | 10/30/2020 | CAROLINE DELBERT
    Why is Earth pulsating every 26 seconds, and why canÂ’t scientists explain it after 60 years? This is an enigma wrapped in a periodically predictable mystery motion. It could be a harmonic phenomenon, a regular seismic chirp caused by the sunÂ’s energy, or a beacon drawing scientists to its source to begin a treasure hunt. âž¡ The world is weird. We'll show you how it works. In the early 1960s, a geologist named Jack Oliver first documented the pulse, also known as a "microseism," according to Discover. Oliver, who worked at Columbia University's Lamont-Doherty Geological Observatory at the time, heard...