Cool tour of Crystal Caves today.
December 24, 2025 at 9:38 PM
Cool tour of Crystal Caves today.
Two more "shield" speleothems in Grand Caverns. Each of these monsters is 2 meters in diameter. ⚒️
May 10, 2026 at 11:09 AM
Two more "shield" speleothems in Grand Caverns. Each of these monsters is 2 meters in diameter. ⚒️
"Late Miocene speleothems show significant warming, temperate vegetation, and wildfires in Arctic Siberia"; www.nature.com/articles/s41...
Late Miocene speleothems show significant warming, temperate vegetation, and wildfires in Arctic Siberia - Scientific Reports
Scientific Reports - Late Miocene speleothems show significant warming, temperate vegetation, and wildfires in Arctic Siberia
www.nature.com
February 2, 2026 at 5:12 PM
"Late Miocene speleothems show significant warming, temperate vegetation, and wildfires in Arctic Siberia"; www.nature.com/articles/s41...
Fieldwork day to Creswell Crags as part of our new project "Fire & Climate: Speleothems and the British Palaeolithic" funded by @britishacademy.bsky.social with Rob Hosfield & Sam Nicholson #soot #fire #aDNA
July 7, 2025 at 11:11 AM
Fieldwork day to Creswell Crags as part of our new project "Fire & Climate: Speleothems and the British Palaeolithic" funded by @britishacademy.bsky.social with Rob Hosfield & Sam Nicholson #soot #fire #aDNA
Have you heard of the salt mines in Poland? Entire rooms, with chandeliers!, are carved from salt. There are #statues, #halite #speleothems, #tunnels, and more!
#MinCup26
en.wikipedia.org/wiki/Wielicz...
#MinCup26
en.wikipedia.org/wiki/Wielicz...
September 13, 2026 at 2:26 PM
Have you heard of the salt mines in Poland? Entire rooms, with chandeliers!, are carved from salt. There are #statues, #halite #speleothems, #tunnels, and more!
#MinCup26
en.wikipedia.org/wiki/Wielicz...
#MinCup26
en.wikipedia.org/wiki/Wielicz...
No idea why that website posted. Anyways, this event is SUPER well documented across the world. Endless evidence from ocean cores, cave speleothems, radiocarbon samples... dozens of top peer reviewed pubs, aka its not fringe theory, it is accepted. So. Crazy ass corrupt king+ climate change...
November 14, 2024 at 4:16 PM
No idea why that website posted. Anyways, this event is SUPER well documented across the world. Endless evidence from ocean cores, cave speleothems, radiocarbon samples... dozens of top peer reviewed pubs, aka its not fringe theory, it is accepted. So. Crazy ass corrupt king+ climate change...
Chums, chums in the deep
November 30, 2024 at 2:31 AM
Chums, chums in the deep
JUST OUT: A new manuscript from our team shows temperate vegetation in modern Arctic Siberia at a time when the globe was 4.5 degrees warmer. www.nature.com/articles/s41...
@speleoseb.bsky.social @thomasopel.bsky.social
@speleoseb.bsky.social @thomasopel.bsky.social
Late Miocene speleothems show significant warming, temperate vegetation, and wildfires in Arctic Siberia
Scientific Reports - Late Miocene speleothems show significant warming, temperate vegetation, and wildfires in Arctic Siberia
www.nature.com
August 5, 2025 at 8:00 AM
JUST OUT: A new manuscript from our team shows temperate vegetation in modern Arctic Siberia at a time when the globe was 4.5 degrees warmer. www.nature.com/articles/s41...
@speleoseb.bsky.social @thomasopel.bsky.social
@speleoseb.bsky.social @thomasopel.bsky.social
For day 13 of #marchintolandscapes with a theme of #cavernous.
Inside Lehman Caves at the little alpine gem of #Nevada, Great Basin National Park.
#photography #cave
Inside Lehman Caves at the little alpine gem of #Nevada, Great Basin National Park.
#photography #cave
March 13, 2025 at 4:39 PM
For day 13 of #marchintolandscapes with a theme of #cavernous.
Inside Lehman Caves at the little alpine gem of #Nevada, Great Basin National Park.
#photography #cave
Inside Lehman Caves at the little alpine gem of #Nevada, Great Basin National Park.
