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Supervolcano

All articles tagged with #supervolcano

Shallow mantle flow drives Yellowstone magma, challenging deep-plume idea
science16 days ago

Shallow mantle flow drives Yellowstone magma, challenging deep-plume idea

A new three-dimensional geodynamic model of western North America shows Yellowstone is fed by shallow asthenospheric mantle transported eastward by a long-lived 'mantle wind' rather than a deep mantle plume. This flow creates decompression melting and distributes magma as a thick mush across the lithosphere, forming a southwest-dipping channel that acts as a conduit for magma over long timescales. The findings align with geophysical observations and offer a unified explanation for how large magmatic systems beneath supervolcanoes can persist without persistent liquid magma chambers.

via ScienceDaily|
#geodynamics#magma-mush#mantle-wind
New Magma Injections Refill Japan’s Kikai Caldera After 7,300 Years
science3 months ago

New Magma Injections Refill Japan’s Kikai Caldera After 7,300 Years

A Kobe University-led study using underwater seismic surveys mapped a large magma reservoir beneath Japan’s Kikai Caldera and found that fresh magma is being injected to refill the system after its 7,300-year-old eruption, supporting a general refill model for giant calderas like Yellowstone and Toba and potentially improving monitoring of future giant eruptions.

via SciTechDaily|
#kikai-caldera#magma-re-injection#magma-reservoir
Sea-floor Giant Redefines Earth's Largest Volcano
science4 months ago

Sea-floor Giant Redefines Earth's Largest Volcano

Volcanoes come in various forms, including supervolcanoes that produce enormous eruptions (VEI 8), create surface depressions, and erupt infrequently. Yellowstone is a famous example. The largest volcano on Earth is actually underwater: Tamu Massif in the Pacific, about 310,000 square kilometers in area with roots extending ~30 kilometers into the crust, formed around 145 million years ago and now extinct. Mauna Loa was previously considered the largest on land, while Olympus Mons is often cited for scale in comparisons.

via BBC Wildlife Magazine|
#mauna-loa#science#supervolcano
Massive $1.5 Trillion Lithium Deposit Discovered Beneath U.S. Supervolcano
science-and-environment6 months ago

Massive $1.5 Trillion Lithium Deposit Discovered Beneath U.S. Supervolcano

Scientists have discovered a potentially massive $1.5 trillion lithium deposit beneath the dormant McDermitt caldera, which could significantly impact the global supply of critical energy materials. The deposit, formed over 16 million years ago, is of strategic interest for the U.S. amid rising demand for lithium-ion batteries, but environmental, cultural, and technical challenges remain before extraction can proceed.

via Indian Defence Review|
#energy-materials#environmental-concerns#lithium-deposit
Massive $1.5 Trillion Lithium Deposit Discovered Beneath U.S. Supervolcano
science-and-environment7 months ago

Massive $1.5 Trillion Lithium Deposit Discovered Beneath U.S. Supervolcano

Scientists have confirmed the world's largest lithium deposit beneath Nevada's McDermitt Caldera, potentially holding over 20 million metric tons of lithium, which could significantly impact the US's clean energy and electric vehicle industries. The deposit's unique volcanic origin presents both opportunities and challenges, with ongoing debates over environmental and cultural impacts.

via The Daily Galaxy|
#critical-minerals#lithium-deposit#science-and-environment
Massive $1.5 Trillion Lithium Deposit Discovered Beneath U.S. Supervolcano
science-and-technology7 months ago

Massive $1.5 Trillion Lithium Deposit Discovered Beneath U.S. Supervolcano

A massive lithium-rich clay deposit beneath the McDermitt caldera on the Nevada-Oregon border, valued at around $1.5 trillion, could significantly impact the global battery industry due to its size, high lithium concentration, and shallow depth, though environmental and cultural concerns pose challenges for extraction.

via Earth.com|
#battery-market#critical-minerals#lithium-deposit
New Imaging Uncovers Hidden Magma and Rising Risks at Yellowstone
science9 months ago

New Imaging Uncovers Hidden Magma and Rising Risks at Yellowstone

Recent advanced imaging studies have uncovered hidden magma reservoirs beneath Yellowstone, particularly in the northeastern caldera, raising concerns about potential increased eruption risks. While no immediate threat exists, a super-eruption could have significant local and global impacts, including ash fallout, climate cooling, and ecological disruptions. Ongoing monitoring and research are crucial for understanding and mitigating future risks.

via Energy Reporters|
#geothermal-imaging#magma-reservoirs#science
Scientists Warn of Imminent Catastrophic Volcanic Eruption Threatening Humanity
science9 months ago

Scientists Warn of Imminent Catastrophic Volcanic Eruption Threatening Humanity

Recent studies using advanced electromagnetic imaging have revealed multiple magma reservoirs beneath Yellowstone, shifting the focus of eruption risk to the northeast and highlighting the potential for a catastrophic super-eruption that could cause global climate cooling and widespread disruption, although such an event remains unlikely in the near future.

via Indian Defence Review|
#climate-impact#eruption-risk#magmat-reservoirs
Scientists Warn of Impending Catastrophic Volcanic Eruption Threatening Humanity
science11 months ago

Scientists Warn of Impending Catastrophic Volcanic Eruption Threatening Humanity

A recent USGS study reveals that Yellowstone's magma system is more complex than previously thought, with a 16% chance of a super-eruption before 2100, which could cause widespread ash fall, global cooling, and ecological disruption, emphasizing the need for improved monitoring and preparedness despite the low probability.

via The Daily Galaxy|
#climate-impact#eruption#geophysical-study