Mont Gerbier-de-Jonc · Monts d’Ardèche · France

This summit is an extinct #volcanic cone standing out a plateau. Here’s also where the #Loire arises, France’s longest river. It is a pleasure to climb the last 200 meters to the summit, as every footstep sounds a bit. The name of the rock, #phonolite, has its origin in the bright sound it gives when hit. The photo was taken about 5 yrs back.

#Phonolith #LandscapePhotography #Photography #Fotografie #Fels #Rock #Geology #Geologie

hiking • railtrails • reviews • maps

Cinder Cone, Lassen National Park CA
4⭐ 3-5 mi hike • 730-1220 ft gain • Medium
Trail review: https://www.trailspotting.com/2021/07/cinder-cone-lassen-volcanic-national.html

#Hiking #Hike #Lassen #NationalPark #California #NorthernCalifornia #Volcano #Cindercone #Volcanic #Outdoors #Mapping #Trails #NorCal

Nature does what she can, but only humans can solve the #ClimateCrisis - "Volcanoes and wildfires offset 20% of global heating over eight years - Events that inject smoke and gas into high atmosphere help to cool planet but are no solution to climate crisis, says study

Explosive #volcanic eruptions and #wildfires have offset global heating by around a fifth over the last eight years, a study shows. In particular the eruption of Calbuco in southern Chile in 2015 and the 2019-20 Australian wildfires injected vast amounts of smoke and gas into the high atmosphere, which helped to cool the planet by absorbing heat leaving the Earth and reflecting sunlight back to space.

Pengfei Yu from Jinan University in China and his colleagues used data gathered by high altitude balloons over the Tibetan plateau and the US to model the cooling impact of stratospheric volcanic eruptions – those that inject ash into the high atmosphere – and wildfires.

Their results, which are published in Geophysical Research Letters, show that these events have produced a greater than average amount of cooling in recent years. This is partly because there were more low-latitude events where smoke and gas is transported quickly around the globe by high-level winds and remains suspended for longer than events closer to the poles.

The study also showed, however, that the rapid increase in greenhouse-gas warming means that the cooling effect from wildfires and volcanic eruptions is diminishing and cannot be relied on to offset global heating in the coming decades."

https://www.theguardian.com/environment/2023/aug/23/volcanoes-and-wildfires-offset-20-of-global-heating-over-eight-years

Link to original paper here - https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL103791

#ClimateCrisis #ClimateEmergency #Climate #Klima #Klimakrise #ClimateDiary #Volcanism #Geophysics

Strange combination of #volcanic #rocks along the #Allier river (France). #olivine bearing #basalt (~1.8Ma) and large #plagioclase #crystals in #granites from the much older basement. Could never be formed contemporary.

With all these unusual #heatwaves, has anyone revisited stats for recent #volcanic #eruptions? The most explosive ones from the last 5 years? It’s a genuine question, because as #volcanoes expel material into the atmosphere, those particles may filter the sun and influence weather, etc. #noaa #usgs

Powerful #volcanic eruptions that blast #diamonds high into the sky and scatter the precious stones across the Earth’s surface have long mystified researchers. But now, scientists have worked out what unfolds more than 100 miles underground to propel the crystals upwards with such spectacular force.

https://www.theguardian.com/science/2023/jul/26/why-do-diamonds-erupt-earth-depths-scientists-have-answer

How #ClimateChange impacts #volcanic activity

By Jane Marsh on March 1, 2022

"Researchers at Leeds wanted to understand how the pressure exerted by Earth’s #glaciers onto the crust impacts movements below the surface. This process, known as 'surface loading,' can change the flow of magma and thus lead to more volcanic activity.

"The study, which took place in 2017, looked back at the activity of #Iceland’s many #volcanoes 4500 to 5500 years ago, when Earth was still recovering from the latest Ice Age.

"Based on the amount of ash deposited in the surrounding area, they concluded that the island’s volcanoes became more active and extreme as more ice melted.

"While they’re unsure of the details, the mechanics that explain this phenomenon are straightforward. Glaciers put immense pressure on the Earth’s surface, restricting the flow of magma. When the glaciers melt, magma can move more freely, bubbling to the surface and erupting more easily.

"The Cambridge study, released in 2021, suggests that climate change will transform the cooling effects of volcanic eruptions. As the atmosphere warms, the smoke and fumes from eruptions will be able to rise higher. The fumes might also travel farther, affecting regions half a world away."