#photography #cave
Analysis of speleothems across Asia suggest no coherent 4.2kya event agupubs.onlinelibrary.wiley.com/doi/full/10....
Regime Shifts in Holocene Paleohydrology as Recorded by Asian Speleothems
A pronounced isotopic enrichment trend is observed from 3.9 to 3.6 ka in a network of Asian speleothem records This trend is observed in records influenced by both the Indian Summer Monsoon and t...
agupubs.onlinelibrary.wiley.com
January 2, 2025 at 4:09 PM
Analysis of speleothems across Asia suggest no coherent 4.2kya event agupubs.onlinelibrary.wiley.com/doi/full/10....
Amazing such archives were preserved…
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems
www.nature.com/articles/s41...
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems
www.nature.com/articles/s41...
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems - Nature Geoscience
The Late Miocene terrestrial climate in eastern North Greenland displayed elevated temperatures at moderate atmospheric CO2 levels and was highly variable, reflecting the shifting orbital and ocean ci...
www.nature.com
October 21, 2025 at 7:15 PM
Amazing such archives were preserved…
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems
www.nature.com/articles/s41...
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems
www.nature.com/articles/s41...
Arctic speleothems reveal nearly permafrost-free Northern Hemisphere in the late Miocene"; www.nature.com/articles/s41...
Arctic speleothems reveal nearly permafrost-free Northern Hemisphere in the late Miocene - Nature Communications
Speleothem records from caves in Arctic Siberia allow for the reconstruction of multiannual air temperatures during the late Miocene (8.68±0.09 million years ago). These temperatures suggest that Eura...
www.nature.com
February 2, 2026 at 5:11 PM
Arctic speleothems reveal nearly permafrost-free Northern Hemisphere in the late Miocene"; www.nature.com/articles/s41...
🧪Attached to #speleothems? Maybe (just maybe) you are a #magnetic particle? 😉 check our latest study on magnetic particles in a flowstone from #Waipuna cave, #Aotearoa, and what they can tell us about past hydrological conditions 👇 kudos to a fantastic team! 🤩💪
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Multi-domain magnetic particles in speleothems as a proxy for past cave-stream flooding: A 33 kyr record from central North Island, Aotearoa New Zealand
Speleothems are a key archive for past terrestrial climate information due to their potential for long, continuous, high-resolution, precisely-dated p…
www.sciencedirect.com
March 14, 2025 at 2:27 PM
🧪Attached to #speleothems? Maybe (just maybe) you are a #magnetic particle? 😉 check our latest study on magnetic particles in a flowstone from #Waipuna cave, #Aotearoa, and what they can tell us about past hydrological conditions 👇 kudos to a fantastic team! 🤩💪
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Some #speleothems can have very dark colours, yet contain zero non-carbonate residue. They effectively grew in ancient "clean rooms", incorporating colloidal organics directly from dripwater (maybe from microbes). Pliocene, Nullarbor, Australia (photo:@isotopedude.bsky.social) 🧪
November 20, 2024 at 7:29 AM
Some #speleothems can have very dark colours, yet contain zero non-carbonate residue. They effectively grew in ancient "clean rooms", incorporating colloidal organics directly from dripwater (maybe from microbes). Pliocene, Nullarbor, Australia (photo:@isotopedude.bsky.social) 🧪
Just got back from a great tour in a Thuringian cave! 📸✨ We were capturing photogrammetric data to create 3D models of stunning sodastraw speleothems and testing equipment for a longterm photogrammetry study in a Swiss alpine cave.
June 6, 2025 at 9:01 PM
Just got back from a great tour in a Thuringian cave! 📸✨ We were capturing photogrammetric data to create 3D models of stunning sodastraw speleothems and testing equipment for a longterm photogrammetry study in a Swiss alpine cave.
Cavern Photographs by glorijean. Stalactites, Speleothems, Stalacpipe organ & river reflections. Link 24/7-
glorijean.pixels.com/art/caverns
#caverns #stalactites #speleothems #crystal_rivers #reflections #rock_formations #cavern #photography #glorijean.pixels.com #usa #Virginia #lurayVA
glorijean.pixels.com/art/caverns
#caverns #stalactites #speleothems #crystal_rivers #reflections #rock_formations #cavern #photography #glorijean.pixels.com #usa #Virginia #lurayVA
October 29, 2025 at 3:15 AM
Cavern Photographs by glorijean. Stalactites, Speleothems, Stalacpipe organ & river reflections. Link 24/7-
glorijean.pixels.com/art/caverns
#caverns #stalactites #speleothems #crystal_rivers #reflections #rock_formations #cavern #photography #glorijean.pixels.com #usa #Virginia #lurayVA
glorijean.pixels.com/art/caverns
#caverns #stalactites #speleothems #crystal_rivers #reflections #rock_formations #cavern #photography #glorijean.pixels.com #usa #Virginia #lurayVA
A painting of a pig in Leang Tedongnge, Sulawesi, Indonesia is encrusted with a few small speleothems that formed around 45,000 years ago, providing a minimum estimate of the age of this most ancient figurative art.
November 16, 2024 at 3:12 PM
A painting of a pig in Leang Tedongnge, Sulawesi, Indonesia is encrusted with a few small speleothems that formed around 45,000 years ago, providing a minimum estimate of the age of this most ancient figurative art.
July 18, 2025 at 1:47 AM
Not only do speleothems make caves enjoyable! Textbook hypogene morphology in Brzozowa #cave in the Polish Jura upland: cupolas, feeders, ghostrock.
September 28, 2025 at 2:05 PM
Not only do speleothems make caves enjoyable! Textbook hypogene morphology in Brzozowa #cave in the Polish Jura upland: cupolas, feeders, ghostrock.
there is no picture, and you've forced me to read "mammillary speleothems" which I can only conclude are boob rocks
August 17, 2026 at 1:40 AM
there is no picture, and you've forced me to read "mammillary speleothems" which I can only conclude are boob rocks
"Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems"; www.nature.com/articles/s41...
Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems - Nature Geoscience
The Late Miocene terrestrial climate in eastern North Greenland displayed elevated temperatures at moderate atmospheric CO2 levels and was highly variable, reflecting the shifting orbital and ocean ci...
www.nature.com
February 2, 2026 at 5:12 PM
"Late Miocene Arctic warmth and terrestrial climate recorded by North Greenland speleothems"; www.nature.com/articles/s41...
It’s that time of year again! #MinCup25! Vote for your favourite mineral as long as it is #calcite! In the form of #speleothems this mineral tells us so many stories about our #climate through the ages! 🤩 from precipitation to temperature to wildfire to past forests…
September 4, 2025 at 6:35 AM
It’s that time of year again! #MinCup25! Vote for your favourite mineral as long as it is #calcite! In the form of #speleothems this mineral tells us so many stories about our #climate through the ages! 🤩 from precipitation to temperature to wildfire to past forests…
anyways, merry christmas from a very happy phd student. may your holidays be filled with speleothems (er, gradierwerkthems?) in unexpected places
December 23, 2025 at 2:46 PM
anyways, merry christmas from a very happy phd student. may your holidays be filled with speleothems (er, gradierwerkthems?) in unexpected places
Our new paper just out in @nature.com
By analyzing speleothems we were able to reconstruct the palaeoclimate of northern Arabia over the past 8-million-years!
Work led by Monika Markowska (University of Northumbria)
www.nature.com/articles/s41...
By analyzing speleothems we were able to reconstruct the palaeoclimate of northern Arabia over the past 8-million-years!
Work led by Monika Markowska (University of Northumbria)
www.nature.com/articles/s41...
Recurrent humid phases in Arabia over the past 8 million years - Nature
A climatic record from desert speleothems shows that the central Arabian interior experienced recurrent humid intervals over the past 8 million years, which likely facilitated mammalian dispersals bet...
www.nature.com
April 9, 2025 at 10:40 PM
Our new paper just out in @nature.com
By analyzing speleothems we were able to reconstruct the palaeoclimate of northern Arabia over the past 8-million-years!
Work led by Monika Markowska (University of Northumbria)
www.nature.com/articles/s41...
By analyzing speleothems we were able to reconstruct the palaeoclimate of northern Arabia over the past 8-million-years!
Work led by Monika Markowska (University of Northumbria)
www.nature.com/articles/s41...