Read more:
https://www.sustainability-times.com/environmental-protection/how-climate-change-impacts-volcanic-activity/

#ClimateCatastrophe #Volcano #Geology #GlacialMelting

Just 11 months after the last #eruption ended on #Iceland’s #Reykjanes Peninsula, two new 100-meter-long #volcanic fissures spewing lava opened in the ground 🌋🇮🇸

https://www.forbes.com/sites/davidbressan/2023/07/12/new-eruption-started-on-icelands-reykjanes-peninsula/

How Will #ClimateChange Impact #Volcanic Eruptions?

by David Bressan, July 3, 2023

"A study published in 2022 showed a link between volcanic activity and the retreat of the Cordilleran #IceSheet, which once covered large portions of western North America, during times of rapid climate warming. A study of #Iceland's volcanic systems showed a similar pattern. #Volcanoes experienced a period of heightened activity when the ice cap covering the island disappeared. The average eruption rates were found to be up to 100 times higher after the ice melted. Scientists now think that ice cover to volcanoes is like a cork in a champagne bottle. Remove the icy cork and boom, the eruptions begin.

"Also, sea levels can influence the likelihood of volcanic eruptions. Studying the past eruptions of the island of #Santorini in the Aegean Sea, the authors of a study published in 2021 showed that volcanic activity was directly linked to variations of the water levels. Rising sea levels could displace an estimated 267 million people worldwide, forcing them to settle in areas at higher risk of volcanic hazards."

https://www.forbes.com/sites/davidbressan/2023/07/03/how-will-climate-change-impact-volcanic-eruptions/?sh=64892d563a8b

#ClimateCatastrophe #Volcanoes #SeaLevel #SeaLevelRise

More pics of the #Fagradalsfjall #Keilir / #Iceland #Volcanic #eruption

> https://www.mbl.is/frettir/innlent/2023/07/10/myndskeid_thyrluflug_yfir_gosstodvarnar/?utm_medium=Social&utm_campaign=mbl.is-twitter&utm_source=Twitter#Echobox=1689012783-1

#Iceland >A baby #volcan is born ... footage of the #Fagradalsfjall #Keilir #Volcanic #Eruption

Source > https://www.instagram.com/reel/CuhoUh_oomI/?igshid=MTc4MmM1YmI2Ng==

There’s a huge #radioactive slab of #volcanic #granite buried on the #moon
https://www.newscientist.com/article/2381498-theres-a-huge-radioactive-slab-of-volcanic-granite-buried-on-the-moon/

#ClimateChange will increase impacts of #volcanic eruptions

June 28, 2023, Portland State University

"Volcanic disasters have been studied since Pompeii was buried in 79 A.D., leading the public to believe that scientists already know why, where, when and how long volcanoes will erupt. But a volcanologist said these fundamental questions remain a mystery."

However, we do know that, "#SeaLevel rise, #GlacialMelting, #aquifer depletion, and #mountain #erosion can all affect the likelihood and frequency of volcanic eruptions."

#ClimateCrisis #ClimateCatastrophe #Volcanoes

https://www.sciencedaily.com/releases/2023/06/230628131038.htm

Post-Subduction Tectonics Induced By Extension From A Lithospheric Drip
--
https://doi.org/10.1038/s41561-023-01201-7 <-- shared paper
--
#GIS #spatial #mapping #formation #mechanical #data #geology #structuralgeology #platetectonics #subduction #tectonics #lithosphere #model #modeling #Borneo #magmatism #topography #uplift #Malysia #spatialanalysis #remotesensing #seismology #seismic #geophysics #gravity #gravational #volcanic #vulcanism #arc #simulation #simulations #crust #mantle #continent #orogeny

@frayedpassport
Loire Volcanique!
https://daily.sevenfifty.com/discover-loire-valley-volcanique/
#volcanic #wine #gamay #MassifCentral

Back when I went places and did things. #GoatWithTheFlow #goathiking #packgoats #BlackSandBeach #LuckyWeLiveHawaii #goats #beach #volcanic #hiking

Located just 4 miles west of #Carrizozo, Valley of Fires is one of the youngest lava flows in the continental United States, the second youngest in New Mexico behind the McCartys flow in the El Malpais National Monument.

#travel #roadtrip #NewMexico #geology #volcanic #landscape #offthebeatenpath

Australian Volcano Near Antarctica Captured On Satellite Spewing Lava
--
https://www.theguardian.com/australia-news/2023/may/30/big-ben-volcano-heard-island-near-antarctica-spewing-lava-captured-satellite-spewing-lava <-- shared media article
--
https://blog.csiro.au/volcanic-heard-island/ <-- blog post on the island’s influence on the local oceanic food chain via iron and phytoplankton
--
#GIS #spatial #mapping #remotesensing #volcanic #volcano #HeardIsland #BigBen #antarctic #eruption #remotesensing #ESA #gischat #satellite #copernicus #sentinel #earthobservation #oceanic #foodchain #phytoplankton #food #emissions #iron #research #australia
@ESA

Synthesis of #prebiotic organics from CO2 by catalysis with #meteoritic and #volcanic particles: https://www.nature.com/articles/s41598-023-33741-8 -> A role for meteoritic #iron in the emergence of #life on Earth: https://www.mpia.de/news/science/2023-07-iron-meteorite

#Meteoritic and #volcanic particles may have promoted #origin_of_life reactions.

#evolution #prebiotic #abiogenesis

https://phys.org/news/2023-05-meteoritic-volcanic-particles-life-reactions.